./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/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_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/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_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/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 7f21ea595eac4353ca417fd812da6cdd2e6031060e3844060c8f8fe5fbe20b17 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:31,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:31,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:31,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:31,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:31,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:31,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:31,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:31,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:31,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:31,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:31,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:31,735 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:31,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:31,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:31,737 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:31,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:31,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:31,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:31,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:31,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:31,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:31,744 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:31,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:31,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:31,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:31,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:31,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:31,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:31,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:31,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:31,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:31,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:31,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:31,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:31,757 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:31,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:31,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:31,758 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:31,759 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_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f21ea595eac4353ca417fd812da6cdd2e6031060e3844060c8f8fe5fbe20b17 [2023-11-19 07:47:32,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:32,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:32,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:32,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:32,094 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:32,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-11-19 07:47:35,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:35,814 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:35,815 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-11-19 07:47:35,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/data/1e4307506/312fafa7582743eb8167322c370530cb/FLAG2487280b1 [2023-11-19 07:47:35,881 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/data/1e4307506/312fafa7582743eb8167322c370530cb [2023-11-19 07:47:35,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:35,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:35,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:35,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:35,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:35,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5d0879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35, skipping insertion in model container [2023-11-19 07:47:35,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:36,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:36,541 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_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[20454,20467] [2023-11-19 07:47:36,592 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_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[23961,23974] [2023-11-19 07:47:37,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:37,665 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:37,734 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_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[20454,20467] [2023-11-19 07:47:37,742 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_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[23961,23974] [2023-11-19 07:47:38,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:38,406 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:38,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38 WrapperNode [2023-11-19 07:47:38,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:38,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:38,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:38,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:38,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:38,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:38,903 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2023-11-19 07:47:38,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:38,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:38,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:38,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:38,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:38,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:38,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:38,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:39,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:39,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:39,430 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:39,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:39,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:39,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:39,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d3ad6b-4ee6-4676-ab8d-2044809d0272/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:39,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:39,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:39,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:39,700 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:39,703 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:45,179 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:45,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:45,205 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:47:45,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:45 BoogieIcfgContainer [2023-11-19 07:47:45,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:45,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:45,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:45,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:45,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:35" (1/3) ... [2023-11-19 07:47:45,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5e2505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:45, skipping insertion in model container [2023-11-19 07:47:45,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (2/3) ... [2023-11-19 07:47:45,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5e2505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:45, skipping insertion in model container [2023-11-19 07:47:45,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:45" (3/3) ... [2023-11-19 07:47:45,230 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-11-19 07:47:45,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:45,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:47:45,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:45,371 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;@6957de16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:45,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:47:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:47:45,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:45,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:45,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:45,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash -28928260, now seen corresponding path program 1 times [2023-11-19 