./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_rotate32.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_rotate32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX --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 d551f1abb3218eb8b1d4d4572d230d291d7b92b1901f2a1ff958c149ef6299de --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:48:14,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:48:14,276 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 18:48:14,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:48:14,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:48:14,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:48:14,319 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:48:14,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:48:14,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:48:14,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:48:14,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:48:14,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:48:14,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:48:14,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:48:14,324 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:48:14,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:48:14,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:48:14,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:48:14,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:48:14,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:48:14,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:48:14,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:48:14,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:48:14,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:48:14,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:48:14,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:48:14,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:48:14,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:48:14,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:48:14,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:48:14,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:48:14,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:48:14,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:48:14,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:48:14,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:48:14,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:48:14,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:48:14,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:48:14,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:48:14,338 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d551f1abb3218eb8b1d4d4572d230d291d7b92b1901f2a1ff958c149ef6299de [2024-11-08 18:48:14,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:48:14,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:48:14,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:48:14,683 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:48:14,684 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:48:14,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_rotate32.c Unable to find full path for "g++" [2024-11-08 18:48:16,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:48:16,815 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:48:16,816 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_rotate32.c [2024-11-08 18:48:16,825 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/data/265fba004/19336ea0d8994c58b58817e4bb96633a/FLAG31562c47a [2024-11-08 18:48:16,840 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/data/265fba004/19336ea0d8994c58b58817e4bb96633a [2024-11-08 18:48:16,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:48:16,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:48:16,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:48:16,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:48:16,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:48:16,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:48:16" (1/1) ... [2024-11-08 18:48:16,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b098db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:16, skipping insertion in model container [2024-11-08 18:48:16,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:48:16" (1/1) ... [2024-11-08 18:48:16,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:48:17,078 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_1307866e-0164-4e77-bfc2-a3a0625f7019/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_rotate32.c[1258,1271] [2024-11-08 18:48:17,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:48:17,163 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:48:17,174 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_1307866e-0164-4e77-bfc2-a3a0625f7019/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_rotate32.c[1258,1271] [2024-11-08 18:48:17,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:48:17,249 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:48:17,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17 WrapperNode [2024-11-08 18:48:17,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:48:17,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:48:17,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:48:17,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:48:17,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,346 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 320 [2024-11-08 18:48:17,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:48:17,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:48:17,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:48:17,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:48:17,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,406 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:48:17,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:48:17,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:48:17,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:48:17,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:48:17,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (1/1) ... [2024-11-08 18:48:17,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:48:17,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:48:17,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:48:17,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:48:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:48:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:48:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:48:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:48:17,665 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:48:17,668 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:48:18,390 INFO L? ?]: Removed 172 outVars from TransFormulas that were not future-live. [2024-11-08 18:48:18,390 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:48:18,403 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:48:18,403 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:48:18,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:48:18 BoogieIcfgContainer [2024-11-08 18:48:18,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:48:18,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:48:18,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:48:18,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:48:18,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:48:16" (1/3) ... [2024-11-08 18:48:18,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f20c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:48:18, skipping insertion in model container [2024-11-08 18:48:18,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:48:17" (2/3) ... [2024-11-08 18:48:18,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f20c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:48:18, skipping insertion in model container [2024-11-08 18:48:18,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:48:18" (3/3) ... [2024-11-08 18:48:18,413 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_rotate32.c [2024-11-08 18:48:18,432 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:48:18,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:48:18,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:48:18,502 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;@fa7e6c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:48:18,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:48:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 90 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 18:48:18,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:18,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:48:18,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:18,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:18,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1456516445, now seen corresponding path program 1 times [2024-11-08 18:48:18,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:18,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749565037] [2024-11-08 18:48:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:18,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:19,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:19,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749565037] [2024-11-08 18:48:19,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749565037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:19,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:19,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:48:19,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890462459] [2024-11-08 18:48:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:19,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:48:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:48:19,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:48:19,195 INFO L87 Difference]: Start difference. First operand has 91 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 90 states have internal predecessors, (133), 0 states have call successors, (0), 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 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:19,268 INFO L93 Difference]: Finished difference Result 170 states and 252 transitions. [2024-11-08 18:48:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:48:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-08 18:48:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:19,281 INFO L225 Difference]: With dead ends: 170 [2024-11-08 18:48:19,282 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 18:48:19,285 INFO L431 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 [2024-11-08 18:48:19,291 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 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 [2024-11-08 18:48:19,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 18:48:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-08 18:48:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 88 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 129 transitions. [2024-11-08 18:48:19,340 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 129 transitions. Word has length 13 [2024-11-08 18:48:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:19,340 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 129 transitions. [2024-11-08 18:48:19,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 129 transitions. [2024-11-08 18:48:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 18:48:19,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:19,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:48:19,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:48:19,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:19,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:19,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2094325670, now seen corresponding path program 1 times [2024-11-08 18:48:19,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:19,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890746882] [2024-11-08 18:48:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:19,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:19,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890746882] [2024-11-08 18:48:19,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890746882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:19,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:19,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:48:19,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448819484] [2024-11-08 18:48:19,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:19,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:48:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:48:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:48:19,565 INFO L87 Difference]: Start difference. First operand 89 states and 129 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:19,617 INFO L93 Difference]: Finished difference Result 170 states and 247 transitions. [2024-11-08 18:48:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:48:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-08 18:48:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:19,620 INFO L225 Difference]: With dead ends: 170 [2024-11-08 18:48:19,620 INFO L226 Difference]: Without dead ends: 91 [2024-11-08 18:48:19,622 INFO L431 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 [2024-11-08 18:48:19,623 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 365 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 [2024-11-08 18:48:19,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-08 18:48:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-08 18:48:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 90 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 131 transitions. [2024-11-08 18:48:19,637 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 131 transitions. Word has length 14 [2024-11-08 18:48:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:19,638 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 131 transitions. [2024-11-08 18:48:19,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 131 transitions. [2024-11-08 18:48:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 18:48:19,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:19,656 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:48:19,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:48:19,656 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:19,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash -598379556, now seen corresponding path program 1 times [2024-11-08 18:48:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699204282] [2024-11-08 18:48:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:19,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:19,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699204282] [2024-11-08 18:48:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699204282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:19,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:48:19,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739459340] [2024-11-08 18:48:19,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:19,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:48:19,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:48:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:48:19,977 INFO L87 Difference]: Start difference. First operand 91 states and 131 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:20,030 INFO L93 Difference]: Finished difference Result 174 states and 251 transitions. [2024-11-08 18:48:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:48:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 18:48:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:20,034 INFO L225 Difference]: With dead ends: 174 [2024-11-08 18:48:20,034 INFO L226 Difference]: Without dead ends: 93 [2024-11-08 18:48:20,035 INFO L431 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 [2024-11-08 18:48:20,036 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 8 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:20,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 476 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-08 18:48:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-08 18:48:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 92 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2024-11-08 18:48:20,050 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 15 [2024-11-08 18:48:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:20,050 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2024-11-08 18:48:20,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2024-11-08 18:48:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 18:48:20,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:20,054 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:48:20,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:48:20,054 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:20,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:20,056 INFO L85 PathProgramCache]: Analyzing trace with hash 889936688, now seen corresponding path program 1 times [2024-11-08 18:48:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:20,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591728073] [2024-11-08 18:48:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:20,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:20,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591728073] [2024-11-08 18:48:20,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591728073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:48:20,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100029450] [2024-11-08 18:48:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:20,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:48:20,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:48:20,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:48:20,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:48:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:21,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 18:48:21,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:48:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:21,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:48:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:22,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100029450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:48:22,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:48:22,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 10] total 21 [2024-11-08 18:48:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803286653] [2024-11-08 18:48:22,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:48:22,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:48:22,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:48:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:48:22,298 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:22,664 INFO L93 Difference]: Finished difference Result 177 states and 254 transitions. [2024-11-08 18:48:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:48:22,665 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 18:48:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:22,666 INFO L225 Difference]: With dead ends: 177 [2024-11-08 18:48:22,666 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 18:48:22,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:48:22,669 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 170 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:22,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 892 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:48:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 18:48:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-11-08 18:48:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 93 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 134 transitions. [2024-11-08 18:48:22,683 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 134 transitions. Word has length 54 [2024-11-08 18:48:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:22,684 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 134 transitions. [2024-11-08 18:48:22,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 134 transitions. [2024-11-08 18:48:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 18:48:22,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:22,686 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:22,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:48:22,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:48:22,891 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:22,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 991820983, now seen corresponding path program 1 times [2024-11-08 18:48:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:22,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487717609] [2024-11-08 18:48:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:22,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487717609] [2024-11-08 18:48:24,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487717609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:24,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:24,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-08 18:48:24,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703205997] [2024-11-08 18:48:24,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:24,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:48:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:48:24,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:48:24,561 INFO L87 Difference]: Start difference. First operand 94 states and 134 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:24,875 INFO L93 Difference]: Finished difference Result 318 states and 459 transitions. [2024-11-08 18:48:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:48:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 18:48:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:24,879 INFO L225 Difference]: With dead ends: 318 [2024-11-08 18:48:24,880 INFO L226 Difference]: Without dead ends: 234 [2024-11-08 18:48:24,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:48:24,885 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 203 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:24,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1450 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:48:24,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-08 18:48:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 151. [2024-11-08 18:48:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.4333333333333333) internal successors, (215), 150 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 215 transitions. [2024-11-08 18:48:24,905 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 215 transitions. Word has length 55 [2024-11-08 18:48:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:24,906 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 215 transitions. [2024-11-08 18:48:24,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 215 transitions. [2024-11-08 18:48:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:48:24,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:24,908 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:24,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:48:24,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:24,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1579973859, now seen corresponding path program 1 times [2024-11-08 18:48:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465509808] [2024-11-08 18:48:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:24,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:26,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465509808] [2024-11-08 18:48:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465509808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:26,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:26,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:48:26,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077646820] [2024-11-08 18:48:26,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:26,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:48:26,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:48:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:26,528 INFO L87 Difference]: Start difference. First operand 151 states and 215 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:26,931 INFO L93 Difference]: Finished difference Result 444 states and 643 transitions. [2024-11-08 18:48:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:48:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:48:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:26,933 INFO L225 Difference]: With dead ends: 444 [2024-11-08 18:48:26,934 INFO L226 Difference]: Without dead ends: 328 [2024-11-08 18:48:26,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:26,935 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 314 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:26,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1014 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:48:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-08 18:48:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 215. [2024-11-08 18:48:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4439252336448598) internal successors, (309), 214 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 309 transitions. [2024-11-08 18:48:26,944 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 309 transitions. Word has length 56 [2024-11-08 18:48:26,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:26,945 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 309 transitions. [2024-11-08 18:48:26,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 309 transitions. [2024-11-08 18:48:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:48:26,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:26,947 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:26,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:48:26,947 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:26,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1342995684, now seen corresponding path program 1 times [2024-11-08 18:48:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249461103] [2024-11-08 18:48:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:26,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:28,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249461103] [2024-11-08 18:48:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249461103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:28,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:28,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:48:28,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540981998] [2024-11-08 18:48:28,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:28,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:48:28,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:28,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:48:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:28,540 INFO L87 Difference]: Start difference. First operand 215 states and 309 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:28,988 INFO L93 Difference]: Finished difference Result 556 states and 807 transitions. [2024-11-08 18:48:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:48:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:48:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:28,990 INFO L225 Difference]: With dead ends: 556 [2024-11-08 18:48:28,990 INFO L226 Difference]: Without dead ends: 417 [2024-11-08 18:48:28,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:28,991 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 306 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:28,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1165 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:48:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-08 18:48:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 246. [2024-11-08 18:48:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.4448979591836735) internal successors, (354), 245 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 354 transitions. [2024-11-08 18:48:29,011 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 354 transitions. Word has length 56 [2024-11-08 18:48:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:29,012 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 354 transitions. [2024-11-08 18:48:29,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 354 transitions. [2024-11-08 18:48:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:48:29,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:29,017 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:29,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:48:29,017 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:29,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -436805838, now seen corresponding path program 1 times [2024-11-08 18:48:29,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:29,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291554184] [2024-11-08 18:48:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:29,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291554184] [2024-11-08 18:48:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291554184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:29,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:29,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-08 18:48:29,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378478335] [2024-11-08 18:48:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:29,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:48:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:29,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:48:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:48:29,849 INFO L87 Difference]: Start difference. First operand 246 states and 354 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:30,218 INFO L93 Difference]: Finished difference Result 543 states and 791 transitions. [2024-11-08 18:48:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:48:30,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:48:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:30,220 INFO L225 Difference]: With dead ends: 543 [2024-11-08 18:48:30,220 INFO L226 Difference]: Without dead ends: 459 [2024-11-08 18:48:30,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:48:30,221 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 218 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:30,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1552 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:48:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-08 18:48:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 290. [2024-11-08 18:48:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.453287197231834) internal successors, (420), 289 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 420 transitions. [2024-11-08 18:48:30,238 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 420 transitions. Word has length 56 [2024-11-08 18:48:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:30,239 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 420 transitions. [2024-11-08 18:48:30,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 420 transitions. [2024-11-08 18:48:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:48:30,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:30,246 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:30,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:48:30,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:30,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:30,246 INFO L85 PathProgramCache]: Analyzing trace with hash 415836089, now seen corresponding path program 1 times [2024-11-08 18:48:30,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:30,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386656676] [2024-11-08 18:48:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:30,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:31,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:31,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386656676] [2024-11-08 18:48:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386656676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-08 18:48:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903012488] [2024-11-08 18:48:31,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:31,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:48:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:31,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:48:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:48:31,953 INFO L87 Difference]: Start difference. First operand 290 states and 420 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:32,480 INFO L93 Difference]: Finished difference Result 629 states and 916 transitions. [2024-11-08 18:48:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 18:48:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:48:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:32,482 INFO L225 Difference]: With dead ends: 629 [2024-11-08 18:48:32,482 INFO L226 Difference]: Without dead ends: 491 [2024-11-08 18:48:32,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:32,486 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 161 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:32,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1601 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:48:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-08 18:48:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 349. [2024-11-08 18:48:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4597701149425288) internal successors, (508), 348 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 508 transitions. [2024-11-08 18:48:32,495 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 508 transitions. Word has length 56 [2024-11-08 18:48:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:32,495 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 508 transitions. [2024-11-08 18:48:32,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 508 transitions. [2024-11-08 18:48:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:32,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:32,497 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:32,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:48:32,497 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:32,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 638118573, now seen corresponding path program 1 times [2024-11-08 18:48:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693219744] [2024-11-08 18:48:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:33,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:33,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693219744] [2024-11-08 18:48:33,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693219744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:33,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:33,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-08 18:48:33,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573416185] [2024-11-08 18:48:33,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:33,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 18:48:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 18:48:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:48:33,962 INFO L87 Difference]: Start difference. First operand 349 states and 508 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:34,321 INFO L93 Difference]: Finished difference Result 772 states and 1130 transitions. [2024-11-08 18:48:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 18:48:34,322 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:34,324 INFO L225 Difference]: With dead ends: 772 [2024-11-08 18:48:34,325 INFO L226 Difference]: Without dead ends: 592 [2024-11-08 18:48:34,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:48:34,326 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 149 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:34,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1403 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:48:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-08 18:48:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 438. [2024-11-08 18:48:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.4622425629290619) internal successors, (639), 437 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 639 transitions. [2024-11-08 18:48:34,343 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 639 transitions. Word has length 57 [2024-11-08 18:48:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:34,343 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 639 transitions. [2024-11-08 18:48:34,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 639 transitions. [2024-11-08 18:48:34,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:34,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:34,345 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:34,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:48:34,346 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:34,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1391389527, now seen corresponding path program 1 times [2024-11-08 18:48:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:34,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675903169] [2024-11-08 18:48:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675903169] [2024-11-08 18:48:34,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675903169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:34,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:34,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:48:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104624606] [2024-11-08 18:48:34,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:34,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:48:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:34,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:48:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:48:34,589 INFO L87 Difference]: Start difference. First operand 438 states and 639 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:34,640 INFO L93 Difference]: Finished difference Result 714 states and 1042 transitions. [2024-11-08 18:48:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:48:34,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:34,643 INFO L225 Difference]: With dead ends: 714 [2024-11-08 18:48:34,643 INFO L226 Difference]: Without dead ends: 460 [2024-11-08 18:48:34,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:48:34,644 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 39 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:34,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 591 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-08 18:48:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2024-11-08 18:48:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.4442013129102844) internal successors, (660), 457 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 660 transitions. [2024-11-08 18:48:34,654 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 660 transitions. Word has length 57 [2024-11-08 18:48:34,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:34,655 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 660 transitions. [2024-11-08 18:48:34,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 660 transitions. [2024-11-08 18:48:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:34,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:34,657 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:34,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:48:34,657 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:34,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1813771792, now seen corresponding path program 1 times [2024-11-08 18:48:34,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:34,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474125107] [2024-11-08 18:48:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:34,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:35,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:35,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474125107] [2024-11-08 18:48:35,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474125107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:35,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:35,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:48:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377315518] [2024-11-08 18:48:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:35,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:48:35,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:48:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:48:35,004 INFO L87 Difference]: Start difference. First operand 458 states and 660 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:35,052 INFO L93 Difference]: Finished difference Result 676 states and 973 transitions. [2024-11-08 18:48:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:48:35,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:35,055 INFO L225 Difference]: With dead ends: 676 [2024-11-08 18:48:35,056 INFO L226 Difference]: Without dead ends: 410 [2024-11-08 18:48:35,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:48:35,057 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 31 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:35,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 464 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-08 18:48:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 408. [2024-11-08 18:48:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.4226044226044225) internal successors, (579), 407 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 579 transitions. [2024-11-08 18:48:35,067 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 579 transitions. Word has length 57 [2024-11-08 18:48:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:35,067 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 579 transitions. [2024-11-08 18:48:35,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 579 transitions. [2024-11-08 18:48:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:35,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:35,069 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:35,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:48:35,070 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:35,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2006130473, now seen corresponding path program 1 times [2024-11-08 18:48:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222890984] [2024-11-08 18:48:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:36,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222890984] [2024-11-08 18:48:36,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222890984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:36,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:36,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:48:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33709312] [2024-11-08 18:48:36,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:36,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:48:36,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:36,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:48:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:36,240 INFO L87 Difference]: Start difference. First operand 408 states and 579 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:36,505 INFO L93 Difference]: Finished difference Result 739 states and 1046 transitions. [2024-11-08 18:48:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:48:36,506 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:36,508 INFO L225 Difference]: With dead ends: 739 [2024-11-08 18:48:36,508 INFO L226 Difference]: Without dead ends: 589 [2024-11-08 18:48:36,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:36,509 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 152 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:36,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1278 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:48:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-08 18:48:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 419. [2024-11-08 18:48:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.423444976076555) internal successors, (595), 418 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) [2024-11-08 18:48:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 595 transitions. [2024-11-08 18:48:36,520 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 595 transitions. Word has length 57 [2024-11-08 18:48:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:36,520 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 595 transitions. [2024-11-08 18:48:36,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 595 transitions. [2024-11-08 18:48:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:36,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:36,524 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:36,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:48:36,525 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:36,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash 716507280, now seen corresponding path program 1 times [2024-11-08 18:48:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982008958] [2024-11-08 18:48:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982008958] [2024-11-08 18:48:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982008958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:37,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:37,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-08 18:48:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37469913] [2024-11-08 18:48:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:37,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:48:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:48:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:48:37,833 INFO L87 Difference]: Start difference. First operand 419 states and 595 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:38,258 INFO L93 Difference]: Finished difference Result 789 states and 1128 transitions. [2024-11-08 18:48:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 18:48:38,259 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:38,262 INFO L225 Difference]: With dead ends: 789 [2024-11-08 18:48:38,262 INFO L226 Difference]: Without dead ends: 593 [2024-11-08 18:48:38,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:48:38,263 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 117 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:38,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1643 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:48:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-08 18:48:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 462. [2024-11-08 18:48:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.4186550976138828) internal successors, (654), 461 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 654 transitions. [2024-11-08 18:48:38,276 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 654 transitions. Word has length 57 [2024-11-08 18:48:38,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:38,277 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 654 transitions. [2024-11-08 18:48:38,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 654 transitions. [2024-11-08 18:48:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:38,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:38,278 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:38,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:48:38,279 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:38,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1418524684, now seen corresponding path program 1 times [2024-11-08 18:48:38,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967323856] [2024-11-08 18:48:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:38,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:38,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967323856] [2024-11-08 18:48:38,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967323856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:38,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:38,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:48:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559220064] [2024-11-08 18:48:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:38,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:48:38,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:48:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:48:38,733 INFO L87 Difference]: Start difference. First operand 462 states and 654 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:38,794 INFO L93 Difference]: Finished difference Result 735 states and 1042 transitions. [2024-11-08 18:48:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:48:38,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:38,796 INFO L225 Difference]: With dead ends: 735 [2024-11-08 18:48:38,796 INFO L226 Difference]: Without dead ends: 504 [2024-11-08 18:48:38,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:48:38,799 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 35 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:38,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 820 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-08 18:48:38,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-08 18:48:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.3883299798792756) internal successors, (690), 497 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 690 transitions. [2024-11-08 18:48:38,808 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 690 transitions. Word has length 57 [2024-11-08 18:48:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:38,809 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 690 transitions. [2024-11-08 18:48:38,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 690 transitions. [2024-11-08 18:48:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:38,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:38,810 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:38,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:48:38,811 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:38,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:38,811 INFO L85 PathProgramCache]: Analyzing trace with hash 573159611, now seen corresponding path program 1 times [2024-11-08 18:48:38,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129407439] [2024-11-08 18:48:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129407439] [2024-11-08 18:48:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129407439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:39,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:39,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:48:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738862079] [2024-11-08 18:48:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:39,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:48:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:48:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:48:39,236 INFO L87 Difference]: Start difference. First operand 498 states and 690 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:39,306 INFO L93 Difference]: Finished difference Result 732 states and 1023 transitions. [2024-11-08 18:48:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:48:39,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:39,308 INFO L225 Difference]: With dead ends: 732 [2024-11-08 18:48:39,309 INFO L226 Difference]: Without dead ends: 500 [2024-11-08 18:48:39,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:48:39,309 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 32 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:39,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 686 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:48:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-08 18:48:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 498. [2024-11-08 18:48:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.3742454728370221) internal successors, (683), 497 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 683 transitions. [2024-11-08 18:48:39,319 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 683 transitions. Word has length 57 [2024-11-08 18:48:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:39,319 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 683 transitions. [2024-11-08 18:48:39,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 683 transitions. [2024-11-08 18:48:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:39,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:39,321 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:39,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:48:39,321 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:39,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash 848790015, now seen corresponding path program 1 times [2024-11-08 18:48:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:39,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803925644] [2024-11-08 18:48:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:39,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:39,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803925644] [2024-11-08 18:48:39,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803925644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:39,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:39,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 18:48:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271787223] [2024-11-08 18:48:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:39,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:48:39,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:48:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:48:39,875 INFO L87 Difference]: Start difference. First operand 498 states and 683 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:39,957 INFO L93 Difference]: Finished difference Result 717 states and 995 transitions. [2024-11-08 18:48:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:48:39,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:39,959 INFO L225 Difference]: With dead ends: 717 [2024-11-08 18:48:39,959 INFO L226 Difference]: Without dead ends: 536 [2024-11-08 18:48:39,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:48:39,960 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 48 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:39,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 847 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:48:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-08 18:48:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 521. [2024-11-08 18:48:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 1.3634615384615385) internal successors, (709), 520 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 709 transitions. [2024-11-08 18:48:39,971 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 709 transitions. Word has length 57 [2024-11-08 18:48:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:39,971 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 709 transitions. [2024-11-08 18:48:39,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 709 transitions. [2024-11-08 18:48:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:39,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:39,973 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:39,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:48:39,974 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:39,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash 995864134, now seen corresponding path program 1 times [2024-11-08 18:48:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320444693] [2024-11-08 18:48:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:41,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320444693] [2024-11-08 18:48:41,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320444693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:41,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:41,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-08 18:48:41,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618556512] [2024-11-08 18:48:41,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:41,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:48:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:48:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:48:41,796 INFO L87 Difference]: Start difference. First operand 521 states and 709 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:42,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:42,550 INFO L93 Difference]: Finished difference Result 782 states and 1081 transitions. [2024-11-08 18:48:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:48:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:42,554 INFO L225 Difference]: With dead ends: 782 [2024-11-08 18:48:42,554 INFO L226 Difference]: Without dead ends: 632 [2024-11-08 18:48:42,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:48:42,558 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 124 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:42,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1586 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:48:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-08 18:48:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 538. [2024-11-08 18:48:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.3687150837988826) internal successors, (735), 537 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 735 transitions. [2024-11-08 18:48:42,577 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 735 transitions. Word has length 57 [2024-11-08 18:48:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:42,578 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 735 transitions. [2024-11-08 18:48:42,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 735 transitions. [2024-11-08 18:48:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:42,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:42,580 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:42,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:48:42,581 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:42,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -81095990, now seen corresponding path program 1 times [2024-11-08 18:48:42,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:42,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556190981] [2024-11-08 18:48:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556190981] [2024-11-08 18:48:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556190981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:43,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:43,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-08 18:48:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440518483] [2024-11-08 18:48:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:43,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:48:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:48:43,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:48:43,526 INFO L87 Difference]: Start difference. First operand 538 states and 735 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:44,065 INFO L93 Difference]: Finished difference Result 884 states and 1228 transitions. [2024-11-08 18:48:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:48:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:44,068 INFO L225 Difference]: With dead ends: 884 [2024-11-08 18:48:44,068 INFO L226 Difference]: Without dead ends: 746 [2024-11-08 18:48:44,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:48:44,069 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 379 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:44,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1417 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:48:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-08 18:48:44,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 561. [2024-11-08 18:48:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 1.3660714285714286) internal successors, (765), 560 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 765 transitions. [2024-11-08 18:48:44,082 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 765 transitions. Word has length 57 [2024-11-08 18:48:44,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:44,082 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 765 transitions. [2024-11-08 18:48:44,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 765 transitions. [2024-11-08 18:48:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:44,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:44,084 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:44,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:48:44,084 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:44,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1291453807, now seen corresponding path program 1 times [2024-11-08 18:48:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21243502] [2024-11-08 18:48:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:45,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:45,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21243502] [2024-11-08 18:48:45,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21243502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:45,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:45,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-08 18:48:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370204239] [2024-11-08 18:48:45,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:45,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:48:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:48:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:48:45,716 INFO L87 Difference]: Start difference. First operand 561 states and 765 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:46,282 INFO L93 Difference]: Finished difference Result 874 states and 1196 transitions. [2024-11-08 18:48:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:48:46,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:46,285 INFO L225 Difference]: With dead ends: 874 [2024-11-08 18:48:46,285 INFO L226 Difference]: Without dead ends: 720 [2024-11-08 18:48:46,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:48:46,287 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 134 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:46,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1391 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:48:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-08 18:48:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 593. [2024-11-08 18:48:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.364864864864865) internal successors, (808), 592 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 808 transitions. [2024-11-08 18:48:46,305 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 808 transitions. Word has length 57 [2024-11-08 18:48:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:46,305 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 808 transitions. [2024-11-08 18:48:46,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 808 transitions. [2024-11-08 18:48:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:46,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:46,307 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:46,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 18:48:46,308 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:46,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2039330907, now seen corresponding path program 1 times [2024-11-08 18:48:46,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576918193] [2024-11-08 18:48:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:47,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576918193] [2024-11-08 18:48:47,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576918193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:47,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:47,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:48:47,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080003955] [2024-11-08 18:48:47,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:47,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:48:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:47,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:48:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:47,729 INFO L87 Difference]: Start difference. First operand 593 states and 808 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:48,061 INFO L93 Difference]: Finished difference Result 895 states and 1230 transitions. [2024-11-08 18:48:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:48:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:48,064 INFO L225 Difference]: With dead ends: 895 [2024-11-08 18:48:48,064 INFO L226 Difference]: Without dead ends: 741 [2024-11-08 18:48:48,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:48:48,066 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 163 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:48,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 977 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:48:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-08 18:48:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 615. [2024-11-08 18:48:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.3664495114006514) internal successors, (839), 614 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 839 transitions. [2024-11-08 18:48:48,080 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 839 transitions. Word has length 57 [2024-11-08 18:48:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:48,081 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 839 transitions. [2024-11-08 18:48:48,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 839 transitions. [2024-11-08 18:48:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:48,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:48,082 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:48,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 18:48:48,083 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:48,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:48,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1916282479, now seen corresponding path program 1 times [2024-11-08 18:48:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:48,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377919030] [2024-11-08 18:48:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:49,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:49,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377919030] [2024-11-08 18:48:49,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377919030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:49,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:49,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:48:49,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75856842] [2024-11-08 18:48:49,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:49,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:48:49,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:49,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:48:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:49,205 INFO L87 Difference]: Start difference. First operand 615 states and 839 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:49,418 INFO L93 Difference]: Finished difference Result 893 states and 1230 transitions. [2024-11-08 18:48:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:48:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:49,421 INFO L225 Difference]: With dead ends: 893 [2024-11-08 18:48:49,421 INFO L226 Difference]: Without dead ends: 739 [2024-11-08 18:48:49,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:49,422 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 129 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:49,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1143 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:48:49,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-08 18:48:49,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 662. [2024-11-08 18:48:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.3706505295007565) internal successors, (906), 661 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 906 transitions. [2024-11-08 18:48:49,435 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 906 transitions. Word has length 57 [2024-11-08 18:48:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:49,436 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 906 transitions. [2024-11-08 18:48:49,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:49,436 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 906 transitions. [2024-11-08 18:48:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:48:49,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:49,437 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:49,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 18:48:49,438 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:49,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:49,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1249135189, now seen corresponding path program 1 times [2024-11-08 18:48:49,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:49,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615624886] [2024-11-08 18:48:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:49,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:49,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:49,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615624886] [2024-11-08 18:48:49,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615624886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:49,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:49,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:48:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139060940] [2024-11-08 18:48:49,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:49,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:48:49,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:48:49,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:48:49,944 INFO L87 Difference]: Start difference. First operand 662 states and 906 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:50,309 INFO L93 Difference]: Finished difference Result 1001 states and 1387 transitions. [2024-11-08 18:48:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:48:50,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:48:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:50,312 INFO L225 Difference]: With dead ends: 1001 [2024-11-08 18:48:50,312 INFO L226 Difference]: Without dead ends: 847 [2024-11-08 18:48:50,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:48:50,313 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 349 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:50,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 636 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:48:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-08 18:48:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 797. [2024-11-08 18:48:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.3731155778894473) internal successors, (1093), 796 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1093 transitions. [2024-11-08 18:48:50,330 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1093 transitions. Word has length 57 [2024-11-08 18:48:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:50,330 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1093 transitions. [2024-11-08 18:48:50,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1093 transitions. [2024-11-08 18:48:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:50,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:50,332 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:50,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 18:48:50,333 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:50,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash 400188861, now seen corresponding path program 1 times [2024-11-08 18:48:50,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:50,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925126059] [2024-11-08 18:48:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:51,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:51,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925126059] [2024-11-08 18:48:51,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925126059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:51,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:51,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:48:51,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053196476] [2024-11-08 18:48:51,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:51,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:48:51,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:48:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:51,351 INFO L87 Difference]: Start difference. First operand 797 states and 1093 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:51,605 INFO L93 Difference]: Finished difference Result 1083 states and 1503 transitions. [2024-11-08 18:48:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:48:51,606 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:51,609 INFO L225 Difference]: With dead ends: 1083 [2024-11-08 18:48:51,609 INFO L226 Difference]: Without dead ends: 874 [2024-11-08 18:48:51,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:48:51,610 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 231 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:51,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1012 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:48:51,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-08 18:48:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 778. [2024-11-08 18:48:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.3706563706563706) internal successors, (1065), 777 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1065 transitions. [2024-11-08 18:48:51,626 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1065 transitions. Word has length 58 [2024-11-08 18:48:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:51,626 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 1065 transitions. [2024-11-08 18:48:51,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1065 transitions. [2024-11-08 18:48:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:51,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:51,628 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:51,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 18:48:51,629 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:51,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash 883789562, now seen corresponding path program 1 times [2024-11-08 18:48:51,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:51,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542939241] [2024-11-08 18:48:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:52,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542939241] [2024-11-08 18:48:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542939241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:52,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:52,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-08 18:48:52,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922288923] [2024-11-08 18:48:52,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:52,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:48:52,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:48:52,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:48:52,135 INFO L87 Difference]: Start difference. First operand 778 states and 1065 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:52,263 INFO L93 Difference]: Finished difference Result 1228 states and 1709 transitions. [2024-11-08 18:48:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:48:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:52,265 INFO L225 Difference]: With dead ends: 1228 [2024-11-08 18:48:52,265 INFO L226 Difference]: Without dead ends: 950 [2024-11-08 18:48:52,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:48:52,266 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 42 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:52,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1336 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:48:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-11-08 18:48:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 801. [2024-11-08 18:48:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 1.36875) internal successors, (1095), 800 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1095 transitions. [2024-11-08 18:48:52,284 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1095 transitions. Word has length 58 [2024-11-08 18:48:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:52,284 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1095 transitions. [2024-11-08 18:48:52,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1095 transitions. [2024-11-08 18:48:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:52,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:52,286 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:52,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 18:48:52,286 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:52,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1030863681, now seen corresponding path program 1 times [2024-11-08 18:48:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920019725] [2024-11-08 18:48:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920019725] [2024-11-08 18:48:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920019725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:53,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:53,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-08 18:48:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682168620] [2024-11-08 18:48:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:53,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:48:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:48:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:48:53,457 INFO L87 Difference]: Start difference. First operand 801 states and 1095 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:53,984 INFO L93 Difference]: Finished difference Result 1394 states and 1940 transitions. [2024-11-08 18:48:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:48:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:53,989 INFO L225 Difference]: With dead ends: 1394 [2024-11-08 18:48:53,989 INFO L226 Difference]: Without dead ends: 1185 [2024-11-08 18:48:53,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:48:53,991 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 548 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:53,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1946 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:48:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2024-11-08 18:48:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 848. [2024-11-08 18:48:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 1.371900826446281) internal successors, (1162), 847 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1162 transitions. [2024-11-08 18:48:54,013 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1162 transitions. Word has length 58 [2024-11-08 18:48:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:54,013 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 1162 transitions. [2024-11-08 18:48:54,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1162 transitions. [2024-11-08 18:48:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:54,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:54,015 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:54,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 18:48:54,016 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:54,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 635171272, now seen corresponding path program 1 times [2024-11-08 18:48:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:54,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208708347] [2024-11-08 18:48:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:54,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208708347] [2024-11-08 18:48:54,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208708347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:54,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:54,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:48:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547711928] [2024-11-08 18:48:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:54,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:48:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:48:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:48:54,382 INFO L87 Difference]: Start difference. First operand 848 states and 1162 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:54,425 INFO L93 Difference]: Finished difference Result 1164 states and 1628 transitions. [2024-11-08 18:48:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:48:54,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:54,428 INFO L225 Difference]: With dead ends: 1164 [2024-11-08 18:48:54,428 INFO L226 Difference]: Without dead ends: 846 [2024-11-08 18:48:54,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:48:54,430 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 30 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:54,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 691 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-08 18:48:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 821. [2024-11-08 18:48:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 1.3658536585365855) internal successors, (1120), 820 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1120 transitions. [2024-11-08 18:48:54,447 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1120 transitions. Word has length 58 [2024-11-08 18:48:54,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:54,447 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1120 transitions. [2024-11-08 18:48:54,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1120 transitions. [2024-11-08 18:48:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:54,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:54,449 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:54,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-08 18:48:54,450 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:54,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1668111729, now seen corresponding path program 1 times [2024-11-08 18:48:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:54,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888649741] [2024-11-08 18:48:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:54,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:54,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888649741] [2024-11-08 18:48:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888649741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:54,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:54,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:48:54,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136751074] [2024-11-08 18:48:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:54,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:48:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:48:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:48:54,783 INFO L87 Difference]: Start difference. First operand 821 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:54,833 INFO L93 Difference]: Finished difference Result 1139 states and 1582 transitions. [2024-11-08 18:48:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:48:54,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:54,836 INFO L225 Difference]: With dead ends: 1139 [2024-11-08 18:48:54,837 INFO L226 Difference]: Without dead ends: 821 [2024-11-08 18:48:54,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:48:54,838 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 27 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:54,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 565 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-08 18:48:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 788. [2024-11-08 18:48:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3659466327827192) internal successors, (1075), 787 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1075 transitions. [2024-11-08 18:48:54,854 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1075 transitions. Word has length 58 [2024-11-08 18:48:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:54,855 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1075 transitions. [2024-11-08 18:48:54,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1075 transitions. [2024-11-08 18:48:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:54,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:54,858 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:54,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-08 18:48:54,858 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:54,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1713835489, now seen corresponding path program 1 times [2024-11-08 18:48:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:54,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062864416] [2024-11-08 18:48:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:55,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:55,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062864416] [2024-11-08 18:48:55,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062864416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:55,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:48:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620182108] [2024-11-08 18:48:55,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:55,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:48:55,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:48:55,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:48:55,173 INFO L87 Difference]: Start difference. First operand 788 states and 1075 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:55,207 INFO L93 Difference]: Finished difference Result 1226 states and 1687 transitions. [2024-11-08 18:48:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:48:55,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:55,211 INFO L225 Difference]: With dead ends: 1226 [2024-11-08 18:48:55,211 INFO L226 Difference]: Without dead ends: 798 [2024-11-08 18:48:55,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:48:55,212 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 31 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:55,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 541 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:48:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-08 18:48:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 776. [2024-11-08 18:48:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 1.3548387096774193) internal successors, (1050), 775 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1050 transitions. [2024-11-08 18:48:55,228 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1050 transitions. Word has length 58 [2024-11-08 18:48:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:55,228 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 1050 transitions. [2024-11-08 18:48:55,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1050 transitions. [2024-11-08 18:48:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:55,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:55,230 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:55,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-08 18:48:55,230 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:55,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1115282268, now seen corresponding path program 1 times [2024-11-08 18:48:55,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:55,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323003907] [2024-11-08 18:48:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:55,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:55,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323003907] [2024-11-08 18:48:55,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323003907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:55,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:55,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 18:48:55,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117664319] [2024-11-08 18:48:55,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:55,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:48:55,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:55,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:48:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:48:55,730 INFO L87 Difference]: Start difference. First operand 776 states and 1050 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:55,837 INFO L93 Difference]: Finished difference Result 1167 states and 1601 transitions. [2024-11-08 18:48:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:48:55,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:55,840 INFO L225 Difference]: With dead ends: 1167 [2024-11-08 18:48:55,840 INFO L226 Difference]: Without dead ends: 839 [2024-11-08 18:48:55,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:48:55,841 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 50 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:55,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 917 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:48:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-11-08 18:48:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 821. [2024-11-08 18:48:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 1.3378048780487806) internal successors, (1097), 820 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1097 transitions. [2024-11-08 18:48:55,856 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1097 transitions. Word has length 58 [2024-11-08 18:48:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:55,856 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1097 transitions. [2024-11-08 18:48:55,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1097 transitions. [2024-11-08 18:48:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:55,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:55,858 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:55,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-08 18:48:55,859 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:55,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 899971304, now seen corresponding path program 1 times [2024-11-08 18:48:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865680075] [2024-11-08 18:48:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865680075] [2024-11-08 18:48:56,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865680075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:56,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:56,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 18:48:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804385512] [2024-11-08 18:48:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:56,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:48:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:48:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:48:56,328 INFO L87 Difference]: Start difference. First operand 821 states and 1097 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:56,412 INFO L93 Difference]: Finished difference Result 1160 states and 1583 transitions. [2024-11-08 18:48:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:48:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:56,416 INFO L225 Difference]: With dead ends: 1160 [2024-11-08 18:48:56,416 INFO L226 Difference]: Without dead ends: 822 [2024-11-08 18:48:56,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:48:56,417 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 41 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:56,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 920 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:48:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2024-11-08 18:48:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 808. [2024-11-08 18:48:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.3308550185873607) internal successors, (1074), 807 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1074 transitions. [2024-11-08 18:48:56,432 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1074 transitions. Word has length 58 [2024-11-08 18:48:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:56,432 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1074 transitions. [2024-11-08 18:48:56,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1074 transitions. [2024-11-08 18:48:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:56,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:56,434 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:56,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-08 18:48:56,435 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:56,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -396314463, now seen corresponding path program 1 times [2024-11-08 18:48:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:56,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558223195] [2024-11-08 18:48:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:56,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:56,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:56,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558223195] [2024-11-08 18:48:56,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558223195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:48:56,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141257035] [2024-11-08 18:48:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:56,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:48:56,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:48:56,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:48:56,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:48:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:57,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-08 18:48:57,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:48:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:58,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:48:58,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141257035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:58,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:48:58,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2024-11-08 18:48:58,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739371171] [2024-11-08 18:48:58,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:58,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:48:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:48:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:48:58,140 INFO L87 Difference]: Start difference. First operand 808 states and 1074 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:59,257 INFO L93 Difference]: Finished difference Result 1514 states and 2045 transitions. [2024-11-08 18:48:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:48:59,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:59,261 INFO L225 Difference]: With dead ends: 1514 [2024-11-08 18:48:59,262 INFO L226 Difference]: Without dead ends: 1267 [2024-11-08 18:48:59,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:48:59,263 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 170 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:59,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1433 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:48:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2024-11-08 18:48:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1104. [2024-11-08 18:48:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1103 states have (on average 1.3363553943789666) internal successors, (1474), 1103 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1474 transitions. [2024-11-08 18:48:59,286 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1474 transitions. Word has length 58 [2024-11-08 18:48:59,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:59,287 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1474 transitions. [2024-11-08 18:48:59,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1474 transitions. [2024-11-08 18:48:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:59,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:59,289 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:59,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:48:59,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 18:48:59,491 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:59,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash -890764351, now seen corresponding path program 1 times [2024-11-08 18:48:59,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:59,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781365195] [2024-11-08 18:48:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:59,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:48:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:48:59,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:48:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781365195] [2024-11-08 18:48:59,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781365195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:48:59,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:48:59,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:48:59,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307259190] [2024-11-08 18:48:59,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:48:59,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:48:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:48:59,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:48:59,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:48:59,728 INFO L87 Difference]: Start difference. First operand 1104 states and 1474 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:48:59,900 INFO L93 Difference]: Finished difference Result 1734 states and 2345 transitions. [2024-11-08 18:48:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:48:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:48:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:48:59,902 INFO L225 Difference]: With dead ends: 1734 [2024-11-08 18:48:59,902 INFO L226 Difference]: Without dead ends: 1153 [2024-11-08 18:48:59,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:48:59,903 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 120 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:48:59,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 365 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:48:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-08 18:48:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1133. [2024-11-08 18:48:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1132 states have (on average 1.3339222614840989) internal successors, (1510), 1132 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1510 transitions. [2024-11-08 18:48:59,922 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1510 transitions. Word has length 58 [2024-11-08 18:48:59,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:48:59,923 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1510 transitions. [2024-11-08 18:48:59,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:48:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1510 transitions. [2024-11-08 18:48:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:48:59,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:48:59,925 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:48:59,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-08 18:48:59,926 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:48:59,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:48:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash -113949816, now seen corresponding path program 1 times [2024-11-08 18:48:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:48:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118283232] [2024-11-08 18:48:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:48:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:48:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:01,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:01,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118283232] [2024-11-08 18:49:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118283232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:01,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:49:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665845748] [2024-11-08 18:49:01,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:01,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:49:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:49:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:49:01,231 INFO L87 Difference]: Start difference. First operand 1133 states and 1510 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:01,679 INFO L93 Difference]: Finished difference Result 1668 states and 2265 transitions. [2024-11-08 18:49:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:49:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:49:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:01,682 INFO L225 Difference]: With dead ends: 1668 [2024-11-08 18:49:01,682 INFO L226 Difference]: Without dead ends: 1266 [2024-11-08 18:49:01,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:49:01,683 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 98 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:01,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1778 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:49:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-08 18:49:01,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1165. [2024-11-08 18:49:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.3307560137457044) internal successors, (1549), 1164 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1549 transitions. [2024-11-08 18:49:01,718 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1549 transitions. Word has length 58 [2024-11-08 18:49:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:01,718 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1549 transitions. [2024-11-08 18:49:01,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1549 transitions. [2024-11-08 18:49:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:49:01,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:01,724 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:01,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-08 18:49:01,725 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:01,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -27616633, now seen corresponding path program 1 times [2024-11-08 18:49:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380067408] [2024-11-08 18:49:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:02,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:02,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380067408] [2024-11-08 18:49:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380067408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:02,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:02,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:49:02,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934504636] [2024-11-08 18:49:02,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:02,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:49:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:02,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:49:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:49:02,181 INFO L87 Difference]: Start difference. First operand 1165 states and 1549 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:02,499 INFO L93 Difference]: Finished difference Result 1881 states and 2520 transitions. [2024-11-08 18:49:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:49:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:49:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:02,502 INFO L225 Difference]: With dead ends: 1881 [2024-11-08 18:49:02,502 INFO L226 Difference]: Without dead ends: 1123 [2024-11-08 18:49:02,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:49:02,504 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 119 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:02,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 366 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2024-11-08 18:49:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1105. [2024-11-08 18:49:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.3125) internal successors, (1449), 1104 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1449 transitions. [2024-11-08 18:49:02,522 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1449 transitions. Word has length 58 [2024-11-08 18:49:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:02,522 INFO L471 AbstractCegarLoop]: Abstraction has 1105 states and 1449 transitions. [2024-11-08 18:49:02,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1449 transitions. [2024-11-08 18:49:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:49:02,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:02,525 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:02,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-08 18:49:02,525 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:02,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1167416623, now seen corresponding path program 1 times [2024-11-08 18:49:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:02,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546421212] [2024-11-08 18:49:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:02,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:03,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546421212] [2024-11-08 18:49:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546421212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:03,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:03,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:49:03,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388119814] [2024-11-08 18:49:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:03,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:49:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:49:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:49:03,108 INFO L87 Difference]: Start difference. First operand 1105 states and 1449 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:03,430 INFO L93 Difference]: Finished difference Result 1540 states and 2062 transitions. [2024-11-08 18:49:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:49:03,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:49:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:03,433 INFO L225 Difference]: With dead ends: 1540 [2024-11-08 18:49:03,433 INFO L226 Difference]: Without dead ends: 1118 [2024-11-08 18:49:03,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:49:03,434 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 182 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:03,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 983 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-11-08 18:49:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1077. [2024-11-08 18:49:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.313197026022305) internal successors, (1413), 1076 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1413 transitions. [2024-11-08 18:49:03,451 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1413 transitions. Word has length 58 [2024-11-08 18:49:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:03,452 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1413 transitions. [2024-11-08 18:49:03,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1413 transitions. [2024-11-08 18:49:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:49:03,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:03,454 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:03,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-08 18:49:03,454 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:03,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1853814155, now seen corresponding path program 1 times [2024-11-08 18:49:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70159905] [2024-11-08 18:49:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:03,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70159905] [2024-11-08 18:49:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70159905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:03,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:49:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88206231] [2024-11-08 18:49:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:03,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:49:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:49:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:49:03,785 INFO L87 Difference]: Start difference. First operand 1077 states and 1413 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:03,963 INFO L93 Difference]: Finished difference Result 1526 states and 2037 transitions. [2024-11-08 18:49:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:49:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:49:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:03,966 INFO L225 Difference]: With dead ends: 1526 [2024-11-08 18:49:03,966 INFO L226 Difference]: Without dead ends: 1007 [2024-11-08 18:49:03,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:49:03,967 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 128 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:03,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 368 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2024-11-08 18:49:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1007. [2024-11-08 18:49:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 1006 states have (on average 1.3131212723658052) internal successors, (1321), 1006 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1321 transitions. [2024-11-08 18:49:03,983 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1321 transitions. Word has length 58 [2024-11-08 18:49:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:03,983 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1321 transitions. [2024-11-08 18:49:03,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1321 transitions. [2024-11-08 18:49:03,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:49:03,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:03,985 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:03,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-08 18:49:03,985 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:03,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:03,986 INFO L85 PathProgramCache]: Analyzing trace with hash 432343322, now seen corresponding path program 1 times [2024-11-08 18:49:03,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:03,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220628671] [2024-11-08 18:49:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:03,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:04,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220628671] [2024-11-08 18:49:04,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220628671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:04,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-08 18:49:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403691908] [2024-11-08 18:49:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:04,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:49:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:49:04,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:04,731 INFO L87 Difference]: Start difference. First operand 1007 states and 1321 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:04,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:04,885 INFO L93 Difference]: Finished difference Result 1545 states and 2079 transitions. [2024-11-08 18:49:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:49:04,885 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:49:04,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:04,888 INFO L225 Difference]: With dead ends: 1545 [2024-11-08 18:49:04,888 INFO L226 Difference]: Without dead ends: 1141 [2024-11-08 18:49:04,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:04,889 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 54 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:04,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1202 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-08 18:49:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1063. [2024-11-08 18:49:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.3145009416195856) internal successors, (1396), 1062 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1396 transitions. [2024-11-08 18:49:04,907 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1396 transitions. Word has length 58 [2024-11-08 18:49:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:04,907 INFO L471 AbstractCegarLoop]: Abstraction has 1063 states and 1396 transitions. [2024-11-08 18:49:04,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1396 transitions. [2024-11-08 18:49:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:49:04,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:04,909 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:04,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-08 18:49:04,910 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:04,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash -149458713, now seen corresponding path program 1 times [2024-11-08 18:49:04,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336909700] [2024-11-08 18:49:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:04,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:06,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:06,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336909700] [2024-11-08 18:49:06,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336909700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:06,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:06,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-08 18:49:06,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755902330] [2024-11-08 18:49:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:06,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:49:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:49:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:06,080 INFO L87 Difference]: Start difference. First operand 1063 states and 1396 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:06,407 INFO L93 Difference]: Finished difference Result 1636 states and 2189 transitions. [2024-11-08 18:49:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:49:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:49:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:06,410 INFO L225 Difference]: With dead ends: 1636 [2024-11-08 18:49:06,410 INFO L226 Difference]: Without dead ends: 1244 [2024-11-08 18:49:06,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:49:06,411 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 115 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:06,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1223 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2024-11-08 18:49:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1093. [2024-11-08 18:49:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 1.3122710622710623) internal successors, (1433), 1092 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1433 transitions. [2024-11-08 18:49:06,430 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1433 transitions. Word has length 58 [2024-11-08 18:49:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:06,430 INFO L471 AbstractCegarLoop]: Abstraction has 1093 states and 1433 transitions. [2024-11-08 18:49:06,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1433 transitions. [2024-11-08 18:49:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:49:06,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:06,432 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:06,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-08 18:49:06,432 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:06,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash -84339474, now seen corresponding path program 1 times [2024-11-08 18:49:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267537974] [2024-11-08 18:49:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:07,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267537974] [2024-11-08 18:49:07,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267537974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:07,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:07,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-08 18:49:07,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530377450] [2024-11-08 18:49:07,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:07,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:49:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:49:07,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:07,281 INFO L87 Difference]: Start difference. First operand 1093 states and 1433 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:07,609 INFO L93 Difference]: Finished difference Result 1610 states and 2150 transitions. [2024-11-08 18:49:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:49:07,610 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:49:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:07,613 INFO L225 Difference]: With dead ends: 1610 [2024-11-08 18:49:07,613 INFO L226 Difference]: Without dead ends: 1218 [2024-11-08 18:49:07,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:07,614 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 93 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:07,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1292 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2024-11-08 18:49:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1093. [2024-11-08 18:49:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 1.3122710622710623) internal successors, (1433), 1092 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1433 transitions. [2024-11-08 18:49:07,630 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1433 transitions. Word has length 58 [2024-11-08 18:49:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:07,631 INFO L471 AbstractCegarLoop]: Abstraction has 1093 states and 1433 transitions. [2024-11-08 18:49:07,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1433 transitions. [2024-11-08 18:49:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:07,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:07,633 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:07,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-08 18:49:07,633 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:07,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash 953900685, now seen corresponding path program 1 times [2024-11-08 18:49:07,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:07,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412601815] [2024-11-08 18:49:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:07,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412601815] [2024-11-08 18:49:07,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412601815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:07,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:49:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176208285] [2024-11-08 18:49:07,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:07,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:49:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:49:08,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:49:08,000 INFO L87 Difference]: Start difference. First operand 1093 states and 1433 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:08,054 INFO L93 Difference]: Finished difference Result 1516 states and 2034 transitions. [2024-11-08 18:49:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:49:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:08,057 INFO L225 Difference]: With dead ends: 1516 [2024-11-08 18:49:08,057 INFO L226 Difference]: Without dead ends: 1020 [2024-11-08 18:49:08,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:49:08,058 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 26 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:08,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 654 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:49:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-08 18:49:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 964. [2024-11-08 18:49:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.3198338525441329) internal successors, (1271), 963 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1271 transitions. [2024-11-08 18:49:08,073 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1271 transitions. Word has length 59 [2024-11-08 18:49:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:08,073 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1271 transitions. [2024-11-08 18:49:08,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1271 transitions. [2024-11-08 18:49:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:08,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:08,075 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:08,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-08 18:49:08,075 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:08,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash 638267629, now seen corresponding path program 1 times [2024-11-08 18:49:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:08,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574803717] [2024-11-08 18:49:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:08,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574803717] [2024-11-08 18:49:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574803717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:09,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:09,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-11-08 18:49:09,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189100002] [2024-11-08 18:49:09,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:09,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:49:09,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:49:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:49:09,133 INFO L87 Difference]: Start difference. First operand 964 states and 1271 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:09,398 INFO L93 Difference]: Finished difference Result 1451 states and 1958 transitions. [2024-11-08 18:49:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:49:09,399 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:09,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:09,401 INFO L225 Difference]: With dead ends: 1451 [2024-11-08 18:49:09,401 INFO L226 Difference]: Without dead ends: 1059 [2024-11-08 18:49:09,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:49:09,402 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 167 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:09,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1563 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-08 18:49:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 930. [2024-11-08 18:49:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.3229278794402584) internal successors, (1229), 929 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1229 transitions. [2024-11-08 18:49:09,416 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1229 transitions. Word has length 59 [2024-11-08 18:49:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:09,417 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1229 transitions. [2024-11-08 18:49:09,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1229 transitions. [2024-11-08 18:49:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:09,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:09,418 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:09,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-08 18:49:09,419 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:09,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1388265054, now seen corresponding path program 1 times [2024-11-08 18:49:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:09,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829598311] [2024-11-08 18:49:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:09,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829598311] [2024-11-08 18:49:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829598311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:09,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:09,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 18:49:09,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753252363] [2024-11-08 18:49:09,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:09,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:49:09,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:09,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:49:09,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:49:09,829 INFO L87 Difference]: Start difference. First operand 930 states and 1229 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:09,902 INFO L93 Difference]: Finished difference Result 1391 states and 1872 transitions. [2024-11-08 18:49:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:49:09,902 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:09,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:09,904 INFO L225 Difference]: With dead ends: 1391 [2024-11-08 18:49:09,904 INFO L226 Difference]: Without dead ends: 950 [2024-11-08 18:49:09,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:49:09,905 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 40 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:09,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 661 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:09,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-11-08 18:49:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 916. [2024-11-08 18:49:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.3158469945355191) internal successors, (1204), 915 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1204 transitions. [2024-11-08 18:49:09,917 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1204 transitions. Word has length 59 [2024-11-08 18:49:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:09,918 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1204 transitions. [2024-11-08 18:49:09,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1204 transitions. [2024-11-08 18:49:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:09,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:09,920 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:09,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-08 18:49:09,920 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:09,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash 626988518, now seen corresponding path program 1 times [2024-11-08 18:49:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:09,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020731177] [2024-11-08 18:49:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:10,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:10,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020731177] [2024-11-08 18:49:10,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020731177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:10,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:10,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 18:49:10,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620829718] [2024-11-08 18:49:10,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:10,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:49:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:49:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:49:10,439 INFO L87 Difference]: Start difference. First operand 916 states and 1204 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:10,526 INFO L93 Difference]: Finished difference Result 1339 states and 1801 transitions. [2024-11-08 18:49:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:49:10,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:10,528 INFO L225 Difference]: With dead ends: 1339 [2024-11-08 18:49:10,528 INFO L226 Difference]: Without dead ends: 913 [2024-11-08 18:49:10,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:49:10,529 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 36 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:10,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 917 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-11-08 18:49:10,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 883. [2024-11-08 18:49:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.3231292517006803) internal successors, (1167), 882 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1167 transitions. [2024-11-08 18:49:10,540 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1167 transitions. Word has length 59 [2024-11-08 18:49:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:10,541 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1167 transitions. [2024-11-08 18:49:10,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1167 transitions. [2024-11-08 18:49:10,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:10,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:10,542 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:10,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-08 18:49:10,543 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:10,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1323145815, now seen corresponding path program 1 times [2024-11-08 18:49:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478638832] [2024-11-08 18:49:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:10,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:10,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:10,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478638832] [2024-11-08 18:49:10,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478638832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:10,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:10,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 18:49:10,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570490486] [2024-11-08 18:49:10,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:10,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:49:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:10,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:49:10,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:49:10,977 INFO L87 Difference]: Start difference. First operand 883 states and 1167 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:11,159 INFO L93 Difference]: Finished difference Result 1451 states and 1959 transitions. [2024-11-08 18:49:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:49:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:11,162 INFO L225 Difference]: With dead ends: 1451 [2024-11-08 18:49:11,162 INFO L226 Difference]: Without dead ends: 1029 [2024-11-08 18:49:11,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:49:11,163 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 149 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:11,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 473 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-08 18:49:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 978. [2024-11-08 18:49:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3203684749232343) internal successors, (1290), 977 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1290 transitions. [2024-11-08 18:49:11,176 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1290 transitions. Word has length 59 [2024-11-08 18:49:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:11,176 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1290 transitions. [2024-11-08 18:49:11,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1290 transitions. [2024-11-08 18:49:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:11,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:11,178 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:11,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-08 18:49:11,178 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:11,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash 692107757, now seen corresponding path program 1 times [2024-11-08 18:49:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:11,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691033550] [2024-11-08 18:49:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:11,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:11,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691033550] [2024-11-08 18:49:11,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691033550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:11,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 18:49:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480061256] [2024-11-08 18:49:11,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:11,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:49:11,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:49:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:49:11,581 INFO L87 Difference]: Start difference. First operand 978 states and 1290 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:11,647 INFO L93 Difference]: Finished difference Result 1603 states and 2123 transitions. [2024-11-08 18:49:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:49:11,647 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:11,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:11,649 INFO L225 Difference]: With dead ends: 1603 [2024-11-08 18:49:11,649 INFO L226 Difference]: Without dead ends: 1128 [2024-11-08 18:49:11,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:49:11,650 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 30 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:11,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 958 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2024-11-08 18:49:11,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 978. [2024-11-08 18:49:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3183213920163768) internal successors, (1288), 977 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1288 transitions. [2024-11-08 18:49:11,661 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1288 transitions. Word has length 59 [2024-11-08 18:49:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:11,661 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1288 transitions. [2024-11-08 18:49:11,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1288 transitions. [2024-11-08 18:49:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:11,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:11,663 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:11,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-08 18:49:11,663 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:11,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1361134129, now seen corresponding path program 1 times [2024-11-08 18:49:11,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:11,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603498629] [2024-11-08 18:49:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:11,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:12,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:12,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603498629] [2024-11-08 18:49:12,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603498629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:12,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:12,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-08 18:49:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429825647] [2024-11-08 18:49:12,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:12,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:49:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:49:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:12,520 INFO L87 Difference]: Start difference. First operand 978 states and 1288 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:12,846 INFO L93 Difference]: Finished difference Result 1513 states and 2022 transitions. [2024-11-08 18:49:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:49:12,847 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:12,849 INFO L225 Difference]: With dead ends: 1513 [2024-11-08 18:49:12,849 INFO L226 Difference]: Without dead ends: 1085 [2024-11-08 18:49:12,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:12,850 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 122 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:12,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1155 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:12,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2024-11-08 18:49:12,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1000. [2024-11-08 18:49:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.3143143143143143) internal successors, (1313), 999 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1313 transitions. [2024-11-08 18:49:12,863 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1313 transitions. Word has length 59 [2024-11-08 18:49:12,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:12,863 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1313 transitions. [2024-11-08 18:49:12,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1313 transitions. [2024-11-08 18:49:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:12,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:12,865 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:12,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-08 18:49:12,866 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:12,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:12,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1616672522, now seen corresponding path program 1 times [2024-11-08 18:49:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:12,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646397927] [2024-11-08 18:49:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646397927] [2024-11-08 18:49:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646397927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:13,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:13,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-08 18:49:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824125892] [2024-11-08 18:49:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:13,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:49:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:49:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:13,852 INFO L87 Difference]: Start difference. First operand 1000 states and 1313 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:14,048 INFO L93 Difference]: Finished difference Result 1552 states and 2075 transitions. [2024-11-08 18:49:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:49:14,048 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:14,050 INFO L225 Difference]: With dead ends: 1552 [2024-11-08 18:49:14,050 INFO L226 Difference]: Without dead ends: 1124 [2024-11-08 18:49:14,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:14,051 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 115 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:14,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1210 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-08 18:49:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1000. [2024-11-08 18:49:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.3143143143143143) internal successors, (1313), 999 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1313 transitions. [2024-11-08 18:49:14,065 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1313 transitions. Word has length 59 [2024-11-08 18:49:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:14,065 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1313 transitions. [2024-11-08 18:49:14,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1313 transitions. [2024-11-08 18:49:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:14,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:14,067 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:14,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-08 18:49:14,067 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:14,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2029529577, now seen corresponding path program 1 times [2024-11-08 18:49:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145756850] [2024-11-08 18:49:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:14,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:14,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145756850] [2024-11-08 18:49:14,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145756850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:14,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:14,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 18:49:14,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21966673] [2024-11-08 18:49:14,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:14,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:49:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:49:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:14,686 INFO L87 Difference]: Start difference. First operand 1000 states and 1313 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:14,844 INFO L93 Difference]: Finished difference Result 1529 states and 2043 transitions. [2024-11-08 18:49:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:49:14,845 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:14,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:14,846 INFO L225 Difference]: With dead ends: 1529 [2024-11-08 18:49:14,846 INFO L226 Difference]: Without dead ends: 1089 [2024-11-08 18:49:14,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:14,847 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 112 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:14,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1245 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-11-08 18:49:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1052. [2024-11-08 18:49:14,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.308277830637488) internal successors, (1375), 1051 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1375 transitions. [2024-11-08 18:49:14,860 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1375 transitions. Word has length 59 [2024-11-08 18:49:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:14,860 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1375 transitions. [2024-11-08 18:49:14,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1375 transitions. [2024-11-08 18:49:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:14,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:14,862 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:14,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-08 18:49:14,863 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:14,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1771463162, now seen corresponding path program 1 times [2024-11-08 18:49:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:14,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978406693] [2024-11-08 18:49:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978406693] [2024-11-08 18:49:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978406693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:15,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-08 18:49:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041202063] [2024-11-08 18:49:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:15,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:49:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:49:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:15,471 INFO L87 Difference]: Start difference. First operand 1052 states and 1375 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:15,625 INFO L93 Difference]: Finished difference Result 1569 states and 2096 transitions. [2024-11-08 18:49:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:49:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:15,626 INFO L225 Difference]: With dead ends: 1569 [2024-11-08 18:49:15,626 INFO L226 Difference]: Without dead ends: 1111 [2024-11-08 18:49:15,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:15,627 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 56 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:15,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1323 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-11-08 18:49:15,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1098. [2024-11-08 18:49:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.2944393801276208) internal successors, (1420), 1097 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1420 transitions. [2024-11-08 18:49:15,638 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1420 transitions. Word has length 59 [2024-11-08 18:49:15,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:15,639 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1420 transitions. [2024-11-08 18:49:15,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1420 transitions. [2024-11-08 18:49:15,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:15,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:15,641 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:15,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-08 18:49:15,641 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:15,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash -637849825, now seen corresponding path program 1 times [2024-11-08 18:49:15,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:15,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021897705] [2024-11-08 18:49:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:15,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:16,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021897705] [2024-11-08 18:49:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021897705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:16,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-08 18:49:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287976189] [2024-11-08 18:49:16,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:16,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:49:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:49:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:49:16,641 INFO L87 Difference]: Start difference. First operand 1098 states and 1420 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:16,987 INFO L93 Difference]: Finished difference Result 1550 states and 2055 transitions. [2024-11-08 18:49:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 18:49:16,988 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:16,990 INFO L225 Difference]: With dead ends: 1550 [2024-11-08 18:49:16,990 INFO L226 Difference]: Without dead ends: 1122 [2024-11-08 18:49:16,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:49:16,991 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 136 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:16,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1219 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-11-08 18:49:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1098. [2024-11-08 18:49:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.2944393801276208) internal successors, (1420), 1097 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1420 transitions. [2024-11-08 18:49:17,000 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1420 transitions. Word has length 59 [2024-11-08 18:49:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:17,000 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1420 transitions. [2024-11-08 18:49:17,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1420 transitions. [2024-11-08 18:49:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:49:17,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:17,002 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:17,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-08 18:49:17,003 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:17,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2034415139, now seen corresponding path program 1 times [2024-11-08 18:49:17,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:17,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737335060] [2024-11-08 18:49:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737335060] [2024-11-08 18:49:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737335060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:17,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-11-08 18:49:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333838149] [2024-11-08 18:49:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:17,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:49:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:49:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:49:17,964 INFO L87 Difference]: Start difference. First operand 1098 states and 1420 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:18,190 INFO L93 Difference]: Finished difference Result 1573 states and 2085 transitions. [2024-11-08 18:49:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:49:18,190 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:49:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:18,192 INFO L225 Difference]: With dead ends: 1573 [2024-11-08 18:49:18,192 INFO L226 Difference]: Without dead ends: 1145 [2024-11-08 18:49:18,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:49:18,193 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 49 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:18,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1423 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2024-11-08 18:49:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1094. [2024-11-08 18:49:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 1.2946020128087832) internal successors, (1415), 1093 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1415 transitions. [2024-11-08 18:49:18,211 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1415 transitions. Word has length 59 [2024-11-08 18:49:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:18,211 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1415 transitions. [2024-11-08 18:49:18,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1415 transitions. [2024-11-08 18:49:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:18,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:18,213 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:18,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-08 18:49:18,213 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:18,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1521814143, now seen corresponding path program 1 times [2024-11-08 18:49:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:18,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491455679] [2024-11-08 18:49:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:18,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:18,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491455679] [2024-11-08 18:49:18,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491455679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:18,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-08 18:49:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382058741] [2024-11-08 18:49:18,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:18,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:49:18,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:49:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:49:18,560 INFO L87 Difference]: Start difference. First operand 1094 states and 1415 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:18,641 INFO L93 Difference]: Finished difference Result 1528 states and 2031 transitions. [2024-11-08 18:49:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:49:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:18,643 INFO L225 Difference]: With dead ends: 1528 [2024-11-08 18:49:18,644 INFO L226 Difference]: Without dead ends: 1046 [2024-11-08 18:49:18,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:49:18,644 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 25 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:18,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1137 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2024-11-08 18:49:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 819. [2024-11-08 18:49:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 1.323960880195599) internal successors, (1083), 818 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1083 transitions. [2024-11-08 18:49:18,653 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1083 transitions. Word has length 60 [2024-11-08 18:49:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:18,653 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1083 transitions. [2024-11-08 18:49:18,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1083 transitions. [2024-11-08 18:49:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:18,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:18,654 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:18,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-08 18:49:18,654 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:18,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1389889678, now seen corresponding path program 1 times [2024-11-08 18:49:18,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:18,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372319850] [2024-11-08 18:49:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:19,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372319850] [2024-11-08 18:49:19,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372319850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:49:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052714803] [2024-11-08 18:49:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:19,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:49:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:49:19,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:49:19,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:49:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:19,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-08 18:49:19,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:49:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:20,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:49:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052714803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:49:21,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:49:21,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 11] total 27 [2024-11-08 18:49:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627647993] [2024-11-08 18:49:21,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:49:21,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 18:49:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 18:49:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:49:21,711 INFO L87 Difference]: Start difference. First operand 819 states and 1083 transitions. Second operand has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:22,347 INFO L93 Difference]: Finished difference Result 1287 states and 1739 transitions. [2024-11-08 18:49:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 18:49:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:22,348 INFO L225 Difference]: With dead ends: 1287 [2024-11-08 18:49:22,349 INFO L226 Difference]: Without dead ends: 859 [2024-11-08 18:49:22,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=927, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:49:22,350 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 128 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:22,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 817 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:49:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-08 18:49:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 828. [2024-11-08 18:49:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 1.324062877871826) internal successors, (1095), 827 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1095 transitions. [2024-11-08 18:49:22,361 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1095 transitions. Word has length 60 [2024-11-08 18:49:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:22,362 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1095 transitions. [2024-11-08 18:49:22,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1095 transitions. [2024-11-08 18:49:22,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:22,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:22,363 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:22,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:49:22,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-08 18:49:22,569 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:22,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:22,569 INFO L85 PathProgramCache]: Analyzing trace with hash -567270987, now seen corresponding path program 1 times [2024-11-08 18:49:22,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:22,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260895921] [2024-11-08 18:49:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:22,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260895921] [2024-11-08 18:49:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260895921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:23,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-08 18:49:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735532121] [2024-11-08 18:49:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:23,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:49:23,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:23,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:49:23,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:49:23,346 INFO L87 Difference]: Start difference. First operand 828 states and 1095 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:23,488 INFO L93 Difference]: Finished difference Result 1312 states and 1771 transitions. [2024-11-08 18:49:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:49:23,489 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:23,490 INFO L225 Difference]: With dead ends: 1312 [2024-11-08 18:49:23,490 INFO L226 Difference]: Without dead ends: 863 [2024-11-08 18:49:23,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:49:23,491 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 95 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:23,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1133 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-08 18:49:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 830. [2024-11-08 18:49:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.3232810615199035) internal successors, (1097), 829 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1097 transitions. [2024-11-08 18:49:23,503 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1097 transitions. Word has length 60 [2024-11-08 18:49:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:23,503 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1097 transitions. [2024-11-08 18:49:23,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1097 transitions. [2024-11-08 18:49:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:23,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:23,505 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:23,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-08 18:49:23,505 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:23,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash -220807445, now seen corresponding path program 1 times [2024-11-08 18:49:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024747843] [2024-11-08 18:49:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:24,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024747843] [2024-11-08 18:49:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024747843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-08 18:49:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721756540] [2024-11-08 18:49:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:24,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:49:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:49:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:24,159 INFO L87 Difference]: Start difference. First operand 830 states and 1097 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:24,334 INFO L93 Difference]: Finished difference Result 1317 states and 1780 transitions. [2024-11-08 18:49:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:49:24,335 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:24,336 INFO L225 Difference]: With dead ends: 1317 [2024-11-08 18:49:24,336 INFO L226 Difference]: Without dead ends: 880 [2024-11-08 18:49:24,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:24,337 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 89 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:24,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1424 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-08 18:49:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 798. [2024-11-08 18:49:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.3312421580928482) internal successors, (1061), 797 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1061 transitions. [2024-11-08 18:49:24,346 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1061 transitions. Word has length 60 [2024-11-08 18:49:24,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:24,347 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1061 transitions. [2024-11-08 18:49:24,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1061 transitions. [2024-11-08 18:49:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:24,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:24,348 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:24,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-08 18:49:24,348 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:24,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:24,349 INFO L85 PathProgramCache]: Analyzing trace with hash -502151748, now seen corresponding path program 1 times [2024-11-08 18:49:24,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:24,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826122137] [2024-11-08 18:49:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:24,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:25,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:25,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826122137] [2024-11-08 18:49:25,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826122137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:25,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:25,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-08 18:49:25,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612081536] [2024-11-08 18:49:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:25,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:49:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:49:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:49:25,304 INFO L87 Difference]: Start difference. First operand 798 states and 1061 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:25,504 INFO L93 Difference]: Finished difference Result 1307 states and 1763 transitions. [2024-11-08 18:49:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:49:25,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:25,507 INFO L225 Difference]: With dead ends: 1307 [2024-11-08 18:49:25,507 INFO L226 Difference]: Without dead ends: 862 [2024-11-08 18:49:25,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:49:25,508 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 89 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:25,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1050 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2024-11-08 18:49:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 818. [2024-11-08 18:49:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.3255813953488371) internal successors, (1083), 817 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1083 transitions. [2024-11-08 18:49:25,519 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1083 transitions. Word has length 60 [2024-11-08 18:49:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:25,519 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 1083 transitions. [2024-11-08 18:49:25,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1083 transitions. [2024-11-08 18:49:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:25,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:25,520 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:25,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-11-08 18:49:25,521 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:25,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2039981522, now seen corresponding path program 1 times [2024-11-08 18:49:25,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:25,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174650465] [2024-11-08 18:49:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:25,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:26,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:26,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174650465] [2024-11-08 18:49:26,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174650465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:26,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:26,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-08 18:49:26,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347228845] [2024-11-08 18:49:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:26,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:49:26,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:49:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:26,848 INFO L87 Difference]: Start difference. First operand 818 states and 1083 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:27,119 INFO L93 Difference]: Finished difference Result 1283 states and 1733 transitions. [2024-11-08 18:49:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:49:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:27,121 INFO L225 Difference]: With dead ends: 1283 [2024-11-08 18:49:27,121 INFO L226 Difference]: Without dead ends: 846 [2024-11-08 18:49:27,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:49:27,122 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 110 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:27,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1229 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-08 18:49:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 798. [2024-11-08 18:49:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.3312421580928482) internal successors, (1061), 797 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1061 transitions. [2024-11-08 18:49:27,133 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1061 transitions. Word has length 60 [2024-11-08 18:49:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:27,133 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1061 transitions. [2024-11-08 18:49:27,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1061 transitions. [2024-11-08 18:49:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:27,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:27,135 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:27,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-11-08 18:49:27,135 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:27,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1947894787, now seen corresponding path program 1 times [2024-11-08 18:49:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:27,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634866206] [2024-11-08 18:49:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:27,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:27,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634866206] [2024-11-08 18:49:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634866206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:27,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-08 18:49:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460895393] [2024-11-08 18:49:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:27,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:49:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:49:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:27,829 INFO L87 Difference]: Start difference. First operand 798 states and 1061 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:27,988 INFO L93 Difference]: Finished difference Result 1326 states and 1786 transitions. [2024-11-08 18:49:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:49:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:27,990 INFO L225 Difference]: With dead ends: 1326 [2024-11-08 18:49:27,991 INFO L226 Difference]: Without dead ends: 877 [2024-11-08 18:49:27,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:49:27,992 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 41 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:27,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1551 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-08 18:49:28,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 832. [2024-11-08 18:49:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.3237063778580025) internal successors, (1100), 831 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1100 transitions. [2024-11-08 18:49:28,003 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1100 transitions. Word has length 60 [2024-11-08 18:49:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:28,004 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1100 transitions. [2024-11-08 18:49:28,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1100 transitions. [2024-11-08 18:49:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:49:28,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:28,005 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:28,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-11-08 18:49:28,006 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:28,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash 410065013, now seen corresponding path program 1 times [2024-11-08 18:49:28,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:28,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263638865] [2024-11-08 18:49:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:28,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:28,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:28,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263638865] [2024-11-08 18:49:28,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263638865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:28,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:28,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 18:49:28,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394965538] [2024-11-08 18:49:28,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:28,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:49:28,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:49:28,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:28,716 INFO L87 Difference]: Start difference. First operand 832 states and 1100 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:29,104 INFO L93 Difference]: Finished difference Result 1537 states and 2073 transitions. [2024-11-08 18:49:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:49:29,105 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:49:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:29,107 INFO L225 Difference]: With dead ends: 1537 [2024-11-08 18:49:29,107 INFO L226 Difference]: Without dead ends: 1100 [2024-11-08 18:49:29,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:49:29,108 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 244 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:29,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1429 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2024-11-08 18:49:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 983. [2024-11-08 18:49:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 982 states have (on average 1.3156822810590632) internal successors, (1292), 982 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1292 transitions. [2024-11-08 18:49:29,122 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1292 transitions. Word has length 60 [2024-11-08 18:49:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:29,122 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1292 transitions. [2024-11-08 18:49:29,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1292 transitions. [2024-11-08 18:49:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:49:29,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:29,124 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:29,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-11-08 18:49:29,124 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:29,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash -521376634, now seen corresponding path program 1 times [2024-11-08 18:49:29,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265828994] [2024-11-08 18:49:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:29,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:29,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265828994] [2024-11-08 18:49:29,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265828994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:29,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:29,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-08 18:49:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436212624] [2024-11-08 18:49:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:29,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:49:29,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:29,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:49:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:49:29,801 INFO L87 Difference]: Start difference. First operand 983 states and 1292 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:30,086 INFO L93 Difference]: Finished difference Result 1554 states and 2087 transitions. [2024-11-08 18:49:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:49:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 18:49:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:30,087 INFO L225 Difference]: With dead ends: 1554 [2024-11-08 18:49:30,087 INFO L226 Difference]: Without dead ends: 1074 [2024-11-08 18:49:30,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:49:30,088 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 79 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:30,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1964 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2024-11-08 18:49:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 963. [2024-11-08 18:49:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.32016632016632) internal successors, (1270), 962 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1270 transitions. [2024-11-08 18:49:30,099 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1270 transitions. Word has length 61 [2024-11-08 18:49:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:30,100 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1270 transitions. [2024-11-08 18:49:30,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1270 transitions. [2024-11-08 18:49:30,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:49:30,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:30,101 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:30,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-11-08 18:49:30,102 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:30,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:30,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1102147551, now seen corresponding path program 1 times [2024-11-08 18:49:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:30,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250871650] [2024-11-08 18:49:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:30,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:30,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250871650] [2024-11-08 18:49:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250871650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:30,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:30,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 18:49:30,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283933044] [2024-11-08 18:49:30,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:30,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:49:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:49:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:30,670 INFO L87 Difference]: Start difference. First operand 963 states and 1270 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:30,780 INFO L93 Difference]: Finished difference Result 1584 states and 2115 transitions. [2024-11-08 18:49:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:49:30,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 18:49:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:30,783 INFO L225 Difference]: With dead ends: 1584 [2024-11-08 18:49:30,783 INFO L226 Difference]: Without dead ends: 1104 [2024-11-08 18:49:30,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:30,784 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 48 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:30,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1239 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2024-11-08 18:49:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1013. [2024-11-08 18:49:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 1.3102766798418972) internal successors, (1326), 1012 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1326 transitions. [2024-11-08 18:49:30,805 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1326 transitions. Word has length 61 [2024-11-08 18:49:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:30,806 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1326 transitions. [2024-11-08 18:49:30,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:30,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1326 transitions. [2024-11-08 18:49:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:49:30,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:30,808 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:30,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-11-08 18:49:30,809 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:30,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2059206408, now seen corresponding path program 1 times [2024-11-08 18:49:30,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:30,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471349318] [2024-11-08 18:49:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471349318] [2024-11-08 18:49:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471349318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:49:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442604778] [2024-11-08 18:49:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:32,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:49:32,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:49:32,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:49:32,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:49:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:32,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-08 18:49:32,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:49:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:33,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:49:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442604778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:33,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:49:33,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [26] total 48 [2024-11-08 18:49:33,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130201588] [2024-11-08 18:49:33,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:33,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:49:33,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:33,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:49:33,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2135, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 18:49:33,977 INFO L87 Difference]: Start difference. First operand 1013 states and 1326 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:34,344 INFO L93 Difference]: Finished difference Result 1612 states and 2163 transitions. [2024-11-08 18:49:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:49:34,345 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 18:49:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:34,346 INFO L225 Difference]: With dead ends: 1612 [2024-11-08 18:49:34,346 INFO L226 Difference]: Without dead ends: 1132 [2024-11-08 18:49:34,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=2417, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 18:49:34,347 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 43 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:34,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1713 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:49:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2024-11-08 18:49:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1017. [2024-11-08 18:49:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 1.312007874015748) internal successors, (1333), 1016 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1333 transitions. [2024-11-08 18:49:34,355 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1333 transitions. Word has length 61 [2024-11-08 18:49:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:34,355 INFO L471 AbstractCegarLoop]: Abstraction has 1017 states and 1333 transitions. [2024-11-08 18:49:34,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1333 transitions. [2024-11-08 18:49:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:49:34,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:34,357 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:34,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:49:34,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-08 18:49:34,558 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:34,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1739980734, now seen corresponding path program 1 times [2024-11-08 18:49:34,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:34,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138132987] [2024-11-08 18:49:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:34,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:34,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138132987] [2024-11-08 18:49:34,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138132987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:34,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:34,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:49:34,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582217113] [2024-11-08 18:49:34,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:34,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:49:34,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:49:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:49:34,970 INFO L87 Difference]: Start difference. First operand 1017 states and 1333 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:35,150 INFO L93 Difference]: Finished difference Result 1632 states and 2178 transitions. [2024-11-08 18:49:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:49:35,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 18:49:35,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:35,152 INFO L225 Difference]: With dead ends: 1632 [2024-11-08 18:49:35,152 INFO L226 Difference]: Without dead ends: 962 [2024-11-08 18:49:35,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:49:35,153 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 124 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:35,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 368 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-08 18:49:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 941. [2024-11-08 18:49:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 940 states have (on average 1.3170212765957447) internal successors, (1238), 940 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1238 transitions. [2024-11-08 18:49:35,162 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1238 transitions. Word has length 61 [2024-11-08 18:49:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:35,162 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1238 transitions. [2024-11-08 18:49:35,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1238 transitions. [2024-11-08 18:49:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:49:35,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:35,163 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:35,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-11-08 18:49:35,163 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:35,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1208731962, now seen corresponding path program 1 times [2024-11-08 18:49:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330934370] [2024-11-08 18:49:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:35,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330934370] [2024-11-08 18:49:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330934370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:35,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:35,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 18:49:35,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053941549] [2024-11-08 18:49:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:35,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:49:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:49:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:35,659 INFO L87 Difference]: Start difference. First operand 941 states and 1238 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:35,799 INFO L93 Difference]: Finished difference Result 1552 states and 2073 transitions. [2024-11-08 18:49:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:49:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:49:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:35,801 INFO L225 Difference]: With dead ends: 1552 [2024-11-08 18:49:35,801 INFO L226 Difference]: Without dead ends: 1068 [2024-11-08 18:49:35,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:35,802 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 43 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:35,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1432 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-11-08 18:49:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 953. [2024-11-08 18:49:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 952 states have (on average 1.3140756302521008) internal successors, (1251), 952 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1251 transitions. [2024-11-08 18:49:35,814 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1251 transitions. Word has length 62 [2024-11-08 18:49:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:35,815 INFO L471 AbstractCegarLoop]: Abstraction has 953 states and 1251 transitions. [2024-11-08 18:49:35,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1251 transitions. [2024-11-08 18:49:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:49:35,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:35,816 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:35,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-11-08 18:49:35,817 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:35,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 540822140, now seen corresponding path program 1 times [2024-11-08 18:49:35,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:35,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586958554] [2024-11-08 18:49:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:35,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:36,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:36,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586958554] [2024-11-08 18:49:36,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586958554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:36,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:36,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-08 18:49:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888425923] [2024-11-08 18:49:36,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:36,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:49:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:49:36,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:49:36,367 INFO L87 Difference]: Start difference. First operand 953 states and 1251 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:36,473 INFO L93 Difference]: Finished difference Result 1524 states and 2034 transitions. [2024-11-08 18:49:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 18:49:36,474 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:49:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:36,475 INFO L225 Difference]: With dead ends: 1524 [2024-11-08 18:49:36,476 INFO L226 Difference]: Without dead ends: 1022 [2024-11-08 18:49:36,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:49:36,477 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 44 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:36,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1160 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2024-11-08 18:49:36,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1015. [2024-11-08 18:49:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.2958579881656804) internal successors, (1314), 1014 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1314 transitions. [2024-11-08 18:49:36,489 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1314 transitions. Word has length 62 [2024-11-08 18:49:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:36,489 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1314 transitions. [2024-11-08 18:49:36,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1314 transitions. [2024-11-08 18:49:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:49:36,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:36,491 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:36,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-11-08 18:49:36,491 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:36,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:36,492 INFO L85 PathProgramCache]: Analyzing trace with hash -718138695, now seen corresponding path program 1 times [2024-11-08 18:49:36,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:36,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670663510] [2024-11-08 18:49:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:36,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:37,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:37,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670663510] [2024-11-08 18:49:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670663510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:37,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:37,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:49:37,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415406628] [2024-11-08 18:49:37,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:37,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:49:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:49:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:49:37,003 INFO L87 Difference]: Start difference. First operand 1015 states and 1314 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:37,803 INFO L93 Difference]: Finished difference Result 1529 states and 2015 transitions. [2024-11-08 18:49:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:49:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:49:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:37,805 INFO L225 Difference]: With dead ends: 1529 [2024-11-08 18:49:37,805 INFO L226 Difference]: Without dead ends: 920 [2024-11-08 18:49:37,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:49:37,806 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 117 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:37,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 368 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:49:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-08 18:49:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 914. [2024-11-08 18:49:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 1.276013143483023) internal successors, (1165), 913 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1165 transitions. [2024-11-08 18:49:37,815 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1165 transitions. Word has length 62 [2024-11-08 18:49:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:37,815 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1165 transitions. [2024-11-08 18:49:37,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1165 transitions. [2024-11-08 18:49:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:49:37,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:37,816 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:37,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-11-08 18:49:37,816 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:37,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1474834936, now seen corresponding path program 1 times [2024-11-08 18:49:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592204256] [2024-11-08 18:49:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592204256] [2024-11-08 18:49:38,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592204256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:38,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:38,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-08 18:49:38,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626456497] [2024-11-08 18:49:38,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:38,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:49:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:49:38,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:49:38,489 INFO L87 Difference]: Start difference. First operand 914 states and 1165 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:38,643 INFO L93 Difference]: Finished difference Result 1326 states and 1742 transitions. [2024-11-08 18:49:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 18:49:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:49:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:38,644 INFO L225 Difference]: With dead ends: 1326 [2024-11-08 18:49:38,644 INFO L226 Difference]: Without dead ends: 943 [2024-11-08 18:49:38,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:49:38,645 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 54 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:38,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1088 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-08 18:49:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 929. [2024-11-08 18:49:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.2747844827586208) internal successors, (1183), 928 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1183 transitions. [2024-11-08 18:49:38,652 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1183 transitions. Word has length 62 [2024-11-08 18:49:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:38,653 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1183 transitions. [2024-11-08 18:49:38,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1183 transitions. [2024-11-08 18:49:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:49:38,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:38,654 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:49:38,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-11-08 18:49:38,654 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:38,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2087639320, now seen corresponding path program 1 times [2024-11-08 18:49:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:38,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929514539] [2024-11-08 18:49:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:38,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:40,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929514539] [2024-11-08 18:49:40,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929514539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:40,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:40,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:49:40,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748001775] [2024-11-08 18:49:40,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:40,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:49:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:40,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:49:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:49:40,909 INFO L87 Difference]: Start difference. First operand 929 states and 1183 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:42,300 INFO L93 Difference]: Finished difference Result 1470 states and 1906 transitions. [2024-11-08 18:49:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:49:42,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:49:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:42,302 INFO L225 Difference]: With dead ends: 1470 [2024-11-08 18:49:42,302 INFO L226 Difference]: Without dead ends: 909 [2024-11-08 18:49:42,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:49:42,302 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 120 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:42,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 456 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:49:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-11-08 18:49:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 872. [2024-11-08 18:49:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.272101033295063) internal successors, (1108), 871 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1108 transitions. [2024-11-08 18:49:42,315 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1108 transitions. Word has length 62 [2024-11-08 18:49:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:42,315 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1108 transitions. [2024-11-08 18:49:42,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1108 transitions. [2024-11-08 18:49:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:49:42,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:42,316 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:42,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-11-08 18:49:42,317 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:42,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash -450028415, now seen corresponding path program 1 times [2024-11-08 18:49:42,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:42,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905758765] [2024-11-08 18:49:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:43,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:43,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:43,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905758765] [2024-11-08 18:49:43,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905758765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:43,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:43,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 18:49:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936723954] [2024-11-08 18:49:43,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:43,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:49:43,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:49:43,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:49:43,080 INFO L87 Difference]: Start difference. First operand 872 states and 1108 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:43,308 INFO L93 Difference]: Finished difference Result 1383 states and 1830 transitions. [2024-11-08 18:49:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:49:43,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 18:49:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:43,309 INFO L225 Difference]: With dead ends: 1383 [2024-11-08 18:49:43,310 INFO L226 Difference]: Without dead ends: 1001 [2024-11-08 18:49:43,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:49:43,310 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 172 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:43,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 653 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:49:43,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-11-08 18:49:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 952. [2024-11-08 18:49:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.288117770767613) internal successors, (1225), 951 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1225 transitions. [2024-11-08 18:49:43,319 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1225 transitions. Word has length 63 [2024-11-08 18:49:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:43,319 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1225 transitions. [2024-11-08 18:49:43,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1225 transitions. [2024-11-08 18:49:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:49:43,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:43,320 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:43,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-11-08 18:49:43,320 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:43,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1314628083, now seen corresponding path program 1 times [2024-11-08 18:49:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:43,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397043108] [2024-11-08 18:49:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:43,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:43,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:43,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397043108] [2024-11-08 18:49:43,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397043108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:43,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:43,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 18:49:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670615245] [2024-11-08 18:49:43,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:43,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:49:43,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:49:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:43,948 INFO L87 Difference]: Start difference. First operand 952 states and 1225 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:44,049 INFO L93 Difference]: Finished difference Result 1455 states and 1924 transitions. [2024-11-08 18:49:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:49:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 18:49:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:44,050 INFO L225 Difference]: With dead ends: 1455 [2024-11-08 18:49:44,050 INFO L226 Difference]: Without dead ends: 976 [2024-11-08 18:49:44,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:44,051 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 44 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:44,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 784 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-11-08 18:49:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 975. [2024-11-08 18:49:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.2772073921971252) internal successors, (1244), 974 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1244 transitions. [2024-11-08 18:49:44,059 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1244 transitions. Word has length 63 [2024-11-08 18:49:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:44,059 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1244 transitions. [2024-11-08 18:49:44,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1244 transitions. [2024-11-08 18:49:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:49:44,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:44,060 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:44,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-11-08 18:49:44,061 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:44,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:44,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1504902781, now seen corresponding path program 1 times [2024-11-08 18:49:44,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:44,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231139305] [2024-11-08 18:49:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:44,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231139305] [2024-11-08 18:49:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231139305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:44,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:44,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-08 18:49:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115659319] [2024-11-08 18:49:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:44,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:49:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:49:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:49:44,613 INFO L87 Difference]: Start difference. First operand 975 states and 1244 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:44,750 INFO L93 Difference]: Finished difference Result 1480 states and 1952 transitions. [2024-11-08 18:49:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:49:44,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 18:49:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:44,751 INFO L225 Difference]: With dead ends: 1480 [2024-11-08 18:49:44,751 INFO L226 Difference]: Without dead ends: 1012 [2024-11-08 18:49:44,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:49:44,752 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 34 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:44,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1227 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-11-08 18:49:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 908. [2024-11-08 18:49:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 1.286659316427784) internal successors, (1167), 907 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1167 transitions. [2024-11-08 18:49:44,759 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1167 transitions. Word has length 63 [2024-11-08 18:49:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:44,759 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1167 transitions. [2024-11-08 18:49:44,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1167 transitions. [2024-11-08 18:49:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 18:49:44,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:44,760 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:44,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-11-08 18:49:44,761 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:44,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash 650388869, now seen corresponding path program 1 times [2024-11-08 18:49:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816851721] [2024-11-08 18:49:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816851721] [2024-11-08 18:49:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816851721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:45,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:45,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 18:49:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834236144] [2024-11-08 18:49:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:45,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:49:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:49:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:45,292 INFO L87 Difference]: Start difference. First operand 908 states and 1167 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:45,405 INFO L93 Difference]: Finished difference Result 1372 states and 1821 transitions. [2024-11-08 18:49:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:49:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-08 18:49:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:45,407 INFO L225 Difference]: With dead ends: 1372 [2024-11-08 18:49:45,407 INFO L226 Difference]: Without dead ends: 879 [2024-11-08 18:49:45,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:45,407 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 39 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:45,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1147 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-08 18:49:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 762. [2024-11-08 18:49:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 1.3232588699080157) internal successors, (1007), 761 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1007 transitions. [2024-11-08 18:49:45,413 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1007 transitions. Word has length 64 [2024-11-08 18:49:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:45,414 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 1007 transitions. [2024-11-08 18:49:45,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1007 transitions. [2024-11-08 18:49:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 18:49:45,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:45,414 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:45,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-11-08 18:49:45,415 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:45,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1660578070, now seen corresponding path program 1 times [2024-11-08 18:49:45,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:45,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656973315] [2024-11-08 18:49:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:45,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:45,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:45,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656973315] [2024-11-08 18:49:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656973315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:45,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:45,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 18:49:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75668793] [2024-11-08 18:49:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:45,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:49:45,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:45,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:49:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:45,883 INFO L87 Difference]: Start difference. First operand 762 states and 1007 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:46,007 INFO L93 Difference]: Finished difference Result 1291 states and 1735 transitions. [2024-11-08 18:49:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:49:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-08 18:49:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:46,008 INFO L225 Difference]: With dead ends: 1291 [2024-11-08 18:49:46,009 INFO L226 Difference]: Without dead ends: 836 [2024-11-08 18:49:46,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:46,009 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 30 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:46,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1601 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-08 18:49:46,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 780. [2024-11-08 18:49:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 1.3183568677792041) internal successors, (1027), 779 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1027 transitions. [2024-11-08 18:49:46,018 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1027 transitions. Word has length 64 [2024-11-08 18:49:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:46,019 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 1027 transitions. [2024-11-08 18:49:46,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1027 transitions. [2024-11-08 18:49:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 18:49:46,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:46,019 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:46,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-11-08 18:49:46,020 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:46,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:46,020 INFO L85 PathProgramCache]: Analyzing trace with hash -878302991, now seen corresponding path program 1 times [2024-11-08 18:49:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977162243] [2024-11-08 18:49:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:46,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977162243] [2024-11-08 18:49:46,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977162243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:46,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:46,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 18:49:46,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430917758] [2024-11-08 18:49:46,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:46,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:49:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:46,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:49:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:46,540 INFO L87 Difference]: Start difference. First operand 780 states and 1027 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:46,660 INFO L93 Difference]: Finished difference Result 1290 states and 1733 transitions. [2024-11-08 18:49:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:49:46,660 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-08 18:49:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:46,661 INFO L225 Difference]: With dead ends: 1290 [2024-11-08 18:49:46,661 INFO L226 Difference]: Without dead ends: 826 [2024-11-08 18:49:46,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:46,662 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 27 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:46,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1202 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-08 18:49:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 810. [2024-11-08 18:49:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 1.30778739184178) internal successors, (1058), 809 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1058 transitions. [2024-11-08 18:49:46,668 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1058 transitions. Word has length 64 [2024-11-08 18:49:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:46,668 INFO L471 AbstractCegarLoop]: Abstraction has 810 states and 1058 transitions. [2024-11-08 18:49:46,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1058 transitions. [2024-11-08 18:49:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:49:46,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:46,669 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:46,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-11-08 18:49:46,669 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:46,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1350186065, now seen corresponding path program 1 times [2024-11-08 18:49:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:46,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22476776] [2024-11-08 18:49:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:46,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:47,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:47,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22476776] [2024-11-08 18:49:47,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22476776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:47,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:47,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-08 18:49:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206676008] [2024-11-08 18:49:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:47,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:49:47,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:49:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:49:47,162 INFO L87 Difference]: Start difference. First operand 810 states and 1058 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:47,292 INFO L93 Difference]: Finished difference Result 1280 states and 1724 transitions. [2024-11-08 18:49:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:49:47,292 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-08 18:49:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:47,293 INFO L225 Difference]: With dead ends: 1280 [2024-11-08 18:49:47,293 INFO L226 Difference]: Without dead ends: 824 [2024-11-08 18:49:47,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:49:47,294 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 25 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:47,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1398 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-08 18:49:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 761. [2024-11-08 18:49:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.3157894736842106) internal successors, (1000), 760 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1000 transitions. [2024-11-08 18:49:47,301 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1000 transitions. Word has length 65 [2024-11-08 18:49:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:47,301 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1000 transitions. [2024-11-08 18:49:47,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1000 transitions. [2024-11-08 18:49:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:49:47,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:47,302 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:47,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-11-08 18:49:47,303 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:47,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash -567910986, now seen corresponding path program 1 times [2024-11-08 18:49:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263969899] [2024-11-08 18:49:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:47,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263969899] [2024-11-08 18:49:47,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263969899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:47,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:47,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 18:49:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297769922] [2024-11-08 18:49:47,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:47,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:49:47,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:49:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:47,805 INFO L87 Difference]: Start difference. First operand 761 states and 1000 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:47,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:47,907 INFO L93 Difference]: Finished difference Result 1227 states and 1658 transitions. [2024-11-08 18:49:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:49:47,907 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-08 18:49:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:47,908 INFO L225 Difference]: With dead ends: 1227 [2024-11-08 18:49:47,908 INFO L226 Difference]: Without dead ends: 761 [2024-11-08 18:49:47,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:47,909 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 22 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:47,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 979 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-08 18:49:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 716. [2024-11-08 18:49:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.323076923076923) internal successors, (946), 715 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 946 transitions. [2024-11-08 18:49:47,915 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 946 transitions. Word has length 65 [2024-11-08 18:49:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:47,916 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 946 transitions. [2024-11-08 18:49:47,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 946 transitions. [2024-11-08 18:49:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:49:47,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:47,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:47,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-11-08 18:49:47,917 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:47,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1389002311, now seen corresponding path program 1 times [2024-11-08 18:49:47,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:47,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699840285] [2024-11-08 18:49:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699840285] [2024-11-08 18:49:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699840285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 18:49:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624889766] [2024-11-08 18:49:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:48,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:49:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:49:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:48,681 INFO L87 Difference]: Start difference. First operand 716 states and 946 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:48,822 INFO L93 Difference]: Finished difference Result 1244 states and 1669 transitions. [2024-11-08 18:49:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:49:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-08 18:49:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:48,824 INFO L225 Difference]: With dead ends: 1244 [2024-11-08 18:49:48,824 INFO L226 Difference]: Without dead ends: 772 [2024-11-08 18:49:48,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:49:48,825 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 26 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:48,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1241 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-08 18:49:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 716. [2024-11-08 18:49:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.323076923076923) internal successors, (946), 715 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 946 transitions. [2024-11-08 18:49:48,831 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 946 transitions. Word has length 65 [2024-11-08 18:49:48,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:48,831 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 946 transitions. [2024-11-08 18:49:48,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 946 transitions. [2024-11-08 18:49:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 18:49:48,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:48,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:48,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-11-08 18:49:48,832 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:48,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1873747422, now seen corresponding path program 1 times [2024-11-08 18:49:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812525231] [2024-11-08 18:49:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:49:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812525231] [2024-11-08 18:49:49,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812525231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:49:49,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:49:49,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 18:49:49,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908257871] [2024-11-08 18:49:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:49:49,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:49:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:49:49,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:49,310 INFO L87 Difference]: Start difference. First operand 716 states and 946 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:49:49,400 INFO L93 Difference]: Finished difference Result 1171 states and 1591 transitions. [2024-11-08 18:49:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:49:49,401 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-08 18:49:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:49:49,401 INFO L225 Difference]: With dead ends: 1171 [2024-11-08 18:49:49,401 INFO L226 Difference]: Without dead ends: 687 [2024-11-08 18:49:49,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:49:49,402 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 21 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:49:49,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1080 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:49:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-08 18:49:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 539. [2024-11-08 18:49:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.3921933085501859) internal successors, (749), 538 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 749 transitions. [2024-11-08 18:49:49,408 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 749 transitions. Word has length 66 [2024-11-08 18:49:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:49:49,408 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 749 transitions. [2024-11-08 18:49:49,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:49:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 749 transitions. [2024-11-08 18:49:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 18:49:49,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:49:49,409 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:49:49,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-11-08 18:49:49,410 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:49:49,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:49:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1557272135, now seen corresponding path program 1 times [2024-11-08 18:49:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:49:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986759925] [2024-11-08 18:49:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:49:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:49:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:49:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986759925] [2024-11-08 18:49:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986759925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:49:50,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14735867] [2024-11-08 18:49:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:49:50,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:49:50,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:49:50,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:49:50,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:49:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:49:50,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-08 18:49:50,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:49:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:49:52,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:49:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 18:49:53,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14735867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:49:53,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:49:53,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 23] total 53 [2024-11-08 18:49:53,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046798391] [2024-11-08 18:49:53,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:49:53,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 18:49:53,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:49:53,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 18:49:53,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2583, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 18:49:53,980 INFO L87 Difference]: Start difference. First operand 539 states and 749 transitions. Second operand has 53 states, 53 states have (on average 4.283018867924528) internal successors, (227), 53 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:50:04,387 INFO L93 Difference]: Finished difference Result 1850 states and 2603 transitions. [2024-11-08 18:50:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-08 18:50:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.283018867924528) internal successors, (227), 53 states have internal predecessors, (227), 0 states have call successors, (0), 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 96 [2024-11-08 18:50:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:50:04,389 INFO L225 Difference]: With dead ends: 1850 [2024-11-08 18:50:04,389 INFO L226 Difference]: Without dead ends: 1395 [2024-11-08 18:50:04,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9124 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1975, Invalid=29177, Unknown=0, NotChecked=0, Total=31152 [2024-11-08 18:50:04,393 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1783 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:50:04,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 2507 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 18:50:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-08 18:50:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 943. [2024-11-08 18:50:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 1.4309978768577494) internal successors, (1348), 942 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1348 transitions. [2024-11-08 18:50:04,407 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1348 transitions. Word has length 96 [2024-11-08 18:50:04,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:50:04,407 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1348 transitions. [2024-11-08 18:50:04,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.283018867924528) internal successors, (227), 53 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:04,408 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1348 transitions. [2024-11-08 18:50:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 18:50:04,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:04,409 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:50:04,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:50:04,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-08 18:50:04,610 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:50:04,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:04,610 INFO L85 PathProgramCache]: Analyzing trace with hash 687816116, now seen corresponding path program 1 times [2024-11-08 18:50:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:04,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653175983] [2024-11-08 18:50:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:50:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653175983] [2024-11-08 18:50:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653175983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469620843] [2024-11-08 18:50:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:06,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:06,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:06,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:50:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:06,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 18:50:06,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:50:07,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:50:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469620843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:10,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:10,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 36 [2024-11-08 18:50:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312317223] [2024-11-08 18:50:10,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:10,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 18:50:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 18:50:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 18:50:10,930 INFO L87 Difference]: Start difference. First operand 943 states and 1348 transitions. Second operand has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:50:14,110 INFO L93 Difference]: Finished difference Result 2149 states and 3065 transitions. [2024-11-08 18:50:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 18:50:14,111 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 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 97 [2024-11-08 18:50:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:50:14,113 INFO L225 Difference]: With dead ends: 2149 [2024-11-08 18:50:14,113 INFO L226 Difference]: Without dead ends: 1288 [2024-11-08 18:50:14,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=462, Invalid=4094, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 18:50:14,115 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 710 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:50:14,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1864 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:50:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-11-08 18:50:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1023. [2024-11-08 18:50:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.4315068493150684) internal successors, (1463), 1022 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1463 transitions. [2024-11-08 18:50:14,127 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1463 transitions. Word has length 97 [2024-11-08 18:50:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:50:14,128 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1463 transitions. [2024-11-08 18:50:14,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1463 transitions. [2024-11-08 18:50:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 18:50:14,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:14,129 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:50:14,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:50:14,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:14,330 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:50:14,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash 971910354, now seen corresponding path program 1 times [2024-11-08 18:50:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365075831] [2024-11-08 18:50:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:14,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:50:15,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:15,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365075831] [2024-11-08 18:50:15,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365075831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:15,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391212735] [2024-11-08 18:50:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:15,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:15,609 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:15,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:50:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:16,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-08 18:50:16,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:50:17,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:50:19,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391212735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:19,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:19,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 21] total 51 [2024-11-08 18:50:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671037200] [2024-11-08 18:50:19,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:19,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 18:50:19,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 18:50:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2342, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 18:50:19,421 INFO L87 Difference]: Start difference. First operand 1023 states and 1463 transitions. Second operand has 51 states, 51 states have (on average 4.470588235294118) internal successors, (228), 51 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:50:26,299 INFO L93 Difference]: Finished difference Result 2930 states and 4168 transitions. [2024-11-08 18:50:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-08 18:50:26,300 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.470588235294118) internal successors, (228), 51 states have internal predecessors, (228), 0 states have call successors, (0), 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 98 [2024-11-08 18:50:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:50:26,302 INFO L225 Difference]: With dead ends: 2930 [2024-11-08 18:50:26,302 INFO L226 Difference]: Without dead ends: 1989 [2024-11-08 18:50:26,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3279 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1559, Invalid=12961, Unknown=0, NotChecked=0, Total=14520 [2024-11-08 18:50:26,304 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1547 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:50:26,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2798 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 18:50:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2024-11-08 18:50:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1364. [2024-11-08 18:50:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 1.4269992663242848) internal successors, (1945), 1363 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1945 transitions. [2024-11-08 18:50:26,326 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1945 transitions. Word has length 98 [2024-11-08 18:50:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:50:26,326 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 1945 transitions. [2024-11-08 18:50:26,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.470588235294118) internal successors, (228), 51 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1945 transitions. [2024-11-08 18:50:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 18:50:26,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:26,329 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:50:26,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:50:26,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:26,529 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:50:26,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1723701892, now seen corresponding path program 1 times [2024-11-08 18:50:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514090732] [2024-11-08 18:50:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:50:27,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514090732] [2024-11-08 18:50:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514090732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:27,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:27,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 18:50:27,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445577114] [2024-11-08 18:50:27,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:27,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:50:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:50:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:50:27,178 INFO L87 Difference]: Start difference. First operand 1364 states and 1945 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:50:27,267 INFO L93 Difference]: Finished difference Result 2761 states and 3939 transitions. [2024-11-08 18:50:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:50:27,267 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 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 98 [2024-11-08 18:50:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:50:27,269 INFO L225 Difference]: With dead ends: 2761 [2024-11-08 18:50:27,269 INFO L226 Difference]: Without dead ends: 1453 [2024-11-08 18:50:27,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:50:27,270 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 54 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:50:27,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 815 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:50:27,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2024-11-08 18:50:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1372. [2024-11-08 18:50:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 1.423778264040846) internal successors, (1952), 1371 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1952 transitions. [2024-11-08 18:50:27,281 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1952 transitions. Word has length 98 [2024-11-08 18:50:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:50:27,281 INFO L471 AbstractCegarLoop]: Abstraction has 1372 states and 1952 transitions. [2024-11-08 18:50:27,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1952 transitions. [2024-11-08 18:50:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 18:50:27,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:27,283 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:50:27,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-11-08 18:50:27,283 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:50:27,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1878219460, now seen corresponding path program 1 times [2024-11-08 18:50:27,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:27,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329745652] [2024-11-08 18:50:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:27,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:50:28,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329745652] [2024-11-08 18:50:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329745652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503240151] [2024-11-08 18:50:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:28,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:28,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:28,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:28,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:50:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:28,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-08 18:50:28,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:50:29,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 19 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503240151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:31,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:31,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 19] total 40 [2024-11-08 18:50:31,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670406190] [2024-11-08 18:50:31,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:31,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 18:50:31,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:31,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 18:50:31,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 18:50:31,015 INFO L87 Difference]: Start difference. First operand 1372 states and 1952 transitions. Second operand has 40 states, 40 states have (on average 5.825) internal successors, (233), 40 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:50:34,548 INFO L93 Difference]: Finished difference Result 3115 states and 4457 transitions. [2024-11-08 18:50:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 18:50:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.825) internal successors, (233), 40 states have internal predecessors, (233), 0 states have call successors, (0), 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 98 [2024-11-08 18:50:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:50:34,551 INFO L225 Difference]: With dead ends: 3115 [2024-11-08 18:50:34,551 INFO L226 Difference]: Without dead ends: 1825 [2024-11-08 18:50:34,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=664, Invalid=4886, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 18:50:34,552 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 635 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:50:34,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 2742 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:50:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-11-08 18:50:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1606. [2024-11-08 18:50:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.429283489096573) internal successors, (2294), 1605 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2294 transitions. [2024-11-08 18:50:34,568 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2294 transitions. Word has length 98 [2024-11-08 18:50:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:50:34,568 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2294 transitions. [2024-11-08 18:50:34,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.825) internal successors, (233), 40 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2294 transitions. [2024-11-08 18:50:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 18:50:34,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:34,570 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:50:34,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 18:50:34,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:34,771 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:50:34,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1015921153, now seen corresponding path program 1 times [2024-11-08 18:50:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:34,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947529801] [2024-11-08 18:50:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:50:37,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:37,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947529801] [2024-11-08 18:50:37,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947529801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:37,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602583895] [2024-11-08 18:50:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:37,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:37,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:37,745 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:37,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:50:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:38,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 18:50:38,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:50:39,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:50:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602583895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:40,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 11] total 43 [2024-11-08 18:50:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845992387] [2024-11-08 18:50:40,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:40,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 18:50:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 18:50:40,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 18:50:40,788 INFO L87 Difference]: Start difference. First operand 1606 states and 2294 transitions. Second operand has 43 states, 43 states have (on average 5.627906976744186) internal successors, (242), 43 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:50:45,898 INFO L93 Difference]: Finished difference Result 3782 states and 5332 transitions. [2024-11-08 18:50:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-08 18:50:45,898 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.627906976744186) internal successors, (242), 43 states have internal predecessors, (242), 0 states have call successors, (0), 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 [2024-11-08 18:50:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:50:45,900 INFO L225 Difference]: With dead ends: 3782 [2024-11-08 18:50:45,900 INFO L226 Difference]: Without dead ends: 2258 [2024-11-08 18:50:45,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2343 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1154, Invalid=9766, Unknown=0, NotChecked=0, Total=10920 [2024-11-08 18:50:45,902 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 1619 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:50:45,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2476 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:50:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2024-11-08 18:50:45,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1806. [2024-11-08 18:50:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.4310249307479224) internal successors, (2583), 1805 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2583 transitions. [2024-11-08 18:50:45,924 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2583 transitions. Word has length 99 [2024-11-08 18:50:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:50:45,924 INFO L471 AbstractCegarLoop]: Abstraction has 1806 states and 2583 transitions. [2024-11-08 18:50:45,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.627906976744186) internal successors, (242), 43 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2583 transitions. [2024-11-08 18:50:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 18:50:45,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:45,927 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:45,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:50:46,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-11-08 18:50:46,128 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:50:46,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1429883376, now seen corresponding path program 1 times [2024-11-08 18:50:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:46,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218036815] [2024-11-08 18:50:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:50:46,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218036815] [2024-11-08 18:50:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218036815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953565293] [2024-11-08 18:50:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:46,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:46,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:46,796 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:46,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:50:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:47,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-08 18:50:47,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:50:48,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:04,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953565293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:04,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:04,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 18] total 39 [2024-11-08 18:51:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314741861] [2024-11-08 18:51:04,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:04,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 18:51:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 18:51:04,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 18:51:04,754 INFO L87 Difference]: Start difference. First operand 1806 states and 2583 transitions. Second operand has 39 states, 39 states have (on average 6.0256410256410255) internal successors, (235), 39 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:51:10,982 INFO L93 Difference]: Finished difference Result 4366 states and 6272 transitions. [2024-11-08 18:51:10,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 18:51:10,983 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.0256410256410255) internal successors, (235), 39 states have internal predecessors, (235), 0 states have call successors, (0), 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 [2024-11-08 18:51:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:51:10,985 INFO L225 Difference]: With dead ends: 4366 [2024-11-08 18:51:10,985 INFO L226 Difference]: Without dead ends: 2620 [2024-11-08 18:51:10,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2523 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1285, Invalid=8615, Unknown=0, NotChecked=0, Total=9900 [2024-11-08 18:51:10,987 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1760 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:51:10,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 1870 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 18:51:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2024-11-08 18:51:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2295. [2024-11-08 18:51:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2294 states have (on average 1.445074106364429) internal successors, (3315), 2294 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3315 transitions. [2024-11-08 18:51:11,008 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3315 transitions. Word has length 99 [2024-11-08 18:51:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:51:11,008 INFO L471 AbstractCegarLoop]: Abstraction has 2295 states and 3315 transitions. [2024-11-08 18:51:11,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.0256410256410255) internal successors, (235), 39 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3315 transitions. [2024-11-08 18:51:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 18:51:11,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:51:11,014 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:51:11,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 18:51:11,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2024-11-08 18:51:11,215 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:51:11,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash 430798384, now seen corresponding path program 1 times [2024-11-08 18:51:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:11,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841456819] [2024-11-08 18:51:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:51:12,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841456819] [2024-11-08 18:51:12,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841456819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509910951] [2024-11-08 18:51:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:12,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:12,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:12,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:12,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:51:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:13,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-08 18:51:13,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:51:14,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:51:19,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509910951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:19,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:19,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 21] total 52 [2024-11-08 18:51:19,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924597022] [2024-11-08 18:51:19,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:19,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 18:51:19,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:19,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 18:51:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 18:51:19,520 INFO L87 Difference]: Start difference. First operand 2295 states and 3315 transitions. Second operand has 52 states, 52 states have (on average 4.6923076923076925) internal successors, (244), 52 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:51:31,922 INFO L93 Difference]: Finished difference Result 5472 states and 7810 transitions. [2024-11-08 18:51:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-08 18:51:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.6923076923076925) internal successors, (244), 52 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-08 18:51:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:51:31,926 INFO L225 Difference]: With dead ends: 5472 [2024-11-08 18:51:31,926 INFO L226 Difference]: Without dead ends: 3206 [2024-11-08 18:51:31,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5770 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1926, Invalid=19830, Unknown=0, NotChecked=0, Total=21756 [2024-11-08 18:51:31,931 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 1721 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:51:31,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 2857 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 18:51:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-11-08 18:51:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2426. [2024-11-08 18:51:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2425 states have (on average 1.4482474226804123) internal successors, (3512), 2425 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3512 transitions. [2024-11-08 18:51:31,973 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3512 transitions. Word has length 99 [2024-11-08 18:51:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:51:31,974 INFO L471 AbstractCegarLoop]: Abstraction has 2426 states and 3512 transitions. [2024-11-08 18:51:31,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.6923076923076925) internal successors, (244), 52 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3512 transitions. [2024-11-08 18:51:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 18:51:31,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:51:31,979 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:31,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 18:51:32,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:32,180 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:51:32,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1155649246, now seen corresponding path program 1 times [2024-11-08 18:51:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:32,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542097994] [2024-11-08 18:51:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:51:32,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542097994] [2024-11-08 18:51:32,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542097994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120061423] [2024-11-08 18:51:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:32,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:32,983 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:32,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 18:51:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:33,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-08 18:51:33,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:51:35,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:51:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120061423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:49,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:49,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 24] total 42 [2024-11-08 18:51:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106984052] [2024-11-08 18:51:49,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:49,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 18:51:49,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 18:51:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1460, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:51:49,169 INFO L87 Difference]: Start difference. First operand 2426 states and 3512 transitions. Second operand has 42 states, 42 states have (on average 5.523809523809524) internal successors, (232), 42 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:52:28,551 INFO L93 Difference]: Finished difference Result 5336 states and 7736 transitions. [2024-11-08 18:52:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-08 18:52:28,551 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.523809523809524) internal successors, (232), 42 states have internal predecessors, (232), 0 states have call successors, (0), 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 [2024-11-08 18:52:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:52:28,554 INFO L225 Difference]: With dead ends: 5336 [2024-11-08 18:52:28,554 INFO L226 Difference]: Without dead ends: 2988 [2024-11-08 18:52:28,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2243 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=1759, Invalid=8340, Unknown=1, NotChecked=0, Total=10100 [2024-11-08 18:52:28,557 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 777 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:52:28,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 1526 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-08 18:52:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2024-11-08 18:52:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2695. [2024-11-08 18:52:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2694 states have (on average 1.443207126948775) internal successors, (3888), 2694 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 3888 transitions. [2024-11-08 18:52:28,597 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 3888 transitions. Word has length 99 [2024-11-08 18:52:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:52:28,598 INFO L471 AbstractCegarLoop]: Abstraction has 2695 states and 3888 transitions. [2024-11-08 18:52:28,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.523809523809524) internal successors, (232), 42 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 3888 transitions. [2024-11-08 18:52:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 18:52:28,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:52:28,603 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-08 18:52:28,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 18:52:28,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:28,804 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:52:28,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:52:28,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1051940963, now seen corresponding path program 1 times [2024-11-08 18:52:28,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:52:28,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047194538] [2024-11-08 18:52:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:28,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:52:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:52:29,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:52:29,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047194538] [2024-11-08 18:52:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047194538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:52:29,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:52:29,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 18:52:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657486977] [2024-11-08 18:52:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:52:29,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:52:29,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:52:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:52:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:52:29,625 INFO L87 Difference]: Start difference. First operand 2695 states and 3888 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:52:30,011 INFO L93 Difference]: Finished difference Result 5557 states and 8022 transitions. [2024-11-08 18:52:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:52:30,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 18:52:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:52:30,014 INFO L225 Difference]: With dead ends: 5557 [2024-11-08 18:52:30,014 INFO L226 Difference]: Without dead ends: 2940 [2024-11-08 18:52:30,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:52:30,016 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 139 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:52:30,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 620 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:52:30,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2024-11-08 18:52:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2795. [2024-11-08 18:52:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 2794 states have (on average 1.4387974230493916) internal successors, (4020), 2794 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4020 transitions. [2024-11-08 18:52:30,042 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4020 transitions. Word has length 100 [2024-11-08 18:52:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:52:30,042 INFO L471 AbstractCegarLoop]: Abstraction has 2795 states and 4020 transitions. [2024-11-08 18:52:30,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4020 transitions. [2024-11-08 18:52:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 18:52:30,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:52:30,046 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:52:30,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-11-08 18:52:30,046 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:52:30,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:52:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash 706533454, now seen corresponding path program 1 times [2024-11-08 18:52:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:52:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551177740] [2024-11-08 18:52:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:52:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:52:31,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:52:31,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551177740] [2024-11-08 18:52:31,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551177740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:52:31,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297187469] [2024-11-08 18:52:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:31,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:52:31,871 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:52:31,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 18:52:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:32,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 18:52:32,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:52:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:52:33,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:52:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:52:35,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297187469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:52:35,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:52:35,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 40 [2024-11-08 18:52:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257113325] [2024-11-08 18:52:35,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:52:35,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 18:52:35,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:52:35,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 18:52:35,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 18:52:35,002 INFO L87 Difference]: Start difference. First operand 2795 states and 4020 transitions. Second operand has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:52:38,771 INFO L93 Difference]: Finished difference Result 5738 states and 8218 transitions. [2024-11-08 18:52:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 18:52:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 18:52:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:52:38,775 INFO L225 Difference]: With dead ends: 5738 [2024-11-08 18:52:38,775 INFO L226 Difference]: Without dead ends: 3021 [2024-11-08 18:52:38,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=761, Invalid=5245, Unknown=0, NotChecked=0, Total=6006 [2024-11-08 18:52:38,778 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 658 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:52:38,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 2648 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:52:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2024-11-08 18:52:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2799. [2024-11-08 18:52:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2798 states have (on average 1.4381701215153682) internal successors, (4024), 2798 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4024 transitions. [2024-11-08 18:52:38,808 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4024 transitions. Word has length 100 [2024-11-08 18:52:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:52:38,809 INFO L471 AbstractCegarLoop]: Abstraction has 2799 states and 4024 transitions. [2024-11-08 18:52:38,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4024 transitions. [2024-11-08 18:52:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 18:52:38,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:52:38,812 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-08 18:52:38,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 18:52:39,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-11-08 18:52:39,012 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:52:39,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:52:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash 806587307, now seen corresponding path program 1 times [2024-11-08 18:52:39,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:52:39,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359006152] [2024-11-08 18:52:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:52:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:52:42,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:52:42,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359006152] [2024-11-08 18:52:42,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359006152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:52:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36879651] [2024-11-08 18:52:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:42,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:42,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:52:42,109 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:52:42,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 18:52:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:43,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-08 18:52:43,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:52:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 18:52:47,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:52:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:52:57,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36879651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:52:57,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:52:57,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 24] total 64 [2024-11-08 18:52:57,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364300032] [2024-11-08 18:52:57,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:52:57,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-08 18:52:57,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:52:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-08 18:52:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=3780, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 18:52:57,988 INFO L87 Difference]: Start difference. First operand 2799 states and 4024 transitions. Second operand has 64 states, 64 states have (on average 4.3125) internal successors, (276), 64 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:53:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:53:18,598 INFO L93 Difference]: Finished difference Result 6334 states and 9012 transitions. [2024-11-08 18:53:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-08 18:53:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.3125) internal successors, (276), 64 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 18:53:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:53:18,601 INFO L225 Difference]: With dead ends: 6334 [2024-11-08 18:53:18,601 INFO L226 Difference]: Without dead ends: 3582 [2024-11-08 18:53:18,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4145 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=1653, Invalid=17253, Unknown=0, NotChecked=0, Total=18906 [2024-11-08 18:53:18,605 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 1550 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 4058 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:53:18,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 3181 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4058 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-08 18:53:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2024-11-08 18:53:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3081. [2024-11-08 18:53:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 3080 states have (on average 1.437987012987013) internal successors, (4429), 3080 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:53:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4429 transitions. [2024-11-08 18:53:18,642 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4429 transitions. Word has length 100 [2024-11-08 18:53:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:53:18,642 INFO L471 AbstractCegarLoop]: Abstraction has 3081 states and 4429 transitions. [2024-11-08 18:53:18,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.3125) internal successors, (276), 64 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:53:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4429 transitions. [2024-11-08 18:53:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 18:53:18,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:53:18,646 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-08 18:53:18,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 18:53:18,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:53:18,846 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:53:18,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:53:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1420384868, now seen corresponding path program 1 times [2024-11-08 18:53:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:53:18,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118223782] [2024-11-08 18:53:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:53:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:53:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:53:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:53:20,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:53:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118223782] [2024-11-08 18:53:20,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118223782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:53:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851568871] [2024-11-08 18:53:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:53:20,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:53:20,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:53:20,186 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:53:20,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 18:53:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:53:21,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-08 18:53:21,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:53:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:53:22,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:53:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:53:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851568871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:53:45,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:53:45,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 19] total 42 [2024-11-08 18:53:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099836428] [2024-11-08 18:53:45,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:53:45,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 18:53:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:53:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 18:53:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1505, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:53:45,557 INFO L87 Difference]: Start difference. First operand 3081 states and 4429 transitions. Second operand has 42 states, 42 states have (on average 5.523809523809524) internal successors, (232), 42 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:53:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:53:50,073 INFO L93 Difference]: Finished difference Result 6869 states and 9858 transitions. [2024-11-08 18:53:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 18:53:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.523809523809524) internal successors, (232), 42 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 18:53:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:53:50,077 INFO L225 Difference]: With dead ends: 6869 [2024-11-08 18:53:50,077 INFO L226 Difference]: Without dead ends: 3863 [2024-11-08 18:53:50,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=942, Invalid=5220, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 18:53:50,080 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 826 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:53:50,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 2122 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:53:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2024-11-08 18:53:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3462. [2024-11-08 18:53:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3461 states have (on average 1.4336896850621208) internal successors, (4962), 3461 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:53:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4962 transitions. [2024-11-08 18:53:50,130 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4962 transitions. Word has length 100 [2024-11-08 18:53:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:53:50,130 INFO L471 AbstractCegarLoop]: Abstraction has 3462 states and 4962 transitions. [2024-11-08 18:53:50,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.523809523809524) internal successors, (232), 42 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:53:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4962 transitions. [2024-11-08 18:53:50,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 18:53:50,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:53:50,135 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-08 18:53:50,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 18:53:50,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:53:50,335 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:53:50,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:53:50,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2081112534, now seen corresponding path program 1 times [2024-11-08 18:53:50,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:53:50,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092508815] [2024-11-08 18:53:50,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:53:50,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:53:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:53:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:53:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:53:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092508815] [2024-11-08 18:53:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092508815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:53:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768808924] [2024-11-08 18:53:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:53:51,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:53:51,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:53:51,232 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:53:51,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 18:53:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:53:51,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-08 18:53:51,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:53:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:53:53,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:53:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:53:57,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768808924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:53:57,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:53:57,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 22] total 44 [2024-11-08 18:53:57,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513843980] [2024-11-08 18:53:57,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:53:57,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 18:53:57,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:53:57,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 18:53:57,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1733, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 18:53:57,920 INFO L87 Difference]: Start difference. First operand 3462 states and 4962 transitions. Second operand has 44 states, 44 states have (on average 5.5) internal successors, (242), 44 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:04,240 INFO L93 Difference]: Finished difference Result 7661 states and 10907 transitions. [2024-11-08 18:54:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 18:54:04,240 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.5) internal successors, (242), 44 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 18:54:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:04,243 INFO L225 Difference]: With dead ends: 7661 [2024-11-08 18:54:04,243 INFO L226 Difference]: Without dead ends: 4234 [2024-11-08 18:54:04,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=712, Invalid=5930, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 18:54:04,247 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 976 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:04,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 2689 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 18:54:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2024-11-08 18:54:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 3634. [2024-11-08 18:54:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 1.4376548307184145) internal successors, (5223), 3633 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5223 transitions. [2024-11-08 18:54:04,284 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5223 transitions. Word has length 100 [2024-11-08 18:54:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:04,285 INFO L471 AbstractCegarLoop]: Abstraction has 3634 states and 5223 transitions. [2024-11-08 18:54:04,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.5) internal successors, (242), 44 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5223 transitions. [2024-11-08 18:54:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 18:54:04,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:04,288 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-08 18:54:04,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 18:54:04,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:04,489 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:04,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1364538069, now seen corresponding path program 1 times [2024-11-08 18:54:04,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:04,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145252696] [2024-11-08 18:54:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 18:54:04,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:04,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145252696] [2024-11-08 18:54:04,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145252696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:04,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:04,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:54:04,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056708475] [2024-11-08 18:54:04,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:04,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:54:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:54:04,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:54:04,754 INFO L87 Difference]: Start difference. First operand 3634 states and 5223 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:04,967 INFO L93 Difference]: Finished difference Result 7102 states and 10211 transitions. [2024-11-08 18:54:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:54:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 18:54:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:04,971 INFO L225 Difference]: With dead ends: 7102 [2024-11-08 18:54:04,971 INFO L226 Difference]: Without dead ends: 3532 [2024-11-08 18:54:04,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:54:04,974 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 85 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:04,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 367 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:54:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2024-11-08 18:54:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3520. [2024-11-08 18:54:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3519 states have (on average 1.4356351236146632) internal successors, (5052), 3519 states have internal predecessors, (5052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 5052 transitions. [2024-11-08 18:54:05,027 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 5052 transitions. Word has length 100 [2024-11-08 18:54:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:05,027 INFO L471 AbstractCegarLoop]: Abstraction has 3520 states and 5052 transitions. [2024-11-08 18:54:05,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 5052 transitions. [2024-11-08 18:54:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:54:05,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:05,032 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-08 18:54:05,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-11-08 18:54:05,033 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:05,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:05,033 INFO L85 PathProgramCache]: Analyzing trace with hash 765362907, now seen corresponding path program 1 times [2024-11-08 18:54:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:05,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173836223] [2024-11-08 18:54:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:05,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:05,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173836223] [2024-11-08 18:54:05,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173836223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202302160] [2024-11-08 18:54:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:05,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:05,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:05,854 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:05,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 18:54:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:06,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 18:54:06,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:07,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:09,849 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:54:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:14,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202302160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:54:14,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:54:14,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 23 [2024-11-08 18:54:14,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469687552] [2024-11-08 18:54:14,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:54:14,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:54:14,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:54:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:54:14,458 INFO L87 Difference]: Start difference. First operand 3520 states and 5052 transitions. Second operand has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:15,166 INFO L93 Difference]: Finished difference Result 7278 states and 10444 transitions. [2024-11-08 18:54:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 18:54:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:54:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:15,169 INFO L225 Difference]: With dead ends: 7278 [2024-11-08 18:54:15,169 INFO L226 Difference]: Without dead ends: 3752 [2024-11-08 18:54:15,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-11-08 18:54:15,172 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 463 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:15,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1577 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:54:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2024-11-08 18:54:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3393. [2024-11-08 18:54:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3392 states have (on average 1.4295400943396226) internal successors, (4849), 3392 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4849 transitions. [2024-11-08 18:54:15,205 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4849 transitions. Word has length 101 [2024-11-08 18:54:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:15,205 INFO L471 AbstractCegarLoop]: Abstraction has 3393 states and 4849 transitions. [2024-11-08 18:54:15,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4849 transitions. [2024-11-08 18:54:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:54:15,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:15,208 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-08 18:54:15,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 18:54:15,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2024-11-08 18:54:15,409 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:15,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash 414195490, now seen corresponding path program 1 times [2024-11-08 18:54:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405686968] [2024-11-08 18:54:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 18:54:16,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405686968] [2024-11-08 18:54:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405686968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137600275] [2024-11-08 18:54:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:16,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:16,157 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:16,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 18:54:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:16,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-08 18:54:16,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:18,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:19,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137600275] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:19,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:54:19,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9, 12] total 32 [2024-11-08 18:54:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299289638] [2024-11-08 18:54:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:19,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:54:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:54:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:54:19,267 INFO L87 Difference]: Start difference. First operand 3393 states and 4849 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:20,674 INFO L93 Difference]: Finished difference Result 10210 states and 14588 transitions. [2024-11-08 18:54:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:54:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:54:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:20,680 INFO L225 Difference]: With dead ends: 10210 [2024-11-08 18:54:20,680 INFO L226 Difference]: Without dead ends: 6892 [2024-11-08 18:54:20,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=234, Invalid=1658, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 18:54:20,684 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 544 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:20,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1775 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:54:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6892 states. [2024-11-08 18:54:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6892 to 6793. [2024-11-08 18:54:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6793 states, 6792 states have (on average 1.431095406360424) internal successors, (9720), 6792 states have internal predecessors, (9720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6793 states to 6793 states and 9720 transitions. [2024-11-08 18:54:20,766 INFO L78 Accepts]: Start accepts. Automaton has 6793 states and 9720 transitions. Word has length 101 [2024-11-08 18:54:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:20,766 INFO L471 AbstractCegarLoop]: Abstraction has 6793 states and 9720 transitions. [2024-11-08 18:54:20,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states and 9720 transitions. [2024-11-08 18:54:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:54:20,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:20,770 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-08 18:54:20,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 18:54:20,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:20,971 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:20,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1196470569, now seen corresponding path program 1 times [2024-11-08 18:54:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640921344] [2024-11-08 18:54:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640921344] [2024-11-08 18:54:21,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640921344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591509254] [2024-11-08 18:54:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:21,462 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:21,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 18:54:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:22,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 18:54:22,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:23,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:27,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591509254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:54:27,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:54:27,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 18] total 35 [2024-11-08 18:54:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858469936] [2024-11-08 18:54:27,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:54:27,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:54:27,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:54:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:54:27,336 INFO L87 Difference]: Start difference. First operand 6793 states and 9720 transitions. Second operand has 35 states, 35 states have (on average 7.142857142857143) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:29,337 INFO L93 Difference]: Finished difference Result 10283 states and 14695 transitions. [2024-11-08 18:54:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:54:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.142857142857143) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:54:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:29,340 INFO L225 Difference]: With dead ends: 10283 [2024-11-08 18:54:29,340 INFO L226 Difference]: Without dead ends: 3561 [2024-11-08 18:54:29,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 18:54:29,345 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 324 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:29,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1980 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:54:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2024-11-08 18:54:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3490. [2024-11-08 18:54:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.4284895385497278) internal successors, (4984), 3489 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 4984 transitions. [2024-11-08 18:54:29,379 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 4984 transitions. Word has length 101 [2024-11-08 18:54:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:29,379 INFO L471 AbstractCegarLoop]: Abstraction has 3490 states and 4984 transitions. [2024-11-08 18:54:29,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.142857142857143) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:29,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 4984 transitions. [2024-11-08 18:54:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:54:29,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:29,382 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-08 18:54:29,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 18:54:29,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2024-11-08 18:54:29,583 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:29,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2063755386, now seen corresponding path program 1 times [2024-11-08 18:54:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917473341] [2024-11-08 18:54:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:30,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:30,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917473341] [2024-11-08 18:54:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917473341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:30,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:30,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-08 18:54:30,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899241380] [2024-11-08 18:54:30,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:30,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:54:30,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:54:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:54:30,424 INFO L87 Difference]: Start difference. First operand 3490 states and 4984 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:30,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:30,848 INFO L93 Difference]: Finished difference Result 7015 states and 10004 transitions. [2024-11-08 18:54:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:54:30,849 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:54:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:30,854 INFO L225 Difference]: With dead ends: 7015 [2024-11-08 18:54:30,854 INFO L226 Difference]: Without dead ends: 3600 [2024-11-08 18:54:30,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:54:30,858 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 188 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:30,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 904 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:54:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2024-11-08 18:54:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3488. [2024-11-08 18:54:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 3487 states have (on average 1.4287353025523373) internal successors, (4982), 3487 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4982 transitions. [2024-11-08 18:54:30,918 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4982 transitions. Word has length 101 [2024-11-08 18:54:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:30,919 INFO L471 AbstractCegarLoop]: Abstraction has 3488 states and 4982 transitions. [2024-11-08 18:54:30,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4982 transitions. [2024-11-08 18:54:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:54:30,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:30,923 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:54:30,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-11-08 18:54:30,924 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:30,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1208497552, now seen corresponding path program 1 times [2024-11-08 18:54:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:30,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935331292] [2024-11-08 18:54:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 18:54:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935331292] [2024-11-08 18:54:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935331292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:31,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:54:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847039312] [2024-11-08 18:54:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:31,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:54:31,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:54:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:54:31,684 INFO L87 Difference]: Start difference. First operand 3488 states and 4982 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:31,865 INFO L93 Difference]: Finished difference Result 6725 states and 9628 transitions. [2024-11-08 18:54:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:54:31,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:54:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:31,868 INFO L225 Difference]: With dead ends: 6725 [2024-11-08 18:54:31,868 INFO L226 Difference]: Without dead ends: 3297 [2024-11-08 18:54:31,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:54:31,870 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 8 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:31,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 505 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:54:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2024-11-08 18:54:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 3286. [2024-11-08 18:54:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3285 states have (on average 1.4337899543378996) internal successors, (4710), 3285 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4710 transitions. [2024-11-08 18:54:31,921 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4710 transitions. Word has length 101 [2024-11-08 18:54:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:31,922 INFO L471 AbstractCegarLoop]: Abstraction has 3286 states and 4710 transitions. [2024-11-08 18:54:31,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4710 transitions. [2024-11-08 18:54:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:54:31,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:31,925 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-08 18:54:31,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-11-08 18:54:31,925 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:31,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 218834625, now seen corresponding path program 1 times [2024-11-08 18:54:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465241220] [2024-11-08 18:54:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:31,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:54:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:32,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465241220] [2024-11-08 18:54:32,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465241220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:32,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:32,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 18:54:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324190568] [2024-11-08 18:54:32,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:32,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:54:32,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:54:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:54:32,589 INFO L87 Difference]: Start difference. First operand 3286 states and 4710 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:32,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:32,900 INFO L93 Difference]: Finished difference Result 6634 states and 9496 transitions. [2024-11-08 18:54:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:54:32,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:54:32,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:32,904 INFO L225 Difference]: With dead ends: 6634 [2024-11-08 18:54:32,904 INFO L226 Difference]: Without dead ends: 3421 [2024-11-08 18:54:32,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:54:32,906 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 147 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:32,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 616 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:54:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2024-11-08 18:54:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3310. [2024-11-08 18:54:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 3309 states have (on average 1.4306436990027198) internal successors, (4734), 3309 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4734 transitions. [2024-11-08 18:54:32,937 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4734 transitions. Word has length 101 [2024-11-08 18:54:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:32,938 INFO L471 AbstractCegarLoop]: Abstraction has 3310 states and 4734 transitions. [2024-11-08 18:54:32,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4734 transitions. [2024-11-08 18:54:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:54:32,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:32,941 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-08 18:54:32,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-11-08 18:54:32,942 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:32,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1769111277, now seen corresponding path program 1 times [2024-11-08 18:54:32,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:32,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526068391] [2024-11-08 18:54:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:54:34,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:34,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526068391] [2024-11-08 18:54:34,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526068391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516960987] [2024-11-08 18:54:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:34,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:34,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:34,798 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:34,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 18:54:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:35,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-08 18:54:35,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:54:37,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:54:53,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516960987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:54:53,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:54:53,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 28] total 63 [2024-11-08 18:54:53,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672051018] [2024-11-08 18:54:53,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:54:53,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 18:54:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:53,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 18:54:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3607, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 18:54:53,091 INFO L87 Difference]: Start difference. First operand 3310 states and 4734 transitions. Second operand has 63 states, 63 states have (on average 4.158730158730159) internal successors, (262), 63 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:03,976 INFO L93 Difference]: Finished difference Result 7338 states and 10440 transitions. [2024-11-08 18:55:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-08 18:55:03,977 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.158730158730159) internal successors, (262), 63 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:55:03,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:03,979 INFO L225 Difference]: With dead ends: 7338 [2024-11-08 18:55:03,979 INFO L226 Difference]: Without dead ends: 4072 [2024-11-08 18:55:03,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2673 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1334, Invalid=11098, Unknown=0, NotChecked=0, Total=12432 [2024-11-08 18:55:03,982 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 877 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 4417 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3811 SdHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:03,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 3811 Invalid, 4448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4417 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-08 18:55:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2024-11-08 18:55:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 3561. [2024-11-08 18:55:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.4325842696629214) internal successors, (5100), 3560 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5100 transitions. [2024-11-08 18:55:04,024 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5100 transitions. Word has length 101 [2024-11-08 18:55:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:04,025 INFO L471 AbstractCegarLoop]: Abstraction has 3561 states and 5100 transitions. [2024-11-08 18:55:04,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.158730158730159) internal successors, (262), 63 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5100 transitions. [2024-11-08 18:55:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:55:04,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:04,029 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 18:55:04,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 18:55:04,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-11-08 18:55:04,230 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:04,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:04,230 INFO L85 PathProgramCache]: Analyzing trace with hash 280140204, now seen corresponding path program 1 times [2024-11-08 18:55:04,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:04,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799071183] [2024-11-08 18:55:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:04,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:55:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799071183] [2024-11-08 18:55:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799071183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817895730] [2024-11-08 18:55:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:05,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:05,048 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:05,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 18:55:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:05,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 18:55:05,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:55:06,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:55:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817895730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:06,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:55:06,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-08 18:55:06,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938856597] [2024-11-08 18:55:06,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:06,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:55:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:06,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:55:06,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:55:06,253 INFO L87 Difference]: Start difference. First operand 3561 states and 5100 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:06,456 INFO L93 Difference]: Finished difference Result 7065 states and 10118 transitions. [2024-11-08 18:55:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:55:06,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:55:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:06,458 INFO L225 Difference]: With dead ends: 7065 [2024-11-08 18:55:06,458 INFO L226 Difference]: Without dead ends: 3573 [2024-11-08 18:55:06,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:55:06,460 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 86 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:06,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 366 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:55:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2024-11-08 18:55:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3528. [2024-11-08 18:55:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 1.4326623192514885) internal successors, (5053), 3527 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 5053 transitions. [2024-11-08 18:55:06,484 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 5053 transitions. Word has length 101 [2024-11-08 18:55:06,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:06,484 INFO L471 AbstractCegarLoop]: Abstraction has 3528 states and 5053 transitions. [2024-11-08 18:55:06,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 5053 transitions. [2024-11-08 18:55:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:55:06,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:06,487 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:06,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:06,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-11-08 18:55:06,688 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:06,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2120893528, now seen corresponding path program 1 times [2024-11-08 18:55:06,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:06,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532829047] [2024-11-08 18:55:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:06,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 18:55:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:07,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532829047] [2024-11-08 18:55:07,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532829047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:07,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:07,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:55:07,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288391026] [2024-11-08 18:55:07,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:07,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:55:07,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:07,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:55:07,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:55:07,056 INFO L87 Difference]: Start difference. First operand 3528 states and 5053 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:07,208 INFO L93 Difference]: Finished difference Result 6563 states and 9396 transitions. [2024-11-08 18:55:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:55:07,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 18:55:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:07,211 INFO L225 Difference]: With dead ends: 6563 [2024-11-08 18:55:07,211 INFO L226 Difference]: Without dead ends: 3083 [2024-11-08 18:55:07,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:55:07,212 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 17 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:07,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 417 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:55:07,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2024-11-08 18:55:07,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3072. [2024-11-08 18:55:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.4304786714425268) internal successors, (4393), 3071 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4393 transitions. [2024-11-08 18:55:07,233 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4393 transitions. Word has length 101 [2024-11-08 18:55:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:07,233 INFO L471 AbstractCegarLoop]: Abstraction has 3072 states and 4393 transitions. [2024-11-08 18:55:07,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4393 transitions. [2024-11-08 18:55:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 18:55:07,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:07,237 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:07,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-11-08 18:55:07,237 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:07,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:07,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2005070883, now seen corresponding path program 1 times [2024-11-08 18:55:07,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354805292] [2024-11-08 18:55:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:55:08,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:08,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354805292] [2024-11-08 18:55:08,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354805292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:08,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361009829] [2024-11-08 18:55:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:08,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:08,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:08,009 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:08,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 18:55:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:08,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 18:55:08,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:55:09,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:55:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361009829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:09,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2024-11-08 18:55:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181106397] [2024-11-08 18:55:09,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:09,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 18:55:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 18:55:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:55:09,661 INFO L87 Difference]: Start difference. First operand 3072 states and 4393 transitions. Second operand has 27 states, 27 states have (on average 8.518518518518519) internal successors, (230), 27 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:10,874 INFO L93 Difference]: Finished difference Result 6356 states and 9081 transitions. [2024-11-08 18:55:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:55:10,874 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.518518518518519) internal successors, (230), 27 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-08 18:55:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:10,876 INFO L225 Difference]: With dead ends: 6356 [2024-11-08 18:55:10,876 INFO L226 Difference]: Without dead ends: 3345 [2024-11-08 18:55:10,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=1820, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 18:55:10,878 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 462 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:10,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1726 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:55:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2024-11-08 18:55:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3194. [2024-11-08 18:55:10,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3193 states have (on average 1.4256185405574695) internal successors, (4552), 3193 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4552 transitions. [2024-11-08 18:55:10,901 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4552 transitions. Word has length 102 [2024-11-08 18:55:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:10,901 INFO L471 AbstractCegarLoop]: Abstraction has 3194 states and 4552 transitions. [2024-11-08 18:55:10,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.518518518518519) internal successors, (230), 27 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4552 transitions. [2024-11-08 18:55:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 18:55:10,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:10,903 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:10,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:11,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-11-08 18:55:11,104 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:11,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1347020699, now seen corresponding path program 1 times [2024-11-08 18:55:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265530393] [2024-11-08 18:55:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:12,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:12,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265530393] [2024-11-08 18:55:12,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265530393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:12,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456870553] [2024-11-08 18:55:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:12,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:12,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:12,477 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:12,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 18:55:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:13,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 18:55:13,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:14,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456870553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:16,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 48 [2024-11-08 18:55:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216149256] [2024-11-08 18:55:16,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:16,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 18:55:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 18:55:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2012, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 18:55:16,696 INFO L87 Difference]: Start difference. First operand 3194 states and 4552 transitions. Second operand has 48 states, 48 states have (on average 5.1875) internal successors, (249), 48 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:18,080 INFO L93 Difference]: Finished difference Result 6676 states and 9478 transitions. [2024-11-08 18:55:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:55:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.1875) internal successors, (249), 48 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-08 18:55:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:18,083 INFO L225 Difference]: With dead ends: 6676 [2024-11-08 18:55:18,083 INFO L226 Difference]: Without dead ends: 3493 [2024-11-08 18:55:18,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=408, Invalid=3252, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 18:55:18,084 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 577 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:18,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 2440 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:55:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2024-11-08 18:55:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3318. [2024-11-08 18:55:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 3317 states have (on average 1.4199577931866143) internal successors, (4710), 3317 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4710 transitions. [2024-11-08 18:55:18,107 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4710 transitions. Word has length 102 [2024-11-08 18:55:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:18,107 INFO L471 AbstractCegarLoop]: Abstraction has 3318 states and 4710 transitions. [2024-11-08 18:55:18,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.1875) internal successors, (249), 48 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4710 transitions. [2024-11-08 18:55:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 18:55:18,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:18,110 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:18,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:18,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2024-11-08 18:55:18,311 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:18,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2042893481, now seen corresponding path program 1 times [2024-11-08 18:55:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309905167] [2024-11-08 18:55:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:18,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:20,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:20,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309905167] [2024-11-08 18:55:20,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309905167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:20,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377391090] [2024-11-08 18:55:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:20,592 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:20,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 18:55:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:21,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:55:21,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:55:21,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 18:55:22,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377391090] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:22,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:55:22,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [20, 8] total 30 [2024-11-08 18:55:22,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352814757] [2024-11-08 18:55:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:22,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:55:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:55:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2024-11-08 18:55:22,106 INFO L87 Difference]: Start difference. First operand 3318 states and 4710 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:22,204 INFO L93 Difference]: Finished difference Result 6474 states and 9204 transitions. [2024-11-08 18:55:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:55:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-08 18:55:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:22,207 INFO L225 Difference]: With dead ends: 6474 [2024-11-08 18:55:22,207 INFO L226 Difference]: Without dead ends: 3213 [2024-11-08 18:55:22,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2024-11-08 18:55:22,209 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 3 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:22,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 299 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:55:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2024-11-08 18:55:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3211. [2024-11-08 18:55:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 3210 states have (on average 1.421183800623053) internal successors, (4562), 3210 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4562 transitions. [2024-11-08 18:55:22,243 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4562 transitions. Word has length 102 [2024-11-08 18:55:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:22,243 INFO L471 AbstractCegarLoop]: Abstraction has 3211 states and 4562 transitions. [2024-11-08 18:55:22,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4562 transitions. [2024-11-08 18:55:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 18:55:22,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:22,245 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:22,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-08 18:55:22,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2024-11-08 18:55:22,446 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:22,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash 708674777, now seen corresponding path program 1 times [2024-11-08 18:55:22,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34085282] [2024-11-08 18:55:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:22,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:23,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:23,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34085282] [2024-11-08 18:55:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34085282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:23,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891226469] [2024-11-08 18:55:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:23,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:23,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:23,067 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:23,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 18:55:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:23,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 18:55:23,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:24,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:55:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891226469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:24,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:55:24,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-08 18:55:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505231748] [2024-11-08 18:55:24,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:24,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:55:24,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:55:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:55:24,598 INFO L87 Difference]: Start difference. First operand 3211 states and 4562 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:24,843 INFO L93 Difference]: Finished difference Result 6780 states and 9625 transitions. [2024-11-08 18:55:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:55:24,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-08 18:55:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:24,846 INFO L225 Difference]: With dead ends: 6780 [2024-11-08 18:55:24,846 INFO L226 Difference]: Without dead ends: 3632 [2024-11-08 18:55:24,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:55:24,848 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 116 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:24,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 671 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:55:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2024-11-08 18:55:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3481. [2024-11-08 18:55:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 3480 states have (on average 1.424712643678161) internal successors, (4958), 3480 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 4958 transitions. [2024-11-08 18:55:24,877 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 4958 transitions. Word has length 102 [2024-11-08 18:55:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:24,878 INFO L471 AbstractCegarLoop]: Abstraction has 3481 states and 4958 transitions. [2024-11-08 18:55:24,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:24,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 4958 transitions. [2024-11-08 18:55:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 18:55:24,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:24,880 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:24,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:25,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2024-11-08 18:55:25,081 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:25,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1112989041, now seen corresponding path program 1 times [2024-11-08 18:55:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096693928] [2024-11-08 18:55:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:55:26,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:26,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096693928] [2024-11-08 18:55:26,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096693928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:26,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:26,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-08 18:55:26,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408792060] [2024-11-08 18:55:26,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:26,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:55:26,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:26,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:55:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:55:26,332 INFO L87 Difference]: Start difference. First operand 3481 states and 4958 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:26,987 INFO L93 Difference]: Finished difference Result 7171 states and 10168 transitions. [2024-11-08 18:55:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:55:26,987 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-08 18:55:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:26,990 INFO L225 Difference]: With dead ends: 7171 [2024-11-08 18:55:26,990 INFO L226 Difference]: Without dead ends: 3753 [2024-11-08 18:55:26,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:55:26,991 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 222 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:26,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1727 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:55:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2024-11-08 18:55:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3500. [2024-11-08 18:55:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 3499 states have (on average 1.4244069734209774) internal successors, (4984), 3499 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 4984 transitions. [2024-11-08 18:55:27,016 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 4984 transitions. Word has length 102 [2024-11-08 18:55:27,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:27,017 INFO L471 AbstractCegarLoop]: Abstraction has 3500 states and 4984 transitions. [2024-11-08 18:55:27,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 4984 transitions. [2024-11-08 18:55:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:27,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:27,020 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:27,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-11-08 18:55:27,020 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:27,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1250761565, now seen corresponding path program 1 times [2024-11-08 18:55:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607000092] [2024-11-08 18:55:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:27,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:28,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607000092] [2024-11-08 18:55:28,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607000092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671093005] [2024-11-08 18:55:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:28,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:28,565 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:28,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 18:55:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:29,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-08 18:55:29,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:30,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:36,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671093005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:36,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:36,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 25] total 61 [2024-11-08 18:55:36,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951372857] [2024-11-08 18:55:36,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:36,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-08 18:55:36,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-08 18:55:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3415, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 18:55:36,198 INFO L87 Difference]: Start difference. First operand 3500 states and 4984 transitions. Second operand has 61 states, 61 states have (on average 4.311475409836065) internal successors, (263), 61 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:40,985 INFO L93 Difference]: Finished difference Result 7271 states and 10310 transitions. [2024-11-08 18:55:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 18:55:40,986 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.311475409836065) internal successors, (263), 61 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:40,988 INFO L225 Difference]: With dead ends: 7271 [2024-11-08 18:55:40,988 INFO L226 Difference]: Without dead ends: 3823 [2024-11-08 18:55:40,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=817, Invalid=8113, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 18:55:40,991 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 676 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 3374 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 4443 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:40,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 4443 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3374 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 18:55:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2024-11-08 18:55:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3592. [2024-11-08 18:55:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3591 states have (on average 1.4218880534670009) internal successors, (5106), 3591 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5106 transitions. [2024-11-08 18:55:41,028 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5106 transitions. Word has length 103 [2024-11-08 18:55:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:41,029 INFO L471 AbstractCegarLoop]: Abstraction has 3592 states and 5106 transitions. [2024-11-08 18:55:41,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.311475409836065) internal successors, (263), 61 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5106 transitions. [2024-11-08 18:55:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:41,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:41,031 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:41,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:41,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:41,232 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:41,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash -537633590, now seen corresponding path program 1 times [2024-11-08 18:55:41,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:41,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334353533] [2024-11-08 18:55:41,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:41,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 18:55:41,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334353533] [2024-11-08 18:55:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334353533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:41,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:41,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:55:41,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605091957] [2024-11-08 18:55:41,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:41,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:55:41,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:55:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:55:41,403 INFO L87 Difference]: Start difference. First operand 3592 states and 5106 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:41,451 INFO L93 Difference]: Finished difference Result 7174 states and 10205 transitions. [2024-11-08 18:55:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:55:41,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:41,454 INFO L225 Difference]: With dead ends: 7174 [2024-11-08 18:55:41,454 INFO L226 Difference]: Without dead ends: 3645 [2024-11-08 18:55:41,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:55:41,456 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 2 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:41,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 480 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2024-11-08 18:55:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3631. [2024-11-08 18:55:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3630 states have (on average 1.4209366391184572) internal successors, (5158), 3630 states have internal predecessors, (5158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 5158 transitions. [2024-11-08 18:55:41,482 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 5158 transitions. Word has length 103 [2024-11-08 18:55:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:41,482 INFO L471 AbstractCegarLoop]: Abstraction has 3631 states and 5158 transitions. [2024-11-08 18:55:41,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 5158 transitions. [2024-11-08 18:55:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:41,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:41,484 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:41,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-11-08 18:55:41,485 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:41,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:41,485 INFO L85 PathProgramCache]: Analyzing trace with hash -576486945, now seen corresponding path program 1 times [2024-11-08 18:55:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:41,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670422848] [2024-11-08 18:55:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:55:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670422848] [2024-11-08 18:55:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670422848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:42,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 18:55:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006299639] [2024-11-08 18:55:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:42,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:55:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:55:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:55:42,263 INFO L87 Difference]: Start difference. First operand 3631 states and 5158 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:42,409 INFO L93 Difference]: Finished difference Result 7292 states and 10362 transitions. [2024-11-08 18:55:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:55:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:42,412 INFO L225 Difference]: With dead ends: 7292 [2024-11-08 18:55:42,412 INFO L226 Difference]: Without dead ends: 3717 [2024-11-08 18:55:42,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:55:42,413 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 26 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:42,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 816 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:55:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2024-11-08 18:55:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 3670. [2024-11-08 18:55:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 1.4172799127827747) internal successors, (5200), 3669 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 5200 transitions. [2024-11-08 18:55:42,438 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 5200 transitions. Word has length 103 [2024-11-08 18:55:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:42,439 INFO L471 AbstractCegarLoop]: Abstraction has 3670 states and 5200 transitions. [2024-11-08 18:55:42,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 5200 transitions. [2024-11-08 18:55:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:42,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:42,441 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:42,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-11-08 18:55:42,441 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:42,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1536049510, now seen corresponding path program 1 times [2024-11-08 18:55:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:42,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141909330] [2024-11-08 18:55:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:42,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:55:43,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141909330] [2024-11-08 18:55:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141909330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147512882] [2024-11-08 18:55:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:43,674 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:43,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 18:55:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:44,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 18:55:44,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:55:45,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:55:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147512882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:47,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:47,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 38 [2024-11-08 18:55:47,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029097240] [2024-11-08 18:55:47,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:47,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 18:55:47,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:47,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 18:55:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 18:55:47,828 INFO L87 Difference]: Start difference. First operand 3670 states and 5200 transitions. Second operand has 38 states, 38 states have (on average 6.394736842105263) internal successors, (243), 38 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:49,805 INFO L93 Difference]: Finished difference Result 7643 states and 10773 transitions. [2024-11-08 18:55:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 18:55:49,806 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.394736842105263) internal successors, (243), 38 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:49,808 INFO L225 Difference]: With dead ends: 7643 [2024-11-08 18:55:49,808 INFO L226 Difference]: Without dead ends: 4036 [2024-11-08 18:55:49,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=413, Invalid=3493, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 18:55:49,810 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 841 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:49,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2739 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:55:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2024-11-08 18:55:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 3727. [2024-11-08 18:55:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 3726 states have (on average 1.4143853998926463) internal successors, (5270), 3726 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5270 transitions. [2024-11-08 18:55:49,837 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5270 transitions. Word has length 103 [2024-11-08 18:55:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:49,837 INFO L471 AbstractCegarLoop]: Abstraction has 3727 states and 5270 transitions. [2024-11-08 18:55:49,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.394736842105263) internal successors, (243), 38 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5270 transitions. [2024-11-08 18:55:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:49,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:49,839 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:49,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:50,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2024-11-08 18:55:50,040 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:50,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:50,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1446055542, now seen corresponding path program 1 times [2024-11-08 18:55:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880551102] [2024-11-08 18:55:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:50,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:55:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880551102] [2024-11-08 18:55:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880551102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505967161] [2024-11-08 18:55:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:50,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:50,637 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:50,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 18:55:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:51,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 18:55:51,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:55:52,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 18:55:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505967161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:54,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:54,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 16] total 33 [2024-11-08 18:55:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515820450] [2024-11-08 18:55:54,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:54,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 18:55:54,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:54,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 18:55:54,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:55:54,011 INFO L87 Difference]: Start difference. First operand 3727 states and 5270 transitions. Second operand has 33 states, 33 states have (on average 7.2727272727272725) internal successors, (240), 33 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:56,043 INFO L93 Difference]: Finished difference Result 7506 states and 10603 transitions. [2024-11-08 18:55:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 18:55:56,043 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.2727272727272725) internal successors, (240), 33 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:56,045 INFO L225 Difference]: With dead ends: 7506 [2024-11-08 18:55:56,046 INFO L226 Difference]: Without dead ends: 3842 [2024-11-08 18:55:56,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=347, Invalid=2623, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 18:55:56,048 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 255 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:56,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1825 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 18:55:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2024-11-08 18:55:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3726. [2024-11-08 18:55:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3726 states, 3725 states have (on average 1.410201342281879) internal successors, (5253), 3725 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 5253 transitions. [2024-11-08 18:55:56,078 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 5253 transitions. Word has length 103 [2024-11-08 18:55:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:56,078 INFO L471 AbstractCegarLoop]: Abstraction has 3726 states and 5253 transitions. [2024-11-08 18:55:56,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.2727272727272725) internal successors, (240), 33 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 5253 transitions. [2024-11-08 18:55:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:56,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:56,080 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:56,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:56,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-11-08 18:55:56,281 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:56,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash 52381343, now seen corresponding path program 1 times [2024-11-08 18:55:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:56,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327979166] [2024-11-08 18:55:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:56,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 18:55:56,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:56,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327979166] [2024-11-08 18:55:56,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327979166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:56,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:56,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:55:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266261823] [2024-11-08 18:55:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:56,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:55:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:55:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:55:56,772 INFO L87 Difference]: Start difference. First operand 3726 states and 5253 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:56,988 INFO L93 Difference]: Finished difference Result 7306 states and 10310 transitions. [2024-11-08 18:55:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:55:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:56,991 INFO L225 Difference]: With dead ends: 7306 [2024-11-08 18:55:56,991 INFO L226 Difference]: Without dead ends: 3639 [2024-11-08 18:55:56,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:55:56,993 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 16 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:56,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 468 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:55:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2024-11-08 18:55:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3622. [2024-11-08 18:55:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 1.4109362054681027) internal successors, (5109), 3621 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5109 transitions. [2024-11-08 18:55:57,019 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5109 transitions. Word has length 103 [2024-11-08 18:55:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:57,019 INFO L471 AbstractCegarLoop]: Abstraction has 3622 states and 5109 transitions. [2024-11-08 18:55:57,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5109 transitions. [2024-11-08 18:55:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:57,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:57,021 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:57,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-11-08 18:55:57,021 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:57,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:57,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1404761193, now seen corresponding path program 1 times [2024-11-08 18:55:57,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:57,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003029845] [2024-11-08 18:55:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:55:57,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003029845] [2024-11-08 18:55:57,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003029845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:57,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:57,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 18:55:57,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934414558] [2024-11-08 18:55:57,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:57,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:55:57,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:55:57,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:55:57,879 INFO L87 Difference]: Start difference. First operand 3622 states and 5109 transitions. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:58,226 INFO L93 Difference]: Finished difference Result 7626 states and 10682 transitions. [2024-11-08 18:55:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:55:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:58,229 INFO L225 Difference]: With dead ends: 7626 [2024-11-08 18:55:58,229 INFO L226 Difference]: Without dead ends: 4067 [2024-11-08 18:55:58,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:55:58,231 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 249 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:58,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1996 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:55:58,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2024-11-08 18:55:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3533. [2024-11-08 18:55:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 3532 states have (on average 1.4093997734994337) internal successors, (4978), 3532 states have internal predecessors, (4978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4978 transitions. [2024-11-08 18:55:58,257 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4978 transitions. Word has length 103 [2024-11-08 18:55:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:58,257 INFO L471 AbstractCegarLoop]: Abstraction has 3533 states and 4978 transitions. [2024-11-08 18:55:58,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4978 transitions. [2024-11-08 18:55:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:58,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:58,260 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:58,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-11-08 18:55:58,260 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:58,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2062521961, now seen corresponding path program 1 times [2024-11-08 18:55:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553395914] [2024-11-08 18:55:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:55:59,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:59,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553395914] [2024-11-08 18:55:59,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553395914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:59,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:59,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-08 18:55:59,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263029739] [2024-11-08 18:55:59,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:59,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:55:59,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:59,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:55:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:55:59,365 INFO L87 Difference]: Start difference. First operand 3533 states and 4978 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:59,861 INFO L93 Difference]: Finished difference Result 7466 states and 10444 transitions. [2024-11-08 18:55:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:55:59,861 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:55:59,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:59,864 INFO L225 Difference]: With dead ends: 7466 [2024-11-08 18:55:59,864 INFO L226 Difference]: Without dead ends: 3996 [2024-11-08 18:55:59,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:55:59,865 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 292 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:59,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 2080 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:55:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2024-11-08 18:55:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3537. [2024-11-08 18:55:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 1.4100678733031675) internal successors, (4986), 3536 states have internal predecessors, (4986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 4986 transitions. [2024-11-08 18:55:59,892 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 4986 transitions. Word has length 103 [2024-11-08 18:55:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:59,892 INFO L471 AbstractCegarLoop]: Abstraction has 3537 states and 4986 transitions. [2024-11-08 18:55:59,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 4986 transitions. [2024-11-08 18:55:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:55:59,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:59,895 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:59,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-11-08 18:55:59,895 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:59,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1114531785, now seen corresponding path program 1 times [2024-11-08 18:55:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716413998] [2024-11-08 18:55:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:56:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:00,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716413998] [2024-11-08 18:56:00,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716413998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:00,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:00,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704130045] [2024-11-08 18:56:00,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:00,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:00,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:00,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:00,309 INFO L87 Difference]: Start difference. First operand 3537 states and 4986 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:00,473 INFO L93 Difference]: Finished difference Result 6758 states and 9500 transitions. [2024-11-08 18:56:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:56:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:00,475 INFO L225 Difference]: With dead ends: 6758 [2024-11-08 18:56:00,475 INFO L226 Difference]: Without dead ends: 3272 [2024-11-08 18:56:00,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:56:00,477 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 90 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:00,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 367 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2024-11-08 18:56:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3265. [2024-11-08 18:56:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 1.4004289215686274) internal successors, (4571), 3264 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 4571 transitions. [2024-11-08 18:56:00,500 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 4571 transitions. Word has length 103 [2024-11-08 18:56:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:00,500 INFO L471 AbstractCegarLoop]: Abstraction has 3265 states and 4571 transitions. [2024-11-08 18:56:00,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 4571 transitions. [2024-11-08 18:56:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:56:00,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:00,502 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:00,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-11-08 18:56:00,502 INFO L396 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:00,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1022543121, now seen corresponding path program 1 times [2024-11-08 18:56:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:00,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109802459] [2024-11-08 18:56:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:56:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109802459] [2024-11-08 18:56:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109802459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878834524] [2024-11-08 18:56:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:02,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:02,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:02,869 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:02,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 18:56:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:03,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 18:56:03,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:56:04,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:56:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878834524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:05,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 12] total 42 [2024-11-08 18:56:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835825101] [2024-11-08 18:56:05,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:05,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 18:56:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 18:56:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:56:05,872 INFO L87 Difference]: Start difference. First operand 3265 states and 4571 transitions. Second operand has 42 states, 42 states have (on average 6.023809523809524) internal successors, (253), 42 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:11,136 INFO L93 Difference]: Finished difference Result 6899 states and 9621 transitions. [2024-11-08 18:56:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 18:56:11,136 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.023809523809524) internal successors, (253), 42 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:56:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:11,139 INFO L225 Difference]: With dead ends: 6899 [2024-11-08 18:56:11,139 INFO L226 Difference]: Without dead ends: 3698 [2024-11-08 18:56:11,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=668, Invalid=6642, Unknown=0, NotChecked=0, Total=7310 [2024-11-08 18:56:11,141 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 691 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:11,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 2382 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 18:56:11,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2024-11-08 18:56:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3303. [2024-11-08 18:56:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 1.3961235614778922) internal successors, (4610), 3302 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 4610 transitions. [2024-11-08 18:56:11,166 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 4610 transitions. Word has length 103 [2024-11-08 18:56:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:11,166 INFO L471 AbstractCegarLoop]: Abstraction has 3303 states and 4610 transitions. [2024-11-08 18:56:11,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.023809523809524) internal successors, (253), 42 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 4610 transitions. [2024-11-08 18:56:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:56:11,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:11,168 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:11,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:11,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:11,369 INFO L396 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:11,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash -554213359, now seen corresponding path program 1 times [2024-11-08 18:56:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:11,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698050195] [2024-11-08 18:56:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:11,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:56:12,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:12,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698050195] [2024-11-08 18:56:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698050195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:12,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880345299] [2024-11-08 18:56:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:12,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:12,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:12,301 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:12,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 18:56:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:13,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-08 18:56:13,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:15,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:56:20,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880345299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:20,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:20,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27, 17] total 52 [2024-11-08 18:56:20,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495458045] [2024-11-08 18:56:20,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:20,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 18:56:20,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 18:56:20,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 18:56:20,961 INFO L87 Difference]: Start difference. First operand 3303 states and 4610 transitions. Second operand has 52 states, 52 states have (on average 5.461538461538462) internal successors, (284), 52 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:24,245 INFO L93 Difference]: Finished difference Result 6618 states and 9220 transitions. [2024-11-08 18:56:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 18:56:24,245 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.461538461538462) internal successors, (284), 52 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:56:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:24,247 INFO L225 Difference]: With dead ends: 6618 [2024-11-08 18:56:24,247 INFO L226 Difference]: Without dead ends: 3380 [2024-11-08 18:56:24,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=569, Invalid=4687, Unknown=0, NotChecked=0, Total=5256 [2024-11-08 18:56:24,249 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 267 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:24,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 3498 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 18:56:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2024-11-08 18:56:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3306. [2024-11-08 18:56:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3306 states, 3305 states have (on average 1.3957639939485629) internal successors, (4613), 3305 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 4613 transitions. [2024-11-08 18:56:24,274 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 4613 transitions. Word has length 103 [2024-11-08 18:56:24,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:24,274 INFO L471 AbstractCegarLoop]: Abstraction has 3306 states and 4613 transitions. [2024-11-08 18:56:24,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.461538461538462) internal successors, (284), 52 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 4613 transitions. [2024-11-08 18:56:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:56:24,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:24,277 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:24,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:24,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:24,477 INFO L396 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:24,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash -739975157, now seen corresponding path program 1 times [2024-11-08 18:56:24,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:24,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677737464] [2024-11-08 18:56:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:24,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:56:25,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:25,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677737464] [2024-11-08 18:56:25,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677737464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:25,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:25,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:56:25,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113086608] [2024-11-08 18:56:25,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:25,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:56:25,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:25,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:56:25,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:56:25,095 INFO L87 Difference]: Start difference. First operand 3306 states and 4613 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:25,261 INFO L93 Difference]: Finished difference Result 6068 states and 8464 transitions. [2024-11-08 18:56:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:56:25,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:56:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:25,264 INFO L225 Difference]: With dead ends: 6068 [2024-11-08 18:56:25,264 INFO L226 Difference]: Without dead ends: 2815 [2024-11-08 18:56:25,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:56:25,265 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 128 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:25,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 366 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2024-11-08 18:56:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2811. [2024-11-08 18:56:25,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2810 states have (on average 1.392170818505338) internal successors, (3912), 2810 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3912 transitions. [2024-11-08 18:56:25,285 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3912 transitions. Word has length 103 [2024-11-08 18:56:25,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:25,285 INFO L471 AbstractCegarLoop]: Abstraction has 2811 states and 3912 transitions. [2024-11-08 18:56:25,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3912 transitions. [2024-11-08 18:56:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:56:25,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:25,287 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:25,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-11-08 18:56:25,287 INFO L396 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:25,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:25,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1183156553, now seen corresponding path program 1 times [2024-11-08 18:56:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:25,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041579814] [2024-11-08 18:56:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:56:27,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041579814] [2024-11-08 18:56:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041579814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792429747] [2024-11-08 18:56:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:27,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:27,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:27,419 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:27,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 18:56:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:28,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-08 18:56:28,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:56:31,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:56:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792429747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:37,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:37,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 28] total 65 [2024-11-08 18:56:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178920472] [2024-11-08 18:56:37,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:37,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 18:56:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 18:56:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=3752, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 18:56:37,651 INFO L87 Difference]: Start difference. First operand 2811 states and 3912 transitions. Second operand has 65 states, 65 states have (on average 4.061538461538461) internal successors, (264), 65 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:47,654 INFO L93 Difference]: Finished difference Result 6673 states and 9258 transitions. [2024-11-08 18:56:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-08 18:56:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.061538461538461) internal successors, (264), 65 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 18:56:47,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:47,657 INFO L225 Difference]: With dead ends: 6673 [2024-11-08 18:56:47,657 INFO L226 Difference]: Without dead ends: 3925 [2024-11-08 18:56:47,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3631 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1474, Invalid=13778, Unknown=0, NotChecked=0, Total=15252 [2024-11-08 18:56:47,659 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 637 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:47,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 3214 Invalid, 3903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-08 18:56:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2024-11-08 18:56:47,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3311. [2024-11-08 18:56:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 3310 states have (on average 1.3981873111782477) internal successors, (4628), 3310 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4628 transitions. [2024-11-08 18:56:47,683 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4628 transitions. Word has length 104 [2024-11-08 18:56:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:47,683 INFO L471 AbstractCegarLoop]: Abstraction has 3311 states and 4628 transitions. [2024-11-08 18:56:47,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.061538461538461) internal successors, (264), 65 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4628 transitions. [2024-11-08 18:56:47,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:56:47,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:47,685 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:47,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-08 18:56:47,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:47,885 INFO L396 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:47,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1837683425, now seen corresponding path program 1 times [2024-11-08 18:56:47,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:47,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096527310] [2024-11-08 18:56:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:47,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:56:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096527310] [2024-11-08 18:56:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096527310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692462809] [2024-11-08 18:56:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:48,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:48,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:48,646 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:48,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1307866e-0164-4e77-bfc2-a3a0625f7019/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 18:56:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:49,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-08 18:56:49,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:56:50,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:58:26,771 WARN L286 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 143 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)