./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu --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 9fba8bcd82b4a3fe57500a406293d5d51cfc2c8d1877a7a6552e09538ec18fb3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:58,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:59,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:50:59,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:59,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:59,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:59,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:59,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:59,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:59,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:59,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:59,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:59,074 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:59,077 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:59,077 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:59,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:59,078 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:59,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:59,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:59,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:59,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:59,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:59,081 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:59,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:59,083 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:59,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:59,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:59,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:59,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:59,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:59,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:59,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:59,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:59,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:59,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:59,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:59,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:59,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:59,089 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:59,089 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_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fba8bcd82b4a3fe57500a406293d5d51cfc2c8d1877a7a6552e09538ec18fb3 [2023-11-19 07:50:59,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:59,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:59,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:59,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:59,459 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:59,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-33.i [2023-11-19 07:51:02,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:51:02,930 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:51:02,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-33.i [2023-11-19 07:51:02,954 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/data/68ad2cc38/93e0f068650746d38b5b96b74e9db412/FLAG770034f64 [2023-11-19 07:51:02,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/data/68ad2cc38/93e0f068650746d38b5b96b74e9db412 [2023-11-19 07:51:02,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:51:02,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:51:02,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:02,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:51:02,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:51:02,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:02" (1/1) ... [2023-11-19 07:51:02,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a46fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:02, skipping insertion in model container [2023-11-19 07:51:02,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:02" (1/1) ... [2023-11-19 07:51:03,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:51:03,233 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-33.i[917,930] [2023-11-19 07:51:03,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:03,327 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:51:03,340 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-33.i[917,930] [2023-11-19 07:51:03,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:03,400 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:51:03,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03 WrapperNode [2023-11-19 07:51:03,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:03,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:51:03,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:51:03,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:51:03,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,479 INFO L138 Inliner]: procedures = 29, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 440 [2023-11-19 07:51:03,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:51:03,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:51:03,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:51:03,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:51:03,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:51:03,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:51:03,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:51:03,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:51:03,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (1/1) ... [2023-11-19 07:51:03,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:51:03,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:03,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:51:03,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:51:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:51:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:51:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:51:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:51:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:51:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:51:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:51:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:51:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:51:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:51:03,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:51:03,821 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:51:03,823 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:51:04,497 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:51:04,508 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:51:04,508 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:51:04,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:04 BoogieIcfgContainer [2023-11-19 07:51:04,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:51:04,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:51:04,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:51:04,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:51:04,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:02" (1/3) ... [2023-11-19 07:51:04,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d29e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:04, skipping insertion in model container [2023-11-19 07:51:04,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:03" (2/3) ... [2023-11-19 07:51:04,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d29e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:04, skipping insertion in model container [2023-11-19 07:51:04,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:04" (3/3) ... [2023-11-19 07:51:04,522 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-33.i [2023-11-19 07:51:04,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:51:04,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:51:04,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:51:04,618 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58b6191b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:51:04,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:51:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 89 states have (on average 1.5056179775280898) internal successors, (134), 90 states have internal predecessors, (134), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:51:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:51:04,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:04,638 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:04,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:04,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash -261452828, now seen corresponding path program 1 times [2023-11-19 07:51:04,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:04,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480826869] [2023-11-19 07:51:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:04,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:04,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:05,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480826869] [2023-11-19 07:51:05,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480826869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:05,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:51:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026223171] [2023-11-19 07:51:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:05,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:51:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:51:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:51:05,083 