07:47:45,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:45,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942748483] [2023-11-19 07:47:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:45,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:45,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942748483] [2023-11-19 07:47:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942748483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:45,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:45,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114556746] [2023-11-19 07:47:45,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:45,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:45,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:45,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:45,805 INFO L87 Difference]: Start difference. First operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:45,898 INFO L93 Difference]: Finished difference Result 1806 states and 3426 transitions. [2023-11-19 07:47:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:45,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-19 07:47:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:45,940 INFO L225 Difference]: With dead ends: 1806 [2023-11-19 07:47:45,940 INFO L226 Difference]: Without dead ends: 866 [2023-11-19 07:47:45,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:45,961 INFO L413 NwaCegarLoop]: 1699 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, 1699 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 07:47:45,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-11-19 07:47:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2023-11-19 07:47:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8923611111111112) internal successors, (1635), 865 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1635 transitions. [2023-11-19 07:47:46,088 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1635 transitions. Word has length 28 [2023-11-19 07:47:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:46,089 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1635 transitions. [2023-11-19 07:47:46,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1635 transitions. [2023-11-19 07:47:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:47:46,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:46,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:46,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:46,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:46,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 189926458, now seen corresponding path program 1 times [2023-11-19 07:47:46,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388716565] [2023-11-19 07:47:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:46,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:46,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388716565] [2023-11-19 07:47:46,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388716565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:46,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:46,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639334006] [2023-11-19 07:47:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:46,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:46,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:46,498 INFO L87 Difference]: Start difference. First operand 866 states and 1635 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:46,691 INFO L93 Difference]: Finished difference Result 926 states and 1729 transitions. [2023-11-19 07:47:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:46,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-19 07:47:46,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:46,698 INFO L225 Difference]: With dead ends: 926 [2023-11-19 07:47:46,698 INFO L226 Difference]: Without dead ends: 866 [2023-11-19 07:47:46,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:46,701 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 2 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:46,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6477 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-11-19 07:47:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2023-11-19 07:47:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8344907407407407) internal successors, (1585), 865 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1585 transitions. [2023-11-19 07:47:46,727 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1585 transitions. Word has length 28 [2023-11-19 07:47:46,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:46,727 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1585 transitions. [2023-11-19 07:47:46,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1585 transitions. [2023-11-19 07:47:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:47:46,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:46,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:46,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:46,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:46,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash 194507117, now seen corresponding path program 1 times [2023-11-19 07:47:46,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886531678] [2023-11-19 07:47:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:46,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:46,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886531678] [2023-11-19 07:47:46,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886531678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:46,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:46,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523812135] [2023-11-19 07:47:46,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:46,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:46,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:46,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:46,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:46,802 INFO L87 Difference]: Start difference. First operand 866 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:51,401 INFO L93 Difference]: Finished difference Result 2370 states and 4458 transitions. [2023-11-19 07:47:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 07:47:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:51,413 INFO L225 Difference]: With dead ends: 2370 [2023-11-19 07:47:51,414 INFO L226 Difference]: Without dead ends: 1617 [2023-11-19 07:47:51,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:47:51,417 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 917 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:51,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 621 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 07:47:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2023-11-19 07:47:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1617. [2023-11-19 07:47:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1615 states have (on average 1.5876160990712074) internal successors, (2564), 1616 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2564 transitions. [2023-11-19 07:47:51,465 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2564 transitions. Word has length 30 [2023-11-19 07:47:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:51,466 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2564 transitions. [2023-11-19 07:47:51,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2564 transitions. [2023-11-19 07:47:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:47:51,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:51,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:51,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:51,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:51,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1109970983, now seen corresponding path program 1 times [2023-11-19 07:47:51,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:51,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369035975] [2023-11-19 07:47:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:51,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369035975] [2023-11-19 07:47:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369035975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:51,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:51,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:47:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269985249] [2023-11-19 07:47:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:51,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:51,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:51,808 INFO L87 Difference]: Start difference. First operand 1617 states and 2564 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:52,309 INFO L93 Difference]: Finished difference Result 2401 states and 3824 transitions. [2023-11-19 07:47:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:47:52,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-19 07:47:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:52,327 INFO L225 Difference]: With dead ends: 2401 [2023-11-19 07:47:52,327 INFO L226 Difference]: Without dead ends: 2345 [2023-11-19 07:47:52,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:47:52,330 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 11614 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11614 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:52,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11614 Valid, 4325 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-11-19 07:47:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1671. [2023-11-19 07:47:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1669 states have (on average 1.5883762732174955) internal successors, (2651), 1670 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2651 transitions. [2023-11-19 07:47:52,387 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2651 transitions. Word has length 77 [2023-11-19 07:47:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:52,388 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2651 transitions. [2023-11-19 07:47:52,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2651 transitions. [2023-11-19 07:47:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:47:52,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:52,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:52,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:52,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:52,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1349050793, now seen corresponding path program 1 times [2023-11-19 07:47:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:52,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654174499] [2023-11-19 07:47:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:52,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:52,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654174499] [2023-11-19 07:47:52,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654174499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:52,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:52,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:52,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945325534] [2023-11-19 07:47:52,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:52,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:52,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:52,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:52,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:52,515 INFO L87 Difference]: Start difference. First operand 1671 states and 2651 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:52,578 INFO L93 Difference]: Finished difference Result 1880 states and 2986 transitions. [2023-11-19 07:47:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:52,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-19 07:47:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:52,592 INFO L225 Difference]: With dead ends: 1880 [2023-11-19 07:47:52,592 INFO L226 Difference]: Without dead ends: 1770 [2023-11-19 07:47:52,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:52,596 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1500 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:52,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1664 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2023-11-19 07:47:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1766. [2023-11-19 07:47:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1764 states have (on average 1.5878684807256236) internal successors, (2801), 1765 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2801 transitions. [2023-11-19 07:47:52,654 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2801 transitions. Word has length 79 [2023-11-19 07:47:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:52,656 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2801 transitions. [2023-11-19 07:47:52,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2801 transitions. [2023-11-19 07:47:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:47:52,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:52,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:52,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:52,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:52,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1415544305, now seen corresponding path program 1 times [2023-11-19 07:47:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705233939] [2023-11-19 07:47:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:53,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705233939] [2023-11-19 07:47:53,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705233939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:53,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:53,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:47:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320812337] [2023-11-19 07:47:53,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:53,265 INFO L87 Difference]: Start difference. First operand 1766 states and 2801 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:53,863 INFO L93 Difference]: Finished difference Result 1973 states and 3129 transitions. [2023-11-19 07:47:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:53,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-19 07:47:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:53,879 INFO L225 Difference]: With dead ends: 1973 [2023-11-19 07:47:53,879 INFO L226 Difference]: Without dead ends: 1768 [2023-11-19 07:47:53,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:53,887 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 6068 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6068 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:53,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6068 Valid, 2099 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2023-11-19 07:47:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1766. [2023-11-19 07:47:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1764 states have (on average 1.586734693877551) internal successors, (2799), 1765 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2799 transitions. [2023-11-19 07:47:53,960 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2799 transitions. Word has length 79 [2023-11-19 07:47:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:53,961 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2799 transitions. [2023-11-19 07:47:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2799 transitions. [2023-11-19 07:47:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:47:53,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:53,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:53,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:53,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash 517477589, now seen corresponding path program 1 times [2023-11-19 07:47:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718365206] [2023-11-19 07:47:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:54,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718365206] [2023-11-19 07:47:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718365206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:54,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:47:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983935186] [2023-11-19 07:47:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:54,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:54,483 INFO L87 Difference]: Start difference. First operand 1766 states and 2799 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:54,669 INFO L93 Difference]: Finished difference Result 1938 states and 3075 transitions. [2023-11-19 07:47:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:47:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 07:47:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:54,682 INFO L225 Difference]: With dead ends: 1938 [2023-11-19 07:47:54,683 INFO L226 Difference]: Without dead ends: 1936 [2023-11-19 07:47:54,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:54,687 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 177 mSDsluCounter, 9669 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 11322 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:54,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 11322 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2023-11-19 07:47:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1772. [2023-11-19 07:47:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1770 states have (on average 1.584180790960452) internal successors, (2804), 1771 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2804 transitions. [2023-11-19 07:47:54,756 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2804 transitions. Word has length 80 [2023-11-19 07:47:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:54,757 INFO L495 AbstractCegarLoop]: Abstraction has 1772 states and 2804 transitions. [2023-11-19 07:47:54,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2804 transitions. [2023-11-19 07:47:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:47:54,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:54,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:54,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:47:54,763 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:54,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash -927531695, now seen corresponding path program 1 times [2023-11-19 07:47:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:54,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080662644] [2023-11-19 07:47:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080662644] [2023-11-19 07:47:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080662644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:54,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:54,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336528836] [2023-11-19 07:47:54,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:54,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:54,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:54,854 INFO L87 Difference]: Start difference. First operand 1772 states and 2804 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:54,910 INFO L93 Difference]: Finished difference Result 2178 states and 3436 transitions. [2023-11-19 07:47:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:54,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-19 07:47:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:54,924 INFO L225 Difference]: With dead ends: 2178 [2023-11-19 07:47:54,924 INFO L226 Difference]: Without dead ends: 1967 [2023-11-19 07:47:54,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:54,929 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1517 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:54,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2023-11-19 07:47:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1965. [2023-11-19 07:47:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1963 states have (on average 1.5797249108507387) internal successors, (3101), 1964 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3101 transitions. [2023-11-19 07:47:54,996 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3101 transitions. Word has length 81 [2023-11-19 07:47:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:54,997 INFO L495 AbstractCegarLoop]: Abstraction has 1965 states and 3101 transitions. [2023-11-19 07:47:54,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3101 transitions. [2023-11-19 07:47:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:47:54,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:54,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:54,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:47:54,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:55,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -764617135, now seen corresponding path program 1 times [2023-11-19 07:47:55,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:55,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036306985] [2023-11-19 07:47:55,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:55,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:55,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036306985] [2023-11-19 07:47:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036306985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:55,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:55,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:55,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35282718] [2023-11-19 07:47:55,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:55,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:55,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:55,109 INFO L87 Difference]: Start difference. First operand 1965 states and 3101 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:55,172 INFO L93 Difference]: Finished difference Result 2741 states and 4299 transitions. [2023-11-19 07:47:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-19 07:47:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:55,191 INFO L225 Difference]: With dead ends: 2741 [2023-11-19 07:47:55,191 INFO L226 Difference]: Without dead ends: 2337 [2023-11-19 07:47:55,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:55,195 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1515 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:55,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:55,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2023-11-19 07:47:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2335. [2023-11-19 07:47:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2333 states have (on average 1.5700814402057437) internal successors, (3663), 2334 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3663 transitions. [2023-11-19 07:47:55,271 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3663 transitions. Word has length 81 [2023-11-19 07:47:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:55,271 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3663 transitions. [2023-11-19 07:47:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3663 transitions. [2023-11-19 07:47:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:47:55,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:55,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:55,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:47:55,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:55,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 737501265, now seen corresponding path program 1 times [2023-11-19 07:47:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835010670] [2023-11-19 07:47:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:55,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835010670] [2023-11-19 07:47:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835010670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:55,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:55,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780017470] [2023-11-19 07:47:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:55,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:55,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:55,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:55,355 INFO L87 Difference]: Start difference. First operand 2335 states and 3663 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:55,436 INFO L93 Difference]: Finished difference Result 3819 states and 5929 transitions. [2023-11-19 07:47:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-19 07:47:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:55,454 INFO L225 Difference]: With dead ends: 3819 [2023-11-19 07:47:55,455 INFO L226 Difference]: Without dead ends: 3045 [2023-11-19 07:47:55,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:55,457 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1511 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:55,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2023-11-19 07:47:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3043. [2023-11-19 07:47:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3041 states have (on average 1.5531075304176258) internal successors, (4723), 3042 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 4723 transitions. [2023-11-19 07:47:55,562 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 4723 transitions. Word has length 81 [2023-11-19 07:47:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:55,563 INFO L495 AbstractCegarLoop]: Abstraction has 3043 states and 4723 transitions. [2023-11-19 07:47:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 4723 transitions. [2023-11-19 07:47:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:47:55,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:55,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:55,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:47:55,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:55,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1477967535, now seen corresponding path program 1 times [2023-11-19 07:47:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321400106] [2023-11-19 07:47:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:55,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:55,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321400106] [2023-11-19 07:47:55,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321400106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:55,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:55,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:55,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466453969] [2023-11-19 07:47:55,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:55,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:55,704 INFO L87 Difference]: Start difference. First operand 3043 states and 4723 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:55,823 INFO L93 Difference]: Finished difference Result 5879 states and 8997 transitions. [2023-11-19 07:47:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:55,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-19 07:47:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:55,850 INFO L225 Difference]: With dead ends: 5879 [2023-11-19 07:47:55,850 INFO L226 Difference]: Without dead ends: 4397 [2023-11-19 07:47:55,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:55,854 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 1509 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:55,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2023-11-19 07:47:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4395. [2023-11-19 07:47:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4393 states have (on average 1.528568176644662) internal successors, (6715), 4394 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 6715 transitions. [2023-11-19 07:47:56,027 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 6715 transitions. Word has length 81 [2023-11-19 07:47:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:56,028 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 6715 transitions. [2023-11-19 07:47:56,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 6715 transitions. [2023-11-19 07:47:56,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:47:56,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:56,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:47:56,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:56,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash 302965329, now seen corresponding path program 1 times [2023-11-19 07:47:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132996169] [2023-11-19 07:47:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132996169] [2023-11-19 07:47:56,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132996169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:56,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:56,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448566358] [2023-11-19 07:47:56,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:56,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:56,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:56,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:56,114 INFO L87 Difference]: Start difference. First operand 4395 states and 6715 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:56,314 INFO L93 Difference]: Finished difference Result 9807 states and 14749 transitions. [2023-11-19 07:47:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-19 07:47:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:56,355 INFO L225 Difference]: With dead ends: 9807 [2023-11-19 07:47:56,355 INFO L226 Difference]: Without dead ends: 6973 [2023-11-19 07:47:56,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:56,361 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 1507 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:56,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2023-11-19 07:47:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6971. [2023-11-19 07:47:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6971 states, 6969 states have (on average 1.498493327593629) internal successors, (10443), 6970 states have internal predecessors, (10443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6971 states to 6971 states and 10443 transitions. [2023-11-19 07:47:56,685 INFO L78 Accepts]: Start accepts. Automaton has 6971 states and 10443 transitions. Word has length 81 [2023-11-19 07:47:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:56,685 INFO L495 AbstractCegarLoop]: Abstraction has 6971 states and 10443 transitions. [2023-11-19 07:47:56,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6971 states and 10443 transitions. [2023-11-19 07:47:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:47:56,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:56,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:47:56,688 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:56,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash -500760751, now seen corresponding path program 1 times [2023-11-19 07:47:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484528683] [2023-11-19 07:47:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:56,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:56,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484528683] [2023-11-19 07:47:56,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484528683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:56,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:56,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919209463] [2023-11-19 07:47:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:56,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:56,770 INFO L87 Difference]: Start difference. First operand 6971 states and 10443 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:57,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:57,231 INFO L93 Difference]: Finished difference Result 17279 states and 25485 transitions. [2023-11-19 07:47:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:57,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-19 07:47:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:57,262 INFO L225 Difference]: With dead ends: 17279 [2023-11-19 07:47:57,262 INFO L226 Difference]: Without dead ends: 11869 [2023-11-19 07:47:57,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:57,272 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1513 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:57,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1751 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2023-11-19 07:47:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 11867. [2023-11-19 07:47:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11867 states, 11865 states have (on average 1.465402444163506) internal successors, (17387), 11866 states have internal predecessors, (17387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11867 states to 11867 states and 17387 transitions. [2023-11-19 07:47:57,783 INFO L78 Accepts]: Start accepts. Automaton has 11867 states and 17387 transitions. Word has length 81 [2023-11-19 07:47:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:57,784 INFO L495 AbstractCegarLoop]: Abstraction has 11867 states and 17387 transitions. [2023-11-19 07:47:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11867 states and 17387 transitions. [2023-11-19 07:47:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 07:47:57,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:57,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:57,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:47:57,786 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:57,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:57,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1125158260, now seen corresponding path program 1 times [2023-11-19 07:47:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:57,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505032820] [2023-11-19 07:47:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:57,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:57,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:57,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505032820] [2023-11-19 07:47:57,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505032820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:57,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:57,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:57,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303982534] [2023-11-19 07:47:57,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:57,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:57,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:57,863 INFO L87 Difference]: Start difference. First operand 11867 states and 17387 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:58,458 INFO L93 Difference]: Finished difference Result 22626 states and 33137 transitions. [2023-11-19 07:47:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:58,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-11-19 07:47:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:58,494 INFO L225 Difference]: With dead ends: 22626 [2023-11-19 07:47:58,495 INFO L226 Difference]: Without dead ends: 16863 [2023-11-19 07:47:58,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:58,504 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 1516 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:58,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16863 states. [2023-11-19 07:47:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16863 to 16861. [2023-11-19 07:47:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16861 states, 16859 states have (on average 1.4528145204341893) internal successors, (24493), 16860 states have internal predecessors, (24493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16861 states to 16861 states and 24493 transitions. [2023-11-19 07:47:59,316 INFO L78 Accepts]: Start accepts. Automaton has 16861 states and 24493 transitions. Word has length 83 [2023-11-19 07:47:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:59,317 INFO L495 AbstractCegarLoop]: Abstraction has 16861 states and 24493 transitions. [2023-11-19 07:47:59,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 16861 states and 24493 transitions. [2023-11-19 07:47:59,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:47:59,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:59,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:59,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:47:59,324 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:59,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash -293163275, now seen corresponding path program 1 times [2023-11-19 07:47:59,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:59,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757674336] [2023-11-19 07:47:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757674336] [2023-11-19 07:47:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757674336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:47:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174679971] [2023-11-19 07:47:59,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:59,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:59,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:59,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:59,766 INFO L87 Difference]: Start difference. First operand 16861 states and 24493 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:04,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:04,090 INFO L93 Difference]: Finished difference Result 127085 states and 182965 transitions. [2023-11-19 07:48:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:48:04,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-11-19 07:48:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:04,394 INFO L225 Difference]: With dead ends: 127085 [2023-11-19 07:48:04,394 INFO L226 Difference]: Without dead ends: 111787 [2023-11-19 07:48:04,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:48:04,443 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 9907 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9907 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:04,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9907 Valid, 4412 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111787 states. [2023-11-19 07:48:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111787 to 32157. [2023-11-19 07:48:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32157 states, 32155 states have (on average 1.4404291712019903) internal successors, (46317), 32156 states have internal predecessors, (46317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32157 states to 32157 states and 46317 transitions. [2023-11-19 07:48:07,347 INFO L78 Accepts]: Start accepts. Automaton has 32157 states and 46317 transitions. Word has length 104 [2023-11-19 07:48:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:07,347 INFO L495 AbstractCegarLoop]: Abstraction has 32157 states and 46317 transitions. [2023-11-19 07:48:07,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 32157 states and 46317 transitions. [2023-11-19 07:48:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:48:07,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:07,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:07,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:48:07,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:07,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:07,357 INFO L85 PathProgramCache]: Analyzing trace with hash -130248715, now seen corresponding path program 1 times [2023-11-19 07:48:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:07,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276362658] [2023-11-19 07:48:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:07,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:48:07,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276362658] [2023-11-19 07:48:07,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276362658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:07,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:07,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:48:07,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057800385] [2023-11-19 07:48:07,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:07,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:07,726 INFO L87 Difference]: Start difference. First operand 32157 states and 46317 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:11,938 INFO L93 Difference]: Finished difference Result 142381 states and 204789 transitions. [2023-11-19 07:48:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:48:11,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-11-19 07:48:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:12,201 INFO L225 Difference]: With dead ends: 142381 [2023-11-19 07:48:12,202 INFO L226 Difference]: Without dead ends: 127083 [2023-11-19 07:48:12,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:48:12,249 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 9949 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9949 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:12,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9949 Valid, 4305 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:48:12,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127083 states. [2023-11-19 07:48:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127083 to 55133. [2023-11-19 07:48:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55133 states, 55131 states have (on average 1.4310097767136456) internal successors, (78893), 55132 states have internal predecessors, (78893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55133 states to 55133 states and 78893 transitions. [2023-11-19 07:48:16,571 INFO L78 Accepts]: Start accepts. Automaton has 55133 states and 78893 transitions. Word has length 104 [2023-11-19 07:48:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:16,572 INFO L495 AbstractCegarLoop]: Abstraction has 55133 states and 78893 transitions. [2023-11-19 07:48:16,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 55133 states and 78893 transitions. [2023-11-19 07:48:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:48:16,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:16,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:16,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:48:16,582 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:16,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:16,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1371869685, now seen corresponding path program 1 times [2023-11-19 07:48:16,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456397843] [2023-11-19 07:48:16,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:16,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat