./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/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_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/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 32bit --witnessprinter.graph.data.programhash 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:23:31,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:23:31,911 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:23:31,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:23:31,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:23:31,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:23:31,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:23:31,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:23:31,962 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:23:31,963 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:23:31,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:23:31,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:23:31,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:23:31,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:23:31,966 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:23:31,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:23:31,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:23:31,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:23:31,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:23:31,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:23:31,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:23:31,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:23:31,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:23:31,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:23:31,971 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:23:31,971 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:23:31,972 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:23:31,972 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:23:31,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:23:31,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:23:31,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:23:31,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:23:31,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:23:31,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:23:31,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:23:31,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:23:31,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:23:31,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:23:31,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:23:31,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:23:31,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:23:31,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:23:31,979 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_e084b58e-1a20-45ac-986c-95a4a4d415fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 [2024-11-08 18:23:32,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:23:32,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:23:32,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:23:32,342 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:23:32,343 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:23:32,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c Unable to find full path for "g++" [2024-11-08 18:23:34,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:23:35,087 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:23:35,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-08 18:23:35,128 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/data/fbbe2bad8/3e5bc351a6e4413f837740db840ed7ed/FLAG2d28d83e2 [2024-11-08 18:23:35,151 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/data/fbbe2bad8/3e5bc351a6e4413f837740db840ed7ed [2024-11-08 18:23:35,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:23:35,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:23:35,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:23:35,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:23:35,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:23:35,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:23:35" (1/1) ... [2024-11-08 18:23:35,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e89823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:35, skipping insertion in model container [2024-11-08 18:23:35,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:23:35" (1/1) ... [2024-11-08 18:23:35,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:23:35,701 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_e084b58e-1a20-45ac-986c-95a4a4d415fb/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2024-11-08 18:23:35,821 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_e084b58e-1a20-45ac-986c-95a4a4d415fb/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2024-11-08 18:23:36,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:23:36,884 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:23:36,935 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_e084b58e-1a20-45ac-986c-95a4a4d415fb/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2024-11-08 18:23:36,954 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_e084b58e-1a20-45ac-986c-95a4a4d415fb/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2024-11-08 18:23:37,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:23:37,614 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:23:37,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37 WrapperNode [2024-11-08 18:23:37,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:23:37,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:23:37,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:23:37,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:23:37,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:37,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,127 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4982 [2024-11-08 18:23:38,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:23:38,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:23:38,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:23:38,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:23:38,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,412 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 18:23:38,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:23:38,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:23:38,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:23:38,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:23:38,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (1/1) ... [2024-11-08 18:23:38,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:23:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:23:38,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:23:38,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:23:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:23:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:23:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:23:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:23:39,160 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:23:39,167 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:23:46,350 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-08 18:23:46,350 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:23:46,413 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:23:46,413 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 18:23:46,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:23:46 BoogieIcfgContainer [2024-11-08 18:23:46,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:23:46,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:23:46,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:23:46,425 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:23:46,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:23:35" (1/3) ... [2024-11-08 18:23:46,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c49915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:23:46, skipping insertion in model container [2024-11-08 18:23:46,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:37" (2/3) ... [2024-11-08 18:23:46,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c49915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:23:46, skipping insertion in model container [2024-11-08 18:23:46,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:23:46" (3/3) ... [2024-11-08 18:23:46,431 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-08 18:23:46,449 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:23:46,449 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:23:46,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:23:46,569 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;@24284e78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:23:46,569 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:23:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:46,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 18:23:46,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:46,592 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:46,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:46,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 77533588, now seen corresponding path program 1 times [2024-11-08 18:23:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:46,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636648367] [2024-11-08 18:23:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:46,852 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 18:23:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:46,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636648367] [2024-11-08 18:23:46,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636648367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:46,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:46,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:46,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004804409] [2024-11-08 18:23:46,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:46,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:23:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:23:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:23:46,923 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:47,032 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-08 18:23:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:23:47,038 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 18:23:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:47,058 INFO L225 Difference]: With dead ends: 1724 [2024-11-08 18:23:47,058 INFO L226 Difference]: Without dead ends: 808 [2024-11-08 18:23:47,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:23:47,068 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:47,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-08 18:23:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-08 18:23:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-08 18:23:47,167 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-08 18:23:47,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:47,168 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-08 18:23:47,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:47,168 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-08 18:23:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 18:23:47,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:47,171 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:47,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:23:47,172 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:47,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash -933583662, now seen corresponding path program 1 times [2024-11-08 18:23:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168269328] [2024-11-08 18:23:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:47,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:47,440 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 18:23:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:47,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168269328] [2024-11-08 18:23:47,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168269328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:47,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:47,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263523160] [2024-11-08 18:23:47,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:47,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:23:47,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:23:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:23:47,449 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:47,592 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-08 18:23:47,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:23:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 18:23:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:47,599 INFO L225 Difference]: With dead ends: 844 [2024-11-08 18:23:47,599 INFO L226 Difference]: Without dead ends: 808 [2024-11-08 18:23:47,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:23:47,601 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:47,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:23:47,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-08 18:23:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-08 18:23:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-08 18:23:47,683 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-08 18:23:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:47,684 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-08 18:23:47,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-08 18:23:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 18:23:47,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:47,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:47,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:23:47,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:47,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:47,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2056430198, now seen corresponding path program 1 times [2024-11-08 18:23:47,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963094769] [2024-11-08 18:23:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:47,914 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 18:23:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963094769] [2024-11-08 18:23:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963094769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708766128] [2024-11-08 18:23:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:47,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:23:47,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:47,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:23:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:23:47,919 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:48,096 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-11-08 18:23:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:23:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-08 18:23:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:48,103 INFO L225 Difference]: With dead ends: 1000 [2024-11-08 18:23:48,104 INFO L226 Difference]: Without dead ends: 968 [2024-11-08 18:23:48,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:23:48,106 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 4644 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:48,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 1789 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:23:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-08 18:23:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-11-08 18:23:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-11-08 18:23:48,134 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-11-08 18:23:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:48,135 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-11-08 18:23:48,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-11-08 18:23:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 18:23:48,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:48,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:48,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:23:48,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:48,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1960165254, now seen corresponding path program 1 times [2024-11-08 18:23:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:48,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436531234] [2024-11-08 18:23:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:48,290 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 18:23:48,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:48,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436531234] [2024-11-08 18:23:48,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436531234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:48,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:48,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:48,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752641063] [2024-11-08 18:23:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:48,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:48,292 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:48,341 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-11-08 18:23:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-08 18:23:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:48,346 INFO L225 Difference]: With dead ends: 951 [2024-11-08 18:23:48,346 INFO L226 Difference]: Without dead ends: 889 [2024-11-08 18:23:48,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:48,350 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:48,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-08 18:23:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-11-08 18:23:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-11-08 18:23:48,374 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-11-08 18:23:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:48,375 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-11-08 18:23:48,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-11-08 18:23:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 18:23:48,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:48,379 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:48,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:23:48,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:48,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1893671742, now seen corresponding path program 1 times [2024-11-08 18:23:48,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:48,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065129774] [2024-11-08 18:23:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:48,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:48,597 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 18:23:48,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:48,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065129774] [2024-11-08 18:23:48,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065129774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:48,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:48,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:48,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999249746] [2024-11-08 18:23:48,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:48,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:23:48,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:23:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:23:48,600 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:48,706 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-11-08 18:23:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:23:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-08 18:23:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:48,711 INFO L225 Difference]: With dead ends: 996 [2024-11-08 18:23:48,711 INFO L226 Difference]: Without dead ends: 887 [2024-11-08 18:23:48,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:23:48,713 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:48,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-08 18:23:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-11-08 18:23:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-11-08 18:23:48,740 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-11-08 18:23:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:48,741 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-11-08 18:23:48,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-11-08 18:23:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 18:23:48,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:48,742 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:48,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:23:48,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:48,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1010994927, now seen corresponding path program 1 times [2024-11-08 18:23:48,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:48,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113995482] [2024-11-08 18:23:48,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:48,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:49,067 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 18:23:49,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:49,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113995482] [2024-11-08 18:23:49,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113995482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:49,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:49,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:23:49,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672404344] [2024-11-08 18:23:49,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:49,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:23:49,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:49,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:23:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:23:49,071 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:49,180 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-11-08 18:23:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:23:49,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 18:23:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:49,184 INFO L225 Difference]: With dead ends: 893 [2024-11-08 18:23:49,186 INFO L226 Difference]: Without dead ends: 891 [2024-11-08 18:23:49,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:23:49,188 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:49,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-08 18:23:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-11-08 18:23:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-11-08 18:23:49,219 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-11-08 18:23:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:49,219 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-11-08 18:23:49,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-11-08 18:23:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 18:23:49,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:49,221 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:49,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:23:49,222 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:49,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash 936167746, now seen corresponding path program 1 times [2024-11-08 18:23:49,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:49,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306517240] [2024-11-08 18:23:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:49,305 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 18:23:49,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:49,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306517240] [2024-11-08 18:23:49,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306517240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:49,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:49,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:49,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314089321] [2024-11-08 18:23:49,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:49,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:49,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:49,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:49,308 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:49,340 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-11-08 18:23:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:49,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 18:23:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:49,345 INFO L225 Difference]: With dead ends: 1105 [2024-11-08 18:23:49,345 INFO L226 Difference]: Without dead ends: 990 [2024-11-08 18:23:49,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:49,347 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:49,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-08 18:23:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-08 18:23:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-11-08 18:23:49,390 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-11-08 18:23:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:49,390 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-11-08 18:23:49,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-11-08 18:23:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 18:23:49,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:49,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:49,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:23:49,395 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:49,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1577866686, now seen corresponding path program 1 times [2024-11-08 18:23:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542226561] [2024-11-08 18:23:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:49,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:49,511 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 18:23:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542226561] [2024-11-08 18:23:49,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542226561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:49,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:49,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350127869] [2024-11-08 18:23:49,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:49,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:49,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:49,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:49,514 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:49,551 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-11-08 18:23:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:49,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 18:23:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:49,556 INFO L225 Difference]: With dead ends: 1380 [2024-11-08 18:23:49,557 INFO L226 Difference]: Without dead ends: 1168 [2024-11-08 18:23:49,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:49,558 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:49,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1595 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:49,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-08 18:23:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-11-08 18:23:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-11-08 18:23:49,597 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-11-08 18:23:49,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:49,597 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-11-08 18:23:49,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-11-08 18:23:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 18:23:49,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:49,600 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:49,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:23:49,600 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:49,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1231089507, now seen corresponding path program 1 times [2024-11-08 18:23:49,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:49,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792268349] [2024-11-08 18:23:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:49,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:49,659 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 18:23:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:49,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792268349] [2024-11-08 18:23:49,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792268349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:49,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:49,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121532242] [2024-11-08 18:23:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:49,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:49,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:49,661 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:49,705 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-11-08 18:23:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:49,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 18:23:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:49,713 INFO L225 Difference]: With dead ends: 1589 [2024-11-08 18:23:49,713 INFO L226 Difference]: Without dead ends: 1354 [2024-11-08 18:23:49,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:49,717 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:49,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-11-08 18:23:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-11-08 18:23:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-11-08 18:23:49,759 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-11-08 18:23:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:49,759 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-11-08 18:23:49,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-11-08 18:23:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 18:23:49,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:49,762 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:49,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:23:49,762 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:49,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1786054963, now seen corresponding path program 1 times [2024-11-08 18:23:49,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85434765] [2024-11-08 18:23:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:49,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:23:49,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85434765] [2024-11-08 18:23:49,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85434765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:49,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:49,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:49,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111496200] [2024-11-08 18:23:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:49,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:23:49,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:23:49,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:23:49,931 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:50,096 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2024-11-08 18:23:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:23:50,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 18:23:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:50,110 INFO L225 Difference]: With dead ends: 3208 [2024-11-08 18:23:50,110 INFO L226 Difference]: Without dead ends: 2634 [2024-11-08 18:23:50,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:23:50,112 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 3050 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:50,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3171 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:23:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-08 18:23:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2024-11-08 18:23:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2024-11-08 18:23:50,187 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2024-11-08 18:23:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:50,189 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2024-11-08 18:23:50,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2024-11-08 18:23:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 18:23:50,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:50,191 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:50,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:23:50,192 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:50,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:50,193 INFO L85 PathProgramCache]: Analyzing trace with hash -727979469, now seen corresponding path program 1 times [2024-11-08 18:23:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108314029] [2024-11-08 18:23:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:23:50,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108314029] [2024-11-08 18:23:50,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108314029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:50,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:50,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:50,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068524848] [2024-11-08 18:23:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:50,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:23:50,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:23:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:23:50,340 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:50,481 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2024-11-08 18:23:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:23:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 18:23:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:50,494 INFO L225 Difference]: With dead ends: 3780 [2024-11-08 18:23:50,495 INFO L226 Difference]: Without dead ends: 3206 [2024-11-08 18:23:50,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:23:50,499 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 3055 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:50,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3055 Valid, 3156 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:23:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-11-08 18:23:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2024-11-08 18:23:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2024-11-08 18:23:50,592 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2024-11-08 18:23:50,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:50,593 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2024-11-08 18:23:50,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2024-11-08 18:23:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:23:50,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:50,594 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:50,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:23:50,594 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:50,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:50,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1357660715, now seen corresponding path program 1 times [2024-11-08 18:23:50,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:50,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516990286] [2024-11-08 18:23:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:50,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516990286] [2024-11-08 18:23:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516990286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:50,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:50,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205690968] [2024-11-08 18:23:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:50,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:50,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:50,770 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:50,858 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2024-11-08 18:23:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:50,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:23:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:50,867 INFO L225 Difference]: With dead ends: 4260 [2024-11-08 18:23:50,867 INFO L226 Difference]: Without dead ends: 2254 [2024-11-08 18:23:50,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:50,871 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:50,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-11-08 18:23:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2024-11-08 18:23:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2024-11-08 18:23:50,964 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2024-11-08 18:23:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:50,964 INFO L471 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2024-11-08 18:23:50,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2024-11-08 18:23:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:23:50,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:50,966 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:50,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:23:50,967 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:50,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -533260210, now seen corresponding path program 1 times [2024-11-08 18:23:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562473544] [2024-11-08 18:23:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:50,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:23:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562473544] [2024-11-08 18:23:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562473544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:51,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:51,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508744855] [2024-11-08 18:23:51,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:51,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:23:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:23:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:23:51,120 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 18:23:51,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:51,276 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2024-11-08 18:23:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:23:51,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 56 [2024-11-08 18:23:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:51,287 INFO L225 Difference]: With dead ends: 3508 [2024-11-08 18:23:51,287 INFO L226 Difference]: Without dead ends: 3090 [2024-11-08 18:23:51,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:23:51,290 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 3051 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:51,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3174 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:23:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-11-08 18:23:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2024-11-08 18:23:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2024-11-08 18:23:51,398 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2024-11-08 18:23:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:51,399 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2024-11-08 18:23:51,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 18:23:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2024-11-08 18:23:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:23:51,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:51,401 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:23:51,401 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 639957204, now seen corresponding path program 1 times [2024-11-08 18:23:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796398395] [2024-11-08 18:23:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:51,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796398395] [2024-11-08 18:23:51,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796398395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:51,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:51,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160133561] [2024-11-08 18:23:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:51,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:51,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:51,539 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:51,603 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2024-11-08 18:23:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:51,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:23:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:51,610 INFO L225 Difference]: With dead ends: 3608 [2024-11-08 18:23:51,610 INFO L226 Difference]: Without dead ends: 1734 [2024-11-08 18:23:51,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:51,613 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:51,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-08 18:23:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-11-08 18:23:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2024-11-08 18:23:51,678 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2024-11-08 18:23:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:51,678 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2024-11-08 18:23:51,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2024-11-08 18:23:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:23:51,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:51,680 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:51,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:23:51,681 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:51,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash -931964666, now seen corresponding path program 1 times [2024-11-08 18:23:51,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:51,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210249042] [2024-11-08 18:23:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210249042] [2024-11-08 18:23:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210249042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677981484] [2024-11-08 18:23:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:51,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:51,804 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:23:51,840 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2024-11-08 18:23:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:23:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:23:51,845 INFO L225 Difference]: With dead ends: 2204 [2024-11-08 18:23:51,846 INFO L226 Difference]: Without dead ends: 1266 [2024-11-08 18:23:51,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:51,848 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:23:51,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:23:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-08 18:23:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2024-11-08 18:23:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2024-11-08 18:23:51,881 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2024-11-08 18:23:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:23:51,882 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2024-11-08 18:23:51,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:51,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2024-11-08 18:23:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:23:51,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:23:51,883 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:51,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:23:51,884 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:23:51,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2034993148, now seen corresponding path program 1 times [2024-11-08 18:23:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:51,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971018762] [2024-11-08 18:23:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:52,031 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 18:23:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971018762] [2024-11-08 18:23:52,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971018762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551270809] [2024-11-08 18:23:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:52,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:23:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:52,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:23:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:23:52,033 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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 18:24:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:00,375 INFO L93 Difference]: Finished difference Result 3519 states and 6419 transitions. [2024-11-08 18:24:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:24:00,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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 18:24:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:00,382 INFO L225 Difference]: With dead ends: 3519 [2024-11-08 18:24:00,382 INFO L226 Difference]: Without dead ends: 2766 [2024-11-08 18:24:00,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:24:00,384 INFO L432 NwaCegarLoop]: 747 mSDtfsCounter, 2337 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:00,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 765 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-08 18:24:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2024-11-08 18:24:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2766. [2024-11-08 18:24:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 1.52821997105644) internal successors, (4224), 2765 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4224 transitions. [2024-11-08 18:24:00,451 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4224 transitions. Word has length 60 [2024-11-08 18:24:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:00,452 INFO L471 AbstractCegarLoop]: Abstraction has 2766 states and 4224 transitions. [2024-11-08 18:24:00,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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 18:24:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4224 transitions. [2024-11-08 18:24:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:24:00,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:00,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:00,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:24:00,453 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:00,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1652101192, now seen corresponding path program 1 times [2024-11-08 18:24:00,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:00,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801019451] [2024-11-08 18:24:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:02,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:02,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801019451] [2024-11-08 18:24:02,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801019451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:02,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911620288] [2024-11-08 18:24:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:02,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:02,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:02,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:02,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:24:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:02,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 18:24:02,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:24:02,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:24:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911620288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:03,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:03,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-08 18:24:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354119753] [2024-11-08 18:24:03,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:03,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:24:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:03,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:24:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:24:03,016 INFO L87 Difference]: Start difference. First operand 2766 states and 4224 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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 18:24:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:05,557 INFO L93 Difference]: Finished difference Result 5167 states and 7398 transitions. [2024-11-08 18:24:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 18:24:05,557 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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 61 [2024-11-08 18:24:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:05,567 INFO L225 Difference]: With dead ends: 5167 [2024-11-08 18:24:05,567 INFO L226 Difference]: Without dead ends: 4697 [2024-11-08 18:24:05,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 18:24:05,571 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 15751 mSDsluCounter, 7677 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15751 SdHoareTripleChecker+Valid, 9176 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:05,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15751 Valid, 9176 Invalid, 691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:24:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2024-11-08 18:24:05,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4663. [2024-11-08 18:24:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4661 states have (on average 1.4093542158335122) internal successors, (6569), 4662 states have internal predecessors, (6569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 6569 transitions. [2024-11-08 18:24:05,801 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 6569 transitions. Word has length 61 [2024-11-08 18:24:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:05,802 INFO L471 AbstractCegarLoop]: Abstraction has 4663 states and 6569 transitions. [2024-11-08 18:24:05,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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 18:24:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 6569 transitions. [2024-11-08 18:24:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:24:05,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:05,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:05,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:24:06,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:24:06,008 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:06,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1556370466, now seen corresponding path program 1 times [2024-11-08 18:24:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:06,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919906091] [2024-11-08 18:24:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:06,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919906091] [2024-11-08 18:24:09,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919906091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313934762] [2024-11-08 18:24:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:09,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:09,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:09,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:24:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:09,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:24:09,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:09,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313934762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:11,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:11,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-08 18:24:11,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918505471] [2024-11-08 18:24:11,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:11,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 18:24:11,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 18:24:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-08 18:24:11,021 INFO L87 Difference]: Start difference. First operand 4663 states and 6569 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:12,052 INFO L93 Difference]: Finished difference Result 8770 states and 11759 transitions. [2024-11-08 18:24:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 18:24:12,053 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 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 18:24:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:12,066 INFO L225 Difference]: With dead ends: 8770 [2024-11-08 18:24:12,066 INFO L226 Difference]: Without dead ends: 6811 [2024-11-08 18:24:12,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 18:24:12,071 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 11997 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11997 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:12,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11997 Valid, 6303 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:24:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2024-11-08 18:24:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 6745. [2024-11-08 18:24:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6743 states have (on average 1.349251075189085) internal successors, (9098), 6744 states have internal predecessors, (9098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 9098 transitions. [2024-11-08 18:24:12,293 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 9098 transitions. Word has length 62 [2024-11-08 18:24:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:12,293 INFO L471 AbstractCegarLoop]: Abstraction has 6745 states and 9098 transitions. [2024-11-08 18:24:12,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 9098 transitions. [2024-11-08 18:24:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:24:12,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:12,295 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:12,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:24:12,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:24:12,496 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:12,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2050459244, now seen corresponding path program 1 times [2024-11-08 18:24:12,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:12,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710433414] [2024-11-08 18:24:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:12,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:12,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:12,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710433414] [2024-11-08 18:24:12,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710433414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:12,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621506082] [2024-11-08 18:24:12,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:12,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:12,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:12,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:12,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:24:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:13,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:24:13,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:13,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621506082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:15,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-08 18:24:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439313610] [2024-11-08 18:24:15,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:15,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 18:24:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 18:24:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:24:15,073 INFO L87 Difference]: Start difference. First operand 6745 states and 9098 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:19,083 INFO L93 Difference]: Finished difference Result 14766 states and 19158 transitions. [2024-11-08 18:24:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 18:24:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:24:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:19,105 INFO L225 Difference]: With dead ends: 14766 [2024-11-08 18:24:19,105 INFO L226 Difference]: Without dead ends: 10806 [2024-11-08 18:24:19,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 18:24:19,114 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 21870 mSDsluCounter, 13915 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21870 SdHoareTripleChecker+Valid, 15423 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:19,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21870 Valid, 15423 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:24:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10806 states. [2024-11-08 18:24:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10806 to 7404. [2024-11-08 18:24:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7402 states have (on average 1.3393677384490679) internal successors, (9914), 7403 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 9914 transitions. [2024-11-08 18:24:19,419 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 9914 transitions. Word has length 62 [2024-11-08 18:24:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:19,420 INFO L471 AbstractCegarLoop]: Abstraction has 7404 states and 9914 transitions. [2024-11-08 18:24:19,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 9914 transitions. [2024-11-08 18:24:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:24:19,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:19,421 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:19,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:24:19,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:19,622 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:19,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash 442628388, now seen corresponding path program 1 times [2024-11-08 18:24:19,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924612535] [2024-11-08 18:24:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:20,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924612535] [2024-11-08 18:24:20,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924612535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:20,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633778544] [2024-11-08 18:24:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:20,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:20,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:20,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:20,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:24:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:20,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:24:20,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:22,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:23,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633778544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:23,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:23,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-08 18:24:23,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063001600] [2024-11-08 18:24:23,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:23,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 18:24:23,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 18:24:23,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:24:23,618 INFO L87 Difference]: Start difference. First operand 7404 states and 9914 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:25,770 INFO L93 Difference]: Finished difference Result 14054 states and 18217 transitions. [2024-11-08 18:24:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 18:24:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 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 18:24:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:25,789 INFO L225 Difference]: With dead ends: 14054 [2024-11-08 18:24:25,789 INFO L226 Difference]: Without dead ends: 9740 [2024-11-08 18:24:25,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 18:24:25,797 INFO L432 NwaCegarLoop]: 1514 mSDtfsCounter, 15577 mSDsluCounter, 7947 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15577 SdHoareTripleChecker+Valid, 9461 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:25,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15577 Valid, 9461 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:24:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9740 states. [2024-11-08 18:24:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9740 to 9316. [2024-11-08 18:24:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9316 states, 9314 states have (on average 1.309748765299549) internal successors, (12199), 9315 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 12199 transitions. [2024-11-08 18:24:26,241 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 12199 transitions. Word has length 63 [2024-11-08 18:24:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:26,242 INFO L471 AbstractCegarLoop]: Abstraction has 9316 states and 12199 transitions. [2024-11-08 18:24:26,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:24:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 12199 transitions. [2024-11-08 18:24:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:24:26,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:26,243 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:26,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:24:26,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:26,444 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:26,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1421767062, now seen corresponding path program 1 times [2024-11-08 18:24:26,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:26,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860068297] [2024-11-08 18:24:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:28,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:28,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860068297] [2024-11-08 18:24:28,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860068297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:28,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088279828] [2024-11-08 18:24:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:28,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:28,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:28,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:28,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:24:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:28,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:24:28,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:33,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:24:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:24:35,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088279828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:24:35,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:24:35,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-08 18:24:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995444420] [2024-11-08 18:24:35,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:24:35,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 18:24:35,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 18:24:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 18:24:35,668 INFO L87 Difference]: Start difference. First operand 9316 states and 12199 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:09,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:09,522 INFO L93 Difference]: Finished difference Result 16042 states and 20456 transitions. [2024-11-08 18:25:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-08 18:25:09,523 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 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 18:25:09,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:09,542 INFO L225 Difference]: With dead ends: 16042 [2024-11-08 18:25:09,542 INFO L226 Difference]: Without dead ends: 13203 [2024-11-08 18:25:09,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5729 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=4031, Invalid=15991, Unknown=0, NotChecked=0, Total=20022 [2024-11-08 18:25:09,555 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 25785 mSDsluCounter, 19298 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25785 SdHoareTripleChecker+Valid, 20834 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:09,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25785 Valid, 20834 Invalid, 2339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-08 18:25:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2024-11-08 18:25:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 11387. [2024-11-08 18:25:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11387 states, 11385 states have (on average 1.2968818620992535) internal successors, (14765), 11386 states have internal predecessors, (14765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11387 states to 11387 states and 14765 transitions. [2024-11-08 18:25:10,345 INFO L78 Accepts]: Start accepts. Automaton has 11387 states and 14765 transitions. Word has length 63 [2024-11-08 18:25:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:10,345 INFO L471 AbstractCegarLoop]: Abstraction has 11387 states and 14765 transitions. [2024-11-08 18:25:10,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 11387 states and 14765 transitions. [2024-11-08 18:25:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 18:25:10,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:10,347 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:10,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:25:10,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:10,548 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:10,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2102838268, now seen corresponding path program 1 times [2024-11-08 18:25:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:10,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895907650] [2024-11-08 18:25:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:12,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895907650] [2024-11-08 18:25:12,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895907650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:12,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607147620] [2024-11-08 18:25:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:12,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:12,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:12,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:12,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:25:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:12,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:25:12,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:13,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607147620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:14,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:14,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-08 18:25:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136255575] [2024-11-08 18:25:14,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:14,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 18:25:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 18:25:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 18:25:14,643 INFO L87 Difference]: Start difference. First operand 11387 states and 14765 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:18,665 INFO L93 Difference]: Finished difference Result 14885 states and 19042 transitions. [2024-11-08 18:25:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 18:25:18,668 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 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 18:25:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:18,681 INFO L225 Difference]: With dead ends: 14885 [2024-11-08 18:25:18,681 INFO L226 Difference]: Without dead ends: 11074 [2024-11-08 18:25:18,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 18:25:18,690 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 15889 mSDsluCounter, 11046 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15889 SdHoareTripleChecker+Valid, 12563 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:18,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15889 Valid, 12563 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:25:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11074 states. [2024-11-08 18:25:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11074 to 9456. [2024-11-08 18:25:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9456 states, 9454 states have (on average 1.3062195895917073) internal successors, (12349), 9455 states have internal predecessors, (12349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 12349 transitions. [2024-11-08 18:25:19,407 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 12349 transitions. Word has length 64 [2024-11-08 18:25:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:19,408 INFO L471 AbstractCegarLoop]: Abstraction has 9456 states and 12349 transitions. [2024-11-08 18:25:19,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 12349 transitions. [2024-11-08 18:25:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:25:19,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:19,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:19,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:25:19,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 18:25:19,616 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:19,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1223688180, now seen corresponding path program 1 times [2024-11-08 18:25:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846450045] [2024-11-08 18:25:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:22,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:22,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846450045] [2024-11-08 18:25:22,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846450045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:22,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440040255] [2024-11-08 18:25:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:22,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:22,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:22,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:22,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:25:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:22,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:25:22,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:23,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440040255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:25,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-08 18:25:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813451642] [2024-11-08 18:25:25,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:25,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 18:25:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 18:25:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:25:25,117 INFO L87 Difference]: Start difference. First operand 9456 states and 12349 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:40,754 INFO L93 Difference]: Finished difference Result 23366 states and 29399 transitions. [2024-11-08 18:25:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 18:25:40,755 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 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 18:25:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:40,779 INFO L225 Difference]: With dead ends: 23366 [2024-11-08 18:25:40,779 INFO L226 Difference]: Without dead ends: 18935 [2024-11-08 18:25:40,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=2435, Invalid=9121, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 18:25:40,790 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 19829 mSDsluCounter, 27564 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19829 SdHoareTripleChecker+Valid, 29147 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:40,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19829 Valid, 29147 Invalid, 2751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 18:25:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18935 states. [2024-11-08 18:25:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18935 to 6613. [2024-11-08 18:25:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6613 states, 6611 states have (on average 1.3459385872031462) internal successors, (8898), 6612 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 8898 transitions. [2024-11-08 18:25:41,439 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 8898 transitions. Word has length 65 [2024-11-08 18:25:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:41,439 INFO L471 AbstractCegarLoop]: Abstraction has 6613 states and 8898 transitions. [2024-11-08 18:25:41,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 8898 transitions. [2024-11-08 18:25:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:25:41,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:41,442 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:41,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:25:41,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 18:25:41,643 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:41,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash 367715101, now seen corresponding path program 1 times [2024-11-08 18:25:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:41,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228125626] [2024-11-08 18:25:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:42,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:42,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228125626] [2024-11-08 18:25:42,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228125626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:42,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179341509] [2024-11-08 18:25:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:42,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:42,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:42,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:42,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:25:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:43,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:25:43,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:44,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:46,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179341509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:46,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:46,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 18:25:46,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49795375] [2024-11-08 18:25:46,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:46,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 18:25:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 18:25:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:25:46,642 INFO L87 Difference]: Start difference. First operand 6613 states and 8898 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:48,593 INFO L93 Difference]: Finished difference Result 16183 states and 20826 transitions. [2024-11-08 18:25:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:25:48,594 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 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 18:25:48,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:48,602 INFO L225 Difference]: With dead ends: 16183 [2024-11-08 18:25:48,602 INFO L226 Difference]: Without dead ends: 12184 [2024-11-08 18:25:48,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:25:48,605 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 10477 mSDsluCounter, 12122 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10477 SdHoareTripleChecker+Valid, 13638 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:48,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10477 Valid, 13638 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:25:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2024-11-08 18:25:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 11364. [2024-11-08 18:25:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11364 states, 11362 states have (on average 1.2871853546910754) internal successors, (14625), 11363 states have internal predecessors, (14625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 14625 transitions. [2024-11-08 18:25:49,231 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 14625 transitions. Word has length 103 [2024-11-08 18:25:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:49,231 INFO L471 AbstractCegarLoop]: Abstraction has 11364 states and 14625 transitions. [2024-11-08 18:25:49,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 14625 transitions. [2024-11-08 18:25:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:25:49,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:49,234 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:49,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:25:49,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 18:25:49,435 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:49,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1055852687, now seen corresponding path program 1 times [2024-11-08 18:25:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600253618] [2024-11-08 18:25:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:50,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:50,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600253618] [2024-11-08 18:25:50,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600253618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:50,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165179834] [2024-11-08 18:25:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:50,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:50,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:50,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:50,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:25:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:50,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:25:50,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:51,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165179834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:53,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 18:25:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406115320] [2024-11-08 18:25:53,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:53,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 18:25:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 18:25:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:25:53,446 INFO L87 Difference]: Start difference. First operand 11364 states and 14625 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:54,865 INFO L93 Difference]: Finished difference Result 16074 states and 20389 transitions. [2024-11-08 18:25:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:25:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 18:25:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:54,874 INFO L225 Difference]: With dead ends: 16074 [2024-11-08 18:25:54,874 INFO L226 Difference]: Without dead ends: 10362 [2024-11-08 18:25:54,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:25:54,880 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 17824 mSDsluCounter, 12096 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17824 SdHoareTripleChecker+Valid, 13611 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:54,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17824 Valid, 13611 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:25:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2024-11-08 18:25:55,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 10270. [2024-11-08 18:25:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10270 states, 10268 states have (on average 1.286618620958317) internal successors, (13211), 10269 states have internal predecessors, (13211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 13211 transitions. [2024-11-08 18:25:55,540 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 13211 transitions. Word has length 103 [2024-11-08 18:25:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:55,540 INFO L471 AbstractCegarLoop]: Abstraction has 10270 states and 13211 transitions. [2024-11-08 18:25:55,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 13211 transitions. [2024-11-08 18:25:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:25:55,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:55,544 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:25:55,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:25:55,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 18:25:55,744 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:55,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash 687432479, now seen corresponding path program 1 times [2024-11-08 18:25:55,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:55,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450443748] [2024-11-08 18:25:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 18:25:57,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:57,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450443748] [2024-11-08 18:25:57,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450443748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:57,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114084565] [2024-11-08 18:25:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:57,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:57,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:57,405 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:57,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:25:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:57,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 18:25:57,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:59,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:26:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:26:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114084565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:26:04,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:26:04,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-08 18:26:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114317785] [2024-11-08 18:26:04,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:26:04,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 18:26:04,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:26:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 18:26:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 18:26:04,583 INFO L87 Difference]: Start difference. First operand 10270 states and 13211 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:26:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:26:20,135 INFO L93 Difference]: Finished difference Result 15968 states and 20080 transitions. [2024-11-08 18:26:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-08 18:26:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 18:26:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:26:20,147 INFO L225 Difference]: With dead ends: 15968 [2024-11-08 18:26:20,147 INFO L226 Difference]: Without dead ends: 10438 [2024-11-08 18:26:20,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=1975, Invalid=10907, Unknown=0, NotChecked=0, Total=12882 [2024-11-08 18:26:20,155 INFO L432 NwaCegarLoop]: 1509 mSDtfsCounter, 26037 mSDsluCounter, 29098 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26037 SdHoareTripleChecker+Valid, 30607 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:26:20,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26037 Valid, 30607 Invalid, 2104 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [114 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 18:26:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10438 states. [2024-11-08 18:26:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10438 to 9954. [2024-11-08 18:26:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9954 states, 9952 states have (on average 1.2900924437299035) internal successors, (12839), 9953 states have internal predecessors, (12839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:26:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9954 states to 9954 states and 12839 transitions. [2024-11-08 18:26:21,064 INFO L78 Accepts]: Start accepts. Automaton has 9954 states and 12839 transitions. Word has length 104 [2024-11-08 18:26:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:26:21,065 INFO L471 AbstractCegarLoop]: Abstraction has 9954 states and 12839 transitions. [2024-11-08 18:26:21,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:26:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9954 states and 12839 transitions. [2024-11-08 18:26:21,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:26:21,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:26:21,069 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:26:21,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 18:26:21,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 18:26:21,274 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:26:21,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:26:21,274 INFO L85 PathProgramCache]: Analyzing trace with hash -153643439, now seen corresponding path program 1 times [2024-11-08 18:26:21,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:26:21,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543155877] [2024-11-08 18:26:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:26:21,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:26:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:26:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:26:22,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:26:22,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543155877] [2024-11-08 18:26:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543155877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:26:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940450112] [2024-11-08 18:26:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:26:22,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:26:22,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:26:22,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:26:22,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:26:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:26:22,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 18:26:22,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:26:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:26:24,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:26:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:26:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940450112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:26:27,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:26:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2024-11-08 18:26:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760075450] [2024-11-08 18:26:27,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:26:27,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 18:26:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:26:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 18:26:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:26:27,823 INFO L87 Difference]: Start difference. First operand 9954 states and 12839 transitions. Second operand has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 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 18:26:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:26:36,094 INFO L93 Difference]: Finished difference Result 21336 states and 26713 transitions. [2024-11-08 18:26:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-08 18:26:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 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 104 [2024-11-08 18:26:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:26:36,107 INFO L225 Difference]: With dead ends: 21336 [2024-11-08 18:26:36,107 INFO L226 Difference]: Without dead ends: 14260 [2024-11-08 18:26:36,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1986, Invalid=8726, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 18:26:36,113 INFO L432 NwaCegarLoop]: 1623 mSDtfsCounter, 25647 mSDsluCounter, 12040 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25647 SdHoareTripleChecker+Valid, 13663 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:26:36,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25647 Valid, 13663 Invalid, 2211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 18:26:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14260 states. [2024-11-08 18:26:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14260 to 6134. [2024-11-08 18:26:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 6132 states have (on average 1.3377364644487932) internal successors, (8203), 6133 states have internal predecessors, (8203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:26:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 8203 transitions. [2024-11-08 18:26:36,552 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 8203 transitions. Word has length 104 [2024-11-08 18:26:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:26:36,552 INFO L471 AbstractCegarLoop]: Abstraction has 6134 states and 8203 transitions. [2024-11-08 18:26:36,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 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 18:26:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 8203 transitions. [2024-11-08 18:26:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:26:36,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:26:36,553 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:26:36,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 18:26:36,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 18:26:36,754 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:26:36,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:26:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1946781237, now seen corresponding path program 1 times [2024-11-08 18:26:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:26:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622699481] [2024-11-08 18:26:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:26:36,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:26:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:26:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:26:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:26:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622699481] [2024-11-08 18:26:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622699481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:26:38,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988904634] [2024-11-08 18:26:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:26:38,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:26:38,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:26:38,003 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:26:38,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 18:26:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:26:38,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 18:26:38,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:26:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:26:39,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:26:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:26:44,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988904634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:26:44,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:26:44,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 17] total 53 [2024-11-08 18:26:44,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790822058] [2024-11-08 18:26:44,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:26:44,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 18:26:44,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:26:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 18:26:44,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2526, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 18:26:44,027 INFO L87 Difference]: Start difference. First operand 6134 states and 8203 transitions. Second operand has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:27:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:27:48,841 INFO L93 Difference]: Finished difference Result 17177 states and 21380 transitions. [2024-11-08 18:27:48,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-11-08 18:27:48,842 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-08 18:27:48,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:27:48,856 INFO L225 Difference]: With dead ends: 17177 [2024-11-08 18:27:48,856 INFO L226 Difference]: Without dead ends: 15214 [2024-11-08 18:27:48,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24928 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=12162, Invalid=59930, Unknown=0, NotChecked=0, Total=72092 [2024-11-08 18:27:48,868 INFO L432 NwaCegarLoop]: 1601 mSDtfsCounter, 22201 mSDsluCounter, 37252 mSDsCounter, 0 mSdLazyCounter, 3357 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22201 SdHoareTripleChecker+Valid, 38853 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:27:48,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22201 Valid, 38853 Invalid, 3572 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [215 Valid, 3357 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 18:27:48,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15214 states. [2024-11-08 18:27:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15214 to 12084. [2024-11-08 18:27:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12084 states, 12082 states have (on average 1.2680019864260883) internal successors, (15320), 12083 states have internal predecessors, (15320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:27:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12084 states to 12084 states and 15320 transitions. [2024-11-08 18:27:50,388 INFO L78 Accepts]: Start accepts. Automaton has 12084 states and 15320 transitions. Word has length 105 [2024-11-08 18:27:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:27:50,389 INFO L471 AbstractCegarLoop]: Abstraction has 12084 states and 15320 transitions. [2024-11-08 18:27:50,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:27:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12084 states and 15320 transitions. [2024-11-08 18:27:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:27:50,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:27:50,391 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:27:50,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 18:27:50,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 18:27:50,592 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:27:50,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:27:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 369498781, now seen corresponding path program 1 times [2024-11-08 18:27:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:27:50,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492553671] [2024-11-08 18:27:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:27:50,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:27:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:27:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:27:52,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:27:52,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492553671] [2024-11-08 18:27:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492553671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:27:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517019107] [2024-11-08 18:27:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:27:52,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:27:52,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:27:52,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:27:52,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 18:27:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:27:52,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 18:27:52,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:28:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:00,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:28:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:12,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517019107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:28:12,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:28:12,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32, 27] total 76 [2024-11-08 18:28:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154739575] [2024-11-08 18:28:12,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:28:12,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-08 18:28:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-08 18:28:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=627, Invalid=5073, Unknown=0, NotChecked=0, Total=5700 [2024-11-08 18:28:12,849 INFO L87 Difference]: Start difference. First operand 12084 states and 15320 transitions. Second operand has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:29:02,109 INFO L93 Difference]: Finished difference Result 20090 states and 25094 transitions. [2024-11-08 18:29:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-11-08 18:29:02,110 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 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 105 [2024-11-08 18:29:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:29:02,123 INFO L225 Difference]: With dead ends: 20090 [2024-11-08 18:29:02,123 INFO L226 Difference]: Without dead ends: 15952 [2024-11-08 18:29:02,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12702 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=6924, Invalid=33276, Unknown=0, NotChecked=0, Total=40200 [2024-11-08 18:29:02,128 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 24236 mSDsluCounter, 27402 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24236 SdHoareTripleChecker+Valid, 28962 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:29:02,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24236 Valid, 28962 Invalid, 3680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-08 18:29:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15952 states. [2024-11-08 18:29:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15952 to 15181. [2024-11-08 18:29:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15181 states, 15179 states have (on average 1.2534422557480729) internal successors, (19026), 15180 states have internal predecessors, (19026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15181 states to 15181 states and 19026 transitions. [2024-11-08 18:29:03,907 INFO L78 Accepts]: Start accepts. Automaton has 15181 states and 19026 transitions. Word has length 105 [2024-11-08 18:29:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:29:03,907 INFO L471 AbstractCegarLoop]: Abstraction has 15181 states and 19026 transitions. [2024-11-08 18:29:03,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15181 states and 19026 transitions. [2024-11-08 18:29:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:29:03,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:29:03,910 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:29:03,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 18:29:04,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 18:29:04,111 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:29:04,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1021193557, now seen corresponding path program 1 times [2024-11-08 18:29:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858758414] [2024-11-08 18:29:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:29:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858758414] [2024-11-08 18:29:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858758414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:29:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139082811] [2024-11-08 18:29:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:05,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:05,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:29:05,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:29:05,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 18:29:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:05,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 18:29:05,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:29:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:29:08,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:29:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:29:13,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139082811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:29:13,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:29:13,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 21] total 59 [2024-11-08 18:29:13,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782138866] [2024-11-08 18:29:13,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:29:13,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 18:29:13,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 18:29:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3177, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:29:13,574 INFO L87 Difference]: Start difference. First operand 15181 states and 19026 transitions. Second operand has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:29:38,044 INFO L93 Difference]: Finished difference Result 31457 states and 38456 transitions. [2024-11-08 18:29:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-08 18:29:38,045 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 0 states have call successors, (0), 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 105 [2024-11-08 18:29:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:29:38,062 INFO L225 Difference]: With dead ends: 31457 [2024-11-08 18:29:38,062 INFO L226 Difference]: Without dead ends: 23596 [2024-11-08 18:29:38,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5470 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=3809, Invalid=18541, Unknown=0, NotChecked=0, Total=22350 [2024-11-08 18:29:38,070 INFO L432 NwaCegarLoop]: 1619 mSDtfsCounter, 22582 mSDsluCounter, 38418 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22582 SdHoareTripleChecker+Valid, 40037 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:29:38,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22582 Valid, 40037 Invalid, 3174 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [133 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 18:29:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23596 states. [2024-11-08 18:29:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23596 to 15203. [2024-11-08 18:29:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15203 states, 15201 states have (on average 1.2504440497335703) internal successors, (19008), 15202 states have internal predecessors, (19008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15203 states to 15203 states and 19008 transitions. [2024-11-08 18:29:39,894 INFO L78 Accepts]: Start accepts. Automaton has 15203 states and 19008 transitions. Word has length 105 [2024-11-08 18:29:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:29:39,894 INFO L471 AbstractCegarLoop]: Abstraction has 15203 states and 19008 transitions. [2024-11-08 18:29:39,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 15203 states and 19008 transitions. [2024-11-08 18:29:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 18:29:39,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:29:39,943 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:29:39,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 18:29:40,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:40,144 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:29:40,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1844025737, now seen corresponding path program 1 times [2024-11-08 18:29:40,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:40,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146000113] [2024-11-08 18:29:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:29:40,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146000113] [2024-11-08 18:29:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146000113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:29:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998924121] [2024-11-08 18:29:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:40,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:40,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:29:40,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:29:40,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 18:29:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:41,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 18:29:41,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:29:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:29:43,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:29:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:29:47,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998924121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:29:47,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:29:47,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-08 18:29:47,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716984496] [2024-11-08 18:29:47,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:29:47,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 18:29:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 18:29:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1689, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 18:29:47,296 INFO L87 Difference]: Start difference. First operand 15203 states and 19008 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:29:59,114 INFO L93 Difference]: Finished difference Result 39918 states and 48807 transitions. [2024-11-08 18:29:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-08 18:29:59,115 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-11-08 18:29:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:29:59,140 INFO L225 Difference]: With dead ends: 39918 [2024-11-08 18:29:59,141 INFO L226 Difference]: Without dead ends: 30281 [2024-11-08 18:29:59,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3957 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2529, Invalid=10811, Unknown=0, NotChecked=0, Total=13340 [2024-11-08 18:29:59,147 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 24714 mSDsluCounter, 21326 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24714 SdHoareTripleChecker+Valid, 22899 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:29:59,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24714 Valid, 22899 Invalid, 1884 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [94 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 18:29:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30281 states. [2024-11-08 18:30:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30281 to 22750. [2024-11-08 18:30:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22750 states, 22748 states have (on average 1.2368559873395464) internal successors, (28136), 22749 states have internal predecessors, (28136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22750 states to 22750 states and 28136 transitions. [2024-11-08 18:30:02,978 INFO L78 Accepts]: Start accepts. Automaton has 22750 states and 28136 transitions. Word has length 107 [2024-11-08 18:30:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:02,978 INFO L471 AbstractCegarLoop]: Abstraction has 22750 states and 28136 transitions. [2024-11-08 18:30:02,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 22750 states and 28136 transitions. [2024-11-08 18:30:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 18:30:02,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:02,981 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:03,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 18:30:03,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-08 18:30:03,186 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:30:03,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:03,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1412495529, now seen corresponding path program 1 times [2024-11-08 18:30:03,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:03,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421072962] [2024-11-08 18:30:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:03,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:04,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421072962] [2024-11-08 18:30:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421072962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900024133] [2024-11-08 18:30:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:04,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:04,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:04,288 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:04,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 18:30:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:04,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:30:04,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:06,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900024133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:08,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:08,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 40 [2024-11-08 18:30:08,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221606128] [2024-11-08 18:30:08,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:08,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 18:30:08,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:08,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 18:30:08,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 18:30:08,363 INFO L87 Difference]: Start difference. First operand 22750 states and 28136 transitions. Second operand has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:17,661 INFO L93 Difference]: Finished difference Result 50479 states and 61519 transitions. [2024-11-08 18:30:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 18:30:17,661 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 0 states have call successors, (0), 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 107 [2024-11-08 18:30:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:17,694 INFO L225 Difference]: With dead ends: 50479 [2024-11-08 18:30:17,694 INFO L226 Difference]: Without dead ends: 35186 [2024-11-08 18:30:17,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=972, Invalid=4140, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 18:30:17,704 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 22783 mSDsluCounter, 19364 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22783 SdHoareTripleChecker+Valid, 20935 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:17,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22783 Valid, 20935 Invalid, 1119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:30:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35186 states. [2024-11-08 18:30:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35186 to 28059. [2024-11-08 18:30:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28059 states, 28057 states have (on average 1.225362654596001) internal successors, (34380), 28058 states have internal predecessors, (34380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28059 states to 28059 states and 34380 transitions. [2024-11-08 18:30:23,290 INFO L78 Accepts]: Start accepts. Automaton has 28059 states and 34380 transitions. Word has length 107 [2024-11-08 18:30:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:23,290 INFO L471 AbstractCegarLoop]: Abstraction has 28059 states and 34380 transitions. [2024-11-08 18:30:23,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:23,291 INFO L276 IsEmpty]: Start isEmpty. Operand 28059 states and 34380 transitions. [2024-11-08 18:30:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 18:30:23,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:23,294 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:23,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 18:30:23,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 18:30:23,499 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:30:23,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash -558485559, now seen corresponding path program 1 times [2024-11-08 18:30:23,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:23,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029430935] [2024-11-08 18:30:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:23,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:26,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:26,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029430935] [2024-11-08 18:30:26,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029430935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:26,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769152276] [2024-11-08 18:30:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:26,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:26,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:26,479 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:26,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 18:30:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:26,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 18:30:26,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:33,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769152276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:43,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:43,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 23] total 77 [2024-11-08 18:30:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740314713] [2024-11-08 18:30:43,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:43,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-08 18:30:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:43,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-08 18:30:43,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=5434, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 18:30:43,339 INFO L87 Difference]: Start difference. First operand 28059 states and 34380 transitions. Second operand has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:32:27,289 INFO L93 Difference]: Finished difference Result 50616 states and 61295 transitions. [2024-11-08 18:32:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-11-08 18:32:27,289 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 0 states have call successors, (0), 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 107 [2024-11-08 18:32:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:32:27,337 INFO L225 Difference]: With dead ends: 50616 [2024-11-08 18:32:27,338 INFO L226 Difference]: Without dead ends: 33033 [2024-11-08 18:32:27,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23641 ImplicationChecksByTransitivity, 95.0s TimeCoverageRelationStatistics Valid=9158, Invalid=57664, Unknown=0, NotChecked=0, Total=66822 [2024-11-08 18:32:27,354 INFO L432 NwaCegarLoop]: 1638 mSDtfsCounter, 31440 mSDsluCounter, 42703 mSDsCounter, 0 mSdLazyCounter, 6218 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31440 SdHoareTripleChecker+Valid, 44341 SdHoareTripleChecker+Invalid, 6427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 6218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:32:27,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31440 Valid, 44341 Invalid, 6427 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [209 Valid, 6218 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-08 18:32:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33033 states. [2024-11-08 18:32:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33033 to 28354. [2024-11-08 18:32:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28354 states, 28352 states have (on average 1.2233704853273137) internal successors, (34685), 28353 states have internal predecessors, (34685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28354 states to 28354 states and 34685 transitions. [2024-11-08 18:32:33,737 INFO L78 Accepts]: Start accepts. Automaton has 28354 states and 34685 transitions. Word has length 107 [2024-11-08 18:32:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:32:33,737 INFO L471 AbstractCegarLoop]: Abstraction has 28354 states and 34685 transitions. [2024-11-08 18:32:33,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 28354 states and 34685 transitions. [2024-11-08 18:32:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-08 18:32:33,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:32:33,740 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:32:33,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 18:32:33,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:33,941 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:32:33,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1893802549, now seen corresponding path program 1 times [2024-11-08 18:32:33,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:33,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949104763] [2024-11-08 18:32:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:33,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:36,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949104763] [2024-11-08 18:32:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949104763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822461329] [2024-11-08 18:32:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:36,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:36,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:36,123 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:36,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 18:32:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:36,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 18:32:36,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:41,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:53,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822461329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:53,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:53,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 28] total 76 [2024-11-08 18:32:53,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774283338] [2024-11-08 18:32:53,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:53,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-08 18:32:53,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-08 18:32:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=5042, Unknown=0, NotChecked=0, Total=5700 [2024-11-08 18:32:53,539 INFO L87 Difference]: Start difference. First operand 28354 states and 34685 transitions. Second operand has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:34:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:34:15,171 INFO L93 Difference]: Finished difference Result 50377 states and 60977 transitions. [2024-11-08 18:34:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-08 18:34:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 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 108 [2024-11-08 18:34:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:34:15,207 INFO L225 Difference]: With dead ends: 50377 [2024-11-08 18:34:15,207 INFO L226 Difference]: Without dead ends: 33041 [2024-11-08 18:34:15,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18130 ImplicationChecksByTransitivity, 74.4s TimeCoverageRelationStatistics Valid=9606, Invalid=46326, Unknown=0, NotChecked=0, Total=55932 [2024-11-08 18:34:15,226 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 38357 mSDsluCounter, 36896 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38357 SdHoareTripleChecker+Valid, 38453 SdHoareTripleChecker+Invalid, 4467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:34:15,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38357 Valid, 38453 Invalid, 4467 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [209 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-08 18:34:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33041 states. [2024-11-08 18:34:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33041 to 27217. [2024-11-08 18:34:22,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27217 states, 27215 states have (on average 1.2257578541245637) internal successors, (33359), 27216 states have internal predecessors, (33359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:34:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27217 states to 27217 states and 33359 transitions. [2024-11-08 18:34:22,642 INFO L78 Accepts]: Start accepts. Automaton has 27217 states and 33359 transitions. Word has length 108 [2024-11-08 18:34:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:34:22,643 INFO L471 AbstractCegarLoop]: Abstraction has 27217 states and 33359 transitions. [2024-11-08 18:34:22,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:34:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 27217 states and 33359 transitions. [2024-11-08 18:34:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-08 18:34:22,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:34:22,644 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:34:22,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 18:34:22,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:34:22,845 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:34:22,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:34:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1430451345, now seen corresponding path program 1 times [2024-11-08 18:34:22,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:34:22,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816898249] [2024-11-08 18:34:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:34:22,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:34:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:34:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:34:25,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:34:25,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816898249] [2024-11-08 18:34:25,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816898249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:34:25,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503540474] [2024-11-08 18:34:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:34:25,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:34:25,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:34:25,613 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:34:25,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 18:34:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:34:25,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 18:34:25,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:34:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:34:30,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:34:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:34:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503540474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:34:39,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:34:39,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 26] total 75 [2024-11-08 18:34:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255093913] [2024-11-08 18:34:39,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:34:39,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-08 18:34:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:34:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-08 18:34:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=5136, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 18:34:39,238 INFO L87 Difference]: Start difference. First operand 27217 states and 33359 transitions. Second operand has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:26,324 INFO L93 Difference]: Finished difference Result 39147 states and 47587 transitions. [2024-11-08 18:36:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2024-11-08 18:36:26,325 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 0 states have call successors, (0), 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 108 [2024-11-08 18:36:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:26,356 INFO L225 Difference]: With dead ends: 39147 [2024-11-08 18:36:26,356 INFO L226 Difference]: Without dead ends: 30631 [2024-11-08 18:36:26,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21772 ImplicationChecksByTransitivity, 99.9s TimeCoverageRelationStatistics Valid=9343, Invalid=57997, Unknown=0, NotChecked=0, Total=67340 [2024-11-08 18:36:26,366 INFO L432 NwaCegarLoop]: 1564 mSDtfsCounter, 44219 mSDsluCounter, 38653 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44219 SdHoareTripleChecker+Valid, 40217 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:26,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44219 Valid, 40217 Invalid, 3830 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [230 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-08 18:36:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30631 states. [2024-11-08 18:36:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30631 to 27815. [2024-11-08 18:36:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27815 states, 27813 states have (on average 1.2236723834178262) internal successors, (34034), 27814 states have internal predecessors, (34034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27815 states to 27815 states and 34034 transitions. [2024-11-08 18:36:32,703 INFO L78 Accepts]: Start accepts. Automaton has 27815 states and 34034 transitions. Word has length 108 [2024-11-08 18:36:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:32,704 INFO L471 AbstractCegarLoop]: Abstraction has 27815 states and 34034 transitions. [2024-11-08 18:36:32,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 27815 states and 34034 transitions. [2024-11-08 18:36:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-08 18:36:32,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:32,706 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:36:32,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 18:36:32,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:32,911 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:32,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1329856941, now seen corresponding path program 1 times [2024-11-08 18:36:32,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:32,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360393441] [2024-11-08 18:36:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360393441] [2024-11-08 18:36:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360393441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934003719] [2024-11-08 18:36:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:35,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:35,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:35,672 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:35,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e084b58e-1a20-45ac-986c-95a4a4d415fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 18:36:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:35,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 18:36:35,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:44,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:50,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934003719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:50,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:50,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 73 [2024-11-08 18:36:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101512851] [2024-11-08 18:36:50,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:50,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-08 18:36:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-08 18:36:50,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4884, Unknown=0, NotChecked=0, Total=5256 [2024-11-08 18:36:50,624 INFO L87 Difference]: Start difference. First operand 27815 states and 34034 transitions. Second operand has 73 states, 73 states have (on average 4.232876712328767) internal successors, (309), 73 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)