INFO L87 Difference]: Start difference. First operand has 101 states, 89 states have (on average 1.5056179775280898) internal successors, (134), 90 states have internal predecessors, (134), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:05,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:05,122 INFO L93 Difference]: Finished difference Result 195 states and 307 transitions. [2023-11-19 07:51:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:51:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2023-11-19 07:51:05,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:05,133 INFO L225 Difference]: With dead ends: 195 [2023-11-19 07:51:05,133 INFO L226 Difference]: Without dead ends: 97 [2023-11-19 07:51:05,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:51:05,141 INFO L413 NwaCegarLoop]: 145 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, 145 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 [2023-11-19 07:51:05,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:51:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-19 07:51:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-19 07:51:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 86 states have internal predecessors, (127), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:51:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 145 transitions. [2023-11-19 07:51:05,196 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 145 transitions. Word has length 98 [2023-11-19 07:51:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 145 transitions. [2023-11-19 07:51:05,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 145 transitions. [2023-11-19 07:51:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:51:05,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:05,202 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:05,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:51:05,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:05,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:05,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1943487078, now seen corresponding path program 1 times [2023-11-19 07:51:05,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:05,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486865836] [2023-11-19 07:51:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486865836] [2023-11-19 07:51:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486865836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:51:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922056663] [2023-11-19 07:51:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:05,619 INFO L87 Difference]: Start difference. First operand 97 states and 145 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:05,686 INFO L93 Difference]: Finished difference Result 199 states and 298 transitions. [2023-11-19 07:51:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:51:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 98 [2023-11-19 07:51:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:05,691 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:51:05,692 INFO L226 Difference]: Without dead ends: 105 [2023-11-19 07:51:05,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:05,697 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 12 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:05,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 419 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:51:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-19 07:51:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2023-11-19 07:51:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 88 states have internal predecessors, (129), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:51:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 147 transitions. [2023-11-19 07:51:05,712 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 147 transitions. Word has length 98 [2023-11-19 07:51:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:05,714 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 147 transitions. [2023-11-19 07:51:05,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 147 transitions. [2023-11-19 07:51:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:51:05,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:05,717 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:51:05,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:05,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash -576472856, now seen corresponding path program 1 times [2023-11-19 07:51:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:05,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527909241] [2023-11-19 07:51:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:05,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:06,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:06,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527909241] [2023-11-19 07:51:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527909241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:06,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:06,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:51:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710325713] [2023-11-19 07:51:06,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:06,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:51:06,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:51:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:06,259 INFO L87 Difference]: Start difference. First operand 99 states and 147 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:06,498 INFO L93 Difference]: Finished difference Result 270 states and 404 transitions. [2023-11-19 07:51:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:51:06,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 98 [2023-11-19 07:51:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:06,501 INFO L225 Difference]: With dead ends: 270 [2023-11-19 07:51:06,501 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 07:51:06,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:51:06,504 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 110 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:06,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 537 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:51:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 07:51:06,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 113. [2023-11-19 07:51:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 102 states have (on average 1.4901960784313726) internal successors, (152), 102 states have internal predecessors, (152), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:51:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 170 transitions. [2023-11-19 07:51:06,519 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 170 transitions. Word has length 98 [2023-11-19 07:51:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:06,519 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 170 transitions. [2023-11-19 07:51:06,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 170 transitions. [2023-11-19 07:51:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:51:06,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:06,522 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:06,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:51:06,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:06,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1856336534, now seen corresponding path program 1 times [2023-11-19 07:51:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211645912] [2023-11-19 07:51:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211645912] [2023-11-19 07:51:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211645912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:07,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:07,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:51:07,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183389202] [2023-11-19 07:51:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:07,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:51:07,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:51:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:07,563 INFO L87 Difference]: Start difference. First operand 113 states and 170 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:07,991 INFO L93 Difference]: Finished difference Result 270 states and 406 transitions. [2023-11-19 07:51:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:51:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 98 [2023-11-19 07:51:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:07,995 INFO L225 Difference]: With dead ends: 270 [2023-11-19 07:51:07,995 INFO L226 Difference]: Without dead ends: 160 [2023-11-19 07:51:07,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:51:07,998 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 206 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:07,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 647 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:51:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-19 07:51:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 115. [2023-11-19 07:51:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 104 states have internal predecessors, (154), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:51:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2023-11-19 07:51:08,014 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 98 [2023-11-19 07:51:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:08,015 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2023-11-19 07:51:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2023-11-19 07:51:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:51:08,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:08,018 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:08,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:51:08,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:08,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1913056106, now seen corresponding path program 1 times [2023-11-19 07:51:08,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:08,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612655467] [2023-11-19 07:51:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:08,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:09,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612655467] [2023-11-19 07:51:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612655467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:51:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567362699] [2023-11-19 07:51:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:51:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:51:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:51:09,247 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:09,689 INFO L93 Difference]: Finished difference Result 298 states and 446 transitions. [2023-11-19 07:51:09,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:51:09,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2023-11-19 07:51:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:09,692 INFO L225 Difference]: With dead ends: 298 [2023-11-19 07:51:09,692 INFO L226 Difference]: Without dead ends: 186 [2023-11-19 07:51:09,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:51:09,694 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 712 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:09,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 332 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:51:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-19 07:51:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 121. [2023-11-19 07:51:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 110 states have (on average 1.481818181818182) internal successors, (163), 110 states have internal predecessors, (163), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:51:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 181 transitions. [2023-11-19 07:51:09,711 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 181 transitions. Word has length 98 [2023-11-19 07:51:09,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:09,711 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 181 transitions. [2023-11-19 07:51:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 181 transitions. [2023-11-19 07:51:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:51:09,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:09,714 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:09,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:51:09,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:09,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash 633192428, now seen corresponding path program 1 times [2023-11-19 07:51:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:09,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616807617] [2023-11-19 07:51:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-19 07:51:11,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:11,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616807617] [2023-11-19 07:51:11,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616807617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:51:11,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836020959] [2023-11-19 07:51:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:11,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:11,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:11,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:51:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:51:11,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:11,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-11-19 07:51:12,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-11-19 07:51:12,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-11-19 07:51:12,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-11-19 07:51:12,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-11-19 07:51:13,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:51:13,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-19 07:51:13,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:51:13,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-11-19 07:51:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 07:51:13,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:13,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836020959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:51:13,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:51:13,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-11-19 07:51:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19869412] [2023-11-19 07:51:13,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:51:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:51:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:13,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:51:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:51:13,395 INFO L87 Difference]: Start difference. First operand 121 states and 181 transitions. Second operand has 18 states, 16 states have (on average 5.8125) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-19 07:51:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:14,423 INFO L93 Difference]: Finished difference Result 291 states and 430 transitions. [2023-11-19 07:51:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:51:14,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.8125) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) Word has length 98 [2023-11-19 07:51:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:14,430 INFO L225 Difference]: With dead ends: 291 [2023-11-19 07:51:14,431 INFO L226 Difference]: Without dead ends: 173 [2023-11-19 07:51:14,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:51:14,433 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 125 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:14,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1093 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:51:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-19 07:51:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 166. [2023-11-19 07:51:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:51:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 242 transitions. [2023-11-19 07:51:14,484 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 242 transitions. Word has length 98 [2023-11-19 07:51:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:14,485 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 242 transitions. [2023-11-19 07:51:14,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.8125) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-19 07:51:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 242 transitions. [2023-11-19 07:51:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:51:14,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:14,488 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:14,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_049cab11-89af-4571-9eaa-de91a26b1208/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:51:14,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:14,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2019395822, now seen corresponding path program 1 times [2023-11-19 07:51:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697105918] [2023-11-19 07:51:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:17,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697105918] [2023-11-19 07:51:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697105918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:17,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:17,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:51:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477644596] [2023-11-19 07:51:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:51:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:51:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:51:17,716 INFO L87 Difference]: Start difference. First operand 166 states and 242 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:18,506 INFO L93 Difference]: Finished difference Result 463 states and 685 transitions. [2023-11-19 07:51:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:51:18,507 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2023-11-19 07:51:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:18,511 INFO L225 Difference]: With dead ends: 463 [2023-11-19 07:51:18,511 INFO L226 Difference]: Without dead ends: 345 [2023-11-19 07:51:18,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:51:18,514 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 622 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:18,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 606 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:51:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-19 07:51:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 278. [2023-11-19 07:51:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 246 states have (on average 1.451219512195122) internal successors, (357), 246 states have internal predecessors, (357), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 411 transitions. [2023-11-19 07:51:18,571 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 411 transitions. Word has length 98 [2023-11-19 07:51:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:18,573 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 411 transitions. [2023-11-19 07:51:18,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 411 transitions. [2023-11-19 07:51:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 07:51:18,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:18,578 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:18,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:51:18,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:18,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:18,579 INFO L85 PathProgramCache]: Analyzing trace with hash -625265894, now seen corresponding path program 1 times [2023-11-19 07:51:18,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:18,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286819269] [2023-11-19 07:51:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286819269] [2023-11-19 07:51:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286819269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:18,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:18,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:51:18,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395886710] [2023-11-19 07:51:18,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:51:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:51:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:18,915 INFO L87 Difference]: Start difference. First operand 278 states and 411 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:19,236 INFO L93 Difference]: Finished difference Result 664 states and 984 transitions. [2023-11-19 07:51:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:51:19,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 99 [2023-11-19 07:51:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:19,243 INFO L225 Difference]: With dead ends: 664 [2023-11-19 07:51:19,244 INFO L226 Difference]: Without dead ends: 434 [2023-11-19 07:51:19,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:51:19,248 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 262 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:19,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 558 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:51:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-19 07:51:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 298. [2023-11-19 07:51:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 266 states have (on average 1.4548872180451127) internal successors, (387), 266 states have internal predecessors, (387), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 441 transitions. [2023-11-19 07:51:19,318 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 441 transitions. Word has length 99 [2023-11-19 07:51:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:19,319 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 441 transitions. [2023-11-19 07:51:19,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 441 transitions. [2023-11-19 07:51:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 07:51:19,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:19,321 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:19,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:51:19,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:19,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:19,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1688483460, now seen corresponding path program 1 times [2023-11-19 07:51:19,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:19,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836591883] [2023-11-19 07:51:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:19,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:19,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:19,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836591883] [2023-11-19 07:51:19,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836591883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:19,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:19,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:51:19,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988358745] [2023-11-19 07:51:19,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:19,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:51:19,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:51:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:19,673 INFO L87 Difference]: Start difference. First operand 298 states and 441 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:19,990 INFO L93 Difference]: Finished difference Result 651 states and 966 transitions. [2023-11-19 07:51:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:51:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 99 [2023-11-19 07:51:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:19,994 INFO L225 Difference]: With dead ends: 651 [2023-11-19 07:51:19,994 INFO L226 Difference]: Without dead ends: 401 [2023-11-19 07:51:19,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:51:19,998 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 344 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:19,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 533 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:51:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-19 07:51:20,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 298. [2023-11-19 07:51:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 266 states have (on average 1.4398496240601504) internal successors, (383), 266 states have internal predecessors, (383), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 437 transitions. [2023-11-19 07:51:20,046 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 437 transitions. Word has length 99 [2023-11-19 07:51:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:20,047 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 437 transitions. [2023-11-19 07:51:20,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 437 transitions. [2023-11-19 07:51:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:51:20,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:20,049 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:51:20,050 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:20,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1556454055, now seen corresponding path program 1 times [2023-11-19 07:51:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968336019] [2023-11-19 07:51:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:20,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:20,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968336019] [2023-11-19 07:51:20,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968336019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:20,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:20,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:20,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227070931] [2023-11-19 07:51:20,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:20,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:20,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:20,175 INFO L87 Difference]: Start difference. First operand 298 states and 437 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:20,222 INFO L93 Difference]: Finished difference Result 432 states and 640 transitions. [2023-11-19 07:51:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:51:20,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 100 [2023-11-19 07:51:20,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:20,226 INFO L225 Difference]: With dead ends: 432 [2023-11-19 07:51:20,226 INFO L226 Difference]: Without dead ends: 304 [2023-11-19 07:51:20,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:20,228 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:20,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:51:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-19 07:51:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-11-19 07:51:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 272 states have (on average 1.4301470588235294) internal successors, (389), 272 states have internal predecessors, (389), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 443 transitions. [2023-11-19 07:51:20,281 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 443 transitions. Word has length 100 [2023-11-19 07:51:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:20,282 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 443 transitions. [2023-11-19 07:51:20,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 443 transitions. [2023-11-19 07:51:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:51:20,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:20,284 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:20,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:51:20,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:20,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1017987287, now seen corresponding path program 1 times [2023-11-19 07:51:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935631117] [2023-11-19 07:51:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:22,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:22,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935631117] [2023-11-19 07:51:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935631117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:22,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:22,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:51:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644030905] [2023-11-19 07:51:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:22,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:51:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:51:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:51:22,126 INFO L87 Difference]: Start difference. First operand 304 states and 443 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:22,795 INFO L93 Difference]: Finished difference Result 717 states and 1057 transitions. [2023-11-19 07:51:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:51:22,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2023-11-19 07:51:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:22,799 INFO L225 Difference]: With dead ends: 717 [2023-11-19 07:51:22,800 INFO L226 Difference]: Without dead ends: 461 [2023-11-19 07:51:22,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:51:22,801 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 624 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:22,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 576 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:51:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-19 07:51:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 359. [2023-11-19 07:51:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 327 states have (on average 1.4403669724770642) internal successors, (471), 327 states have internal predecessors, (471), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 525 transitions. [2023-11-19 07:51:22,858 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 525 transitions. Word has length 100 [2023-11-19 07:51:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:22,859 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 525 transitions. [2023-11-19 07:51:22,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 525 transitions. [2023-11-19 07:51:22,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:51:22,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:22,861 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:22,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:51:22,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:22,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2029104537, now seen corresponding path program 1 times [2023-11-19 07:51:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:22,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010130668] [2023-11-19 07:51:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:23,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:23,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010130668] [2023-11-19 07:51:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010130668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:23,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:51:23,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690059708] [2023-11-19 07:51:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:23,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:51:23,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:51:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:23,056 INFO L87 Difference]: Start difference. First operand 359 states and 525 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:23,137 INFO L93 Difference]: Finished difference Result 717 states and 1057 transitions. [2023-11-19 07:51:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:51:23,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 100 [2023-11-19 07:51:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:23,141 INFO L225 Difference]: With dead ends: 717 [2023-11-19 07:51:23,141 INFO L226 Difference]: Without dead ends: 406 [2023-11-19 07:51:23,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:23,143 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 92 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:23,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 569 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:51:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-19 07:51:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 364. [2023-11-19 07:51:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 332 states have (on average 1.4337349397590362) internal successors, (476), 332 states have internal predecessors, (476), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 530 transitions. [2023-11-19 07:51:23,206 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 530 transitions. Word has length 100 [2023-11-19 07:51:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:23,207 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 530 transitions. [2023-11-19 07:51:23,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 530 transitions. [2023-11-19 07:51:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:51:23,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:23,209 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:23,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:51:23,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:23,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash -885270322, now seen corresponding path program 1 times [2023-11-19 07:51:23,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269001149] [2023-11-19 07:51:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:24,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269001149] [2023-11-19 07:51:24,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269001149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:24,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:24,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 07:51:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127642789] [2023-11-19 07:51:24,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:24,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:51:24,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:51:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:51:24,061 INFO L87 Difference]: Start difference. First operand 364 states and 530 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:25,735 INFO L93 Difference]: Finished difference Result 1141 states and 1657 transitions. [2023-11-19 07:51:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:51:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 100 [2023-11-19 07:51:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:25,741 INFO L225 Difference]: With dead ends: 1141 [2023-11-19 07:51:25,742 INFO L226 Difference]: Without dead ends: 825 [2023-11-19 07:51:25,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 07:51:25,744 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 654 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:25,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1691 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:51:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-11-19 07:51:25,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 412. [2023-11-19 07:51:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 380 states have (on average 1.4421052631578948) internal successors, (548), 380 states have internal predecessors, (548), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 602 transitions. [2023-11-19 07:51:25,801 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 602 transitions. Word has length 100 [2023-11-19 07:51:25,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:25,802 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 602 transitions. [2023-11-19 07:51:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 602 transitions. [2023-11-19 07:51:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:51:25,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:25,804 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:25,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:51:25,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:25,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash 260579850, now seen corresponding path program 1 times [2023-11-19 07:51:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269946836] [2023-11-19 07:51:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:25,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:26,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:26,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269946836] [2023-11-19 07:51:26,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269946836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:26,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:26,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-19 07:51:26,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977673467] [2023-11-19 07:51:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:26,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:51:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:26,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:51:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:51:26,617 INFO L87 Difference]: Start difference. First operand 412 states and 602 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:27,729 INFO L93 Difference]: Finished difference Result 1452 states and 2126 transitions. [2023-11-19 07:51:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:51:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 100 [2023-11-19 07:51:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:27,737 INFO L225 Difference]: With dead ends: 1452 [2023-11-19 07:51:27,737 INFO L226 Difference]: Without dead ends: 1082 [2023-11-19 07:51:27,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:51:27,740 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 902 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:27,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1127 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:51:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-11-19 07:51:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 534. [2023-11-19 07:51:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 502 states have (on average 1.4760956175298805) internal successors, (741), 502 states have internal predecessors, (741), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 795 transitions. [2023-11-19 07:51:27,798 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 795 transitions. Word has length 100 [2023-11-19 07:51:27,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:27,798 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 795 transitions. [2023-11-19 07:51:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 795 transitions. [2023-11-19 07:51:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:51:27,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:27,801 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:51:27,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:27,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1318282596, now seen corresponding path program 1 times [2023-11-19 07:51:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116152927] [2023-11-19 07:51:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:28,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:28,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116152927] [2023-11-19 07:51:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116152927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:51:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122741051] [2023-11-19 07:51:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:51:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:51:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:51:28,130 INFO L87 Difference]: Start difference. First operand 534 states and 795 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:28,477 INFO L93 Difference]: Finished difference Result 1114 states and 1660 transitions. [2023-11-19 07:51:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:51:28,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 101 [2023-11-19 07:51:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:28,482 INFO L225 Difference]: With dead ends: 1114 [2023-11-19 07:51:28,482 INFO L226 Difference]: Without dead ends: 628 [2023-11-19 07:51:28,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:51:28,486 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 257 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:28,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 555 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:51:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-11-19 07:51:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 528. [2023-11-19 07:51:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 496 states have (on average 1.4637096774193548) internal successors, (726), 496 states have internal predecessors, (726), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 780 transitions. [2023-11-19 07:51:28,540 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 780 transitions. Word has length 101 [2023-11-19 07:51:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:28,541 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 780 transitions. [2023-11-19 07:51:28,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 780 transitions. [2023-11-19 07:51:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:51:28,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:28,544 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:28,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:51:28,544 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:28,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash -872233533, now seen corresponding path program 1 times [2023-11-19 07:51:28,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:28,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206814999] [2023-11-19 07:51:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:28,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:29,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:29,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206814999] [2023-11-19 07:51:29,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206814999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:29,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:29,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:51:29,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451814029] [2023-11-19 07:51:29,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:29,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:51:29,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:29,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:51:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:51:29,309 INFO L87 Difference]: Start difference. First operand 528 states and 780 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:30,246 INFO L93 Difference]: Finished difference Result 1218 states and 1783 transitions. [2023-11-19 07:51:30,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:51:30,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 101 [2023-11-19 07:51:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:30,251 INFO L225 Difference]: With dead ends: 1218 [2023-11-19 07:51:30,251 INFO L226 Difference]: Without dead ends: 711 [2023-11-19 07:51:30,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:51:30,254 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 625 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:30,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1066 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:51:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-19 07:51:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 478. [2023-11-19 07:51:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 446 states have (on average 1.4439461883408071) internal successors, (644), 446 states have internal predecessors, (644), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 698 transitions. [2023-11-19 07:51:30,310 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 698 transitions. Word has length 101 [2023-11-19 07:51:30,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:30,310 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 698 transitions. [2023-11-19 07:51:30,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 698 transitions. [2023-11-19 07:51:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:51:30,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:30,312 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:30,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:51:30,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:30,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1023526477, now seen corresponding path program 1 times [2023-11-19 07:51:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51991158] [2023-11-19 07:51:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:31,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51991158] [2023-11-19 07:51:31,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51991158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:31,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:31,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 07:51:31,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098158553] [2023-11-19 07:51:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:31,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:51:31,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:31,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:51:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:51:31,029 INFO L87 Difference]: Start difference. First operand 478 states and 698 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:32,072 INFO L93 Difference]: Finished difference Result 1296 states and 1896 transitions. [2023-11-19 07:51:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:51:32,073 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 101 [2023-11-19 07:51:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:32,079 INFO L225 Difference]: With dead ends: 1296 [2023-11-19 07:51:32,079 INFO L226 Difference]: Without dead ends: 860 [2023-11-19 07:51:32,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:51:32,084 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 411 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:32,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1467 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:51:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-19 07:51:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 502. [2023-11-19 07:51:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 470 states have (on average 1.4404255319148935) internal successors, (677), 470 states have internal predecessors, (677), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 731 transitions. [2023-11-19 07:51:32,137 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 731 transitions. Word has length 101 [2023-11-19 07:51:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:32,138 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 731 transitions. [2023-11-19 07:51:32,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 731 transitions. [2023-11-19 07:51:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:51:32,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:32,140 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:32,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:51:32,140 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:32,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1851028531, now seen corresponding path program 1 times [2023-11-19 07:51:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805913685] [2023-11-19 07:51:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:32,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:32,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805913685] [2023-11-19 07:51:32,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805913685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:32,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:32,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-19 07:51:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828080623] [2023-11-19 07:51:32,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:32,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:51:32,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:51:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:51:32,989 INFO L87 Difference]: Start difference. First operand 502 states and 731 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:34,149 INFO L93 Difference]: Finished difference Result 1440 states and 2075 transitions. [2023-11-19 07:51:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:51:34,149 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 101 [2023-11-19 07:51:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:34,156 INFO L225 Difference]: With dead ends: 1440 [2023-11-19 07:51:34,156 INFO L226 Difference]: Without dead ends: 980 [2023-11-19 07:51:34,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:51:34,158 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 610 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:34,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1357 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:51:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-11-19 07:51:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 550. [2023-11-19 07:51:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 518 states have (on average 1.4401544401544402) internal successors, (746), 518 states have internal predecessors, (746), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 800 transitions. [2023-11-19 07:51:34,214 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 800 transitions. Word has length 101 [2023-11-19 07:51:34,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:34,218 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 800 transitions. [2023-11-19 07:51:34,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:34,218 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 800 transitions. [2023-11-19 07:51:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:51:34,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:34,220 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:34,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:51:34,221 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:34,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1428326705, now seen corresponding path program 1 times [2023-11-19 07:51:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813985998] [2023-11-19 07:51:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:35,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:35,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813985998] [2023-11-19 07:51:35,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813985998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:35,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:35,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 07:51:35,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607249015] [2023-11-19 07:51:35,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:35,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:51:35,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:51:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:51:35,004 INFO L87 Difference]: Start difference. First operand 550 states and 800 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:36,081 INFO L93 Difference]: Finished difference Result 1437 states and 2101 transitions. [2023-11-19 07:51:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:51:36,082 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2023-11-19 07:51:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:36,088 INFO L225 Difference]: With dead ends: 1437 [2023-11-19 07:51:36,089 INFO L226 Difference]: Without dead ends: 935 [2023-11-19 07:51:36,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:51:36,091 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 450 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:36,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1055 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:51:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2023-11-19 07:51:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 580. [2023-11-19 07:51:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 548 states have (on average 1.4543795620437956) internal successors, (797), 548 states have internal predecessors, (797), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 851 transitions. [2023-11-19 07:51:36,173 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 851 transitions. Word has length 101 [2023-11-19 07:51:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:36,174 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 851 transitions. [2023-11-19 07:51:36,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:51:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 851 transitions. [2023-11-19 07:51:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:51:36,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:36,176 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:36,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:51:36,176 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:36,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1829074908, now seen corresponding path program 1 times [2023-11-19 07:51:36,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:36,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125484869] [2023-11-19 07:51:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:36,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:37,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125484869] [2023-11-19 07:51:37,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125484869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:37,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:37,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-19 07:51:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897915925] [2023-11-19 07:51:37,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:37,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:51:37,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:51:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:51:37,246 INFO L87 Difference]: Start difference. First operand 580 states and 851 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:38,708 INFO L93 Difference]: Finished difference Result 1465 states and 2144 transitions. [2023-11-19 07:51:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:51:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2023-11-19 07:51:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:38,717 INFO L225 Difference]: With dead ends: 1465 [2023-11-19 07:51:38,717 INFO L226 Difference]: Without dead ends: 933 [2023-11-19 07:51:38,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:51:38,720 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 425 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:38,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1911 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:51:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-11-19 07:51:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 565. [2023-11-19 07:51:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 533 states have (on average 1.4559099437148217) internal successors, (776), 533 states have internal predecessors, (776), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 830 transitions. [2023-11-19 07:51:38,778 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 830 transitions. Word has length 102 [2023-11-19 07:51:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:38,778 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 830 transitions. [2023-11-19 07:51:38,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 830 transitions. [2023-11-19 07:51:38,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:51:38,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:38,782 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:38,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:51:38,782 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:38,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1925634220, now seen corresponding path program 1 times [2023-11-19 07:51:38,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:38,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109732050] [2023-11-19 07:51:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:38,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:39,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:39,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109732050] [2023-11-19 07:51:39,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109732050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:39,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:39,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:51:39,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554637119] [2023-11-19 07:51:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:39,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:51:39,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:51:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:39,051 INFO L87 Difference]: Start difference. First operand 565 states and 830 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:39,328 INFO L93 Difference]: Finished difference Result 1117 states and 1624 transitions. [2023-11-19 07:51:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:51:39,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2023-11-19 07:51:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:39,333 INFO L225 Difference]: With dead ends: 1117 [2023-11-19 07:51:39,334 INFO L226 Difference]: Without dead ends: 794 [2023-11-19 07:51:39,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:51:39,335 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 341 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 454 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:51:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-11-19 07:51:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 565. [2023-11-19 07:51:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 533 states have (on average 1.4540337711069418) internal successors, (775), 533 states have internal predecessors, (775), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 829 transitions. [2023-11-19 07:51:39,385 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 829 transitions. Word has length 102 [2023-11-19 07:51:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:39,385 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 829 transitions. [2023-11-19 07:51:39,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 829 transitions. [2023-11-19 07:51:39,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:51:39,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:39,387 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:39,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:51:39,388 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:39,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1610220190, now seen corresponding path program 1 times [2023-11-19 07:51:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:39,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210413738] [2023-11-19 07:51:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:40,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210413738] [2023-11-19 07:51:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210413738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:40,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:40,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:51:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415275980] [2023-11-19 07:51:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:40,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:51:40,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:40,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:51:40,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:51:40,022 INFO L87 Difference]: Start difference. First operand 565 states and 829 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:40,574 INFO L93 Difference]: Finished difference Result 1167 states and 1725 transitions. [2023-11-19 07:51:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:51:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2023-11-19 07:51:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:40,584 INFO L225 Difference]: With dead ends: 1167 [2023-11-19 07:51:40,584 INFO L226 Difference]: Without dead ends: 650 [2023-11-19 07:51:40,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:51:40,587 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 218 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:40,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 821 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:51:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-19 07:51:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 505. [2023-11-19 07:51:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 473 states have (on average 1.4482029598308668) internal successors, (685), 473 states have internal predecessors, (685), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 739 transitions. [2023-11-19 07:51:40,645 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 739 transitions. Word has length 102 [2023-11-19 07:51:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:40,645 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 739 transitions. [2023-11-19 07:51:40,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 739 transitions. [2023-11-19 07:51:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:51:40,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:40,647 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:51:40,648 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:40,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash -487171616, now seen corresponding path program 1 times [2023-11-19 07:51:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:40,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106144959] [2023-11-19 07:51:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:40,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:51:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:51:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:51:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:51:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:51:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:51:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:51:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:51:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:51:41,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106144959] [2023-11-19 07:51:41,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106144959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:41,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:41,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 07:51:41,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376459036] [2023-11-19 07:51:41,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:41,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:51:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:41,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:51:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:51:41,370 INFO L87 Difference]: Start difference. First operand 505 states and 739 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:42,482 INFO L93 Difference]: Finished difference Result 1267 states and 1851 transitions. [2023-11-19 07:51:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:51:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2023-11-19 07:51:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:42,488 INFO L225 Difference]: With dead ends: 1267 [2023-11-19 07:51:42,488 INFO L226 Difference]: Without dead ends: 810 [2023-11-19 07:51:42,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:51:42,490 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 435 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:42,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1557 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:51:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-11-19 07:51:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 511. [2023-11-19 07:51:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 479 states have (on average 1.4551148225469728) internal successors, (697), 479 states have internal predecessors, (697), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:51:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 751 transitions. [2023-11-19 07:51:42,548 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 751 transitions. Word has length 102 [2023-11-19 07:51:42,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:42,549 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 751 transitions. [2023-11-19 07:51:42,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 07:51:42,549 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 751 transitions. [2023-11-19 07:51:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:51:42,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:42,550 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:42,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:51:42,551 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:42,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:42,551 INFO L85 PathProgramCache]: Analyzing trace with hash -268316898, now seen corresponding path program 1 times [2023-11-19 07:51:42,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:42,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705539268] [2023-11-19 07:51:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat