./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 0275b6de2ba0a66ec9aee8de32ff466d54e24272e5f9096b55f3975f63dd9962 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:46,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:46,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:14:46,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:46,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:46,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:46,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:46,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:46,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:46,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:46,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:46,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:46,713 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:46,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:46,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:46,715 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:46,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:46,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:46,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:46,717 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:46,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:46,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:46,719 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:46,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:46,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:46,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:46,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:46,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:46,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:46,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:46,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:46,724 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:46,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:46,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:46,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:46,725 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:46,725 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:46,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:46,725 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:46,726 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_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0275b6de2ba0a66ec9aee8de32ff466d54e24272e5f9096b55f3975f63dd9962 [2023-11-06 21:14:47,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:47,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:47,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:47,087 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:47,088 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:47,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2023-11-06 21:14:50,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:51,070 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:51,071 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2023-11-06 21:14:51,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/data/15a756f0f/aefcd179bb16484ea2b5dd864d8c0ecc/FLAG9fd317295 [2023-11-06 21:14:51,143 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/data/15a756f0f/aefcd179bb16484ea2b5dd864d8c0ecc [2023-11-06 21:14:51,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:51,152 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:51,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:51,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:51,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:51,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:51" (1/1) ... [2023-11-06 21:14:51,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11083d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:51, skipping insertion in model container [2023-11-06 21:14:51,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:51" (1/1) ... [2023-11-06 21:14:51,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:51,782 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_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[26860,26873] [2023-11-06 21:14:51,813 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_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[27702,27715] [2023-11-06 21:14:52,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:52,942 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:53,007 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_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[26860,26873] [2023-11-06 21:14:53,016 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_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[27702,27715] [2023-11-06 21:14:53,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:53,714 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:53,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53 WrapperNode [2023-11-06 21:14:53,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:53,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:53,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:53,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:53,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:53,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,235 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5284 [2023-11-06 21:14:54,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:54,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:54,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:54,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:54,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:54,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:54,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:54,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:54,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (1/1) ... [2023-11-06 21:14:54,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:54,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:54,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:54,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dd28eb-2b30-4aa6-8163-f99dbaa8cb4c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:55,195 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:55,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:15:01,330 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:15:01,362 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:15:01,363 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:15:01,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:01 BoogieIcfgContainer [2023-11-06 21:15:01,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:15:01,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:15:01,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:15:01,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:15:01,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:51" (1/3) ... [2023-11-06 21:15:01,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238cf4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:01, skipping insertion in model container [2023-11-06 21:15:01,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:53" (2/3) ... [2023-11-06 21:15:01,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238cf4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:01, skipping insertion in model container [2023-11-06 21:15:01,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:01" (3/3) ... [2023-11-06 21:15:01,386 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2023-11-06 21:15:01,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:15:01,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 21:15:01,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:15:01,549 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=LoopsAndPotentialCycles, 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;@42d07f3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:15:01,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 21:15:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 21:15:01,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:01,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:01,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:01,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1876226900, now seen corresponding path program 1 times [2023-11-06 21:15:01,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598366071] [2023-11-06 21:15:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:01,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598366071] [2023-11-06 21:15:02,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598366071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:02,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:02,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948759973] [2023-11-06 21:15:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:02,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:02,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:02,228 INFO L87 Difference]: Start difference. First operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:08,052 INFO L93 Difference]: Finished difference Result 2598 states and 4982 transitions. [2023-11-06 21:15:08,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-11-06 21:15:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:08,086 INFO L225 Difference]: With dead ends: 2598 [2023-11-06 21:15:08,086 INFO L226 Difference]: Without dead ends: 1632 [2023-11-06 21:15:08,096 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 [2023-11-06 21:15:08,101 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 1042 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:08,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 755 Invalid, 3033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-06 21:15:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-06 21:15:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2023-11-06 21:15:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1630 states have (on average 1.6214723926380368) internal successors, (2643), 1631 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2643 transitions. [2023-11-06 21:15:08,265 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2643 transitions. Word has length 7 [2023-11-06 21:15:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:08,266 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 2643 transitions. [2023-11-06 21:15:08,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2643 transitions. [2023-11-06 21:15:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 21:15:08,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:08,270 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] [2023-11-06 21:15:08,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:15:08,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:08,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:08,272 INFO L85 PathProgramCache]: Analyzing trace with hash -194578388, now seen corresponding path program 1 times [2023-11-06 21:15:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198242985] [2023-11-06 21:15:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198242985] [2023-11-06 21:15:08,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198242985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:08,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:08,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:15:08,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421915151] [2023-11-06 21:15:08,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:08,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:08,686 INFO L87 Difference]: Start difference. First operand 1632 states and 2643 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2023-11-06 21:15:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:08,877 INFO L93 Difference]: Finished difference Result 1696 states and 2744 transitions. [2023-11-06 21:15:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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 [2023-11-06 21:15:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:08,890 INFO L225 Difference]: With dead ends: 1696 [2023-11-06 21:15:08,890 INFO L226 Difference]: Without dead ends: 1632 [2023-11-06 21:15:08,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:08,893 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 2 mSDsluCounter, 4920 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6582 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:15:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-06 21:15:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2023-11-06 21:15:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1630 states have (on average 1.5840490797546012) internal successors, (2582), 1631 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2582 transitions. [2023-11-06 21:15:08,957 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2582 transitions. Word has length 30 [2023-11-06 21:15:08,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:08,957 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 2582 transitions. [2023-11-06 21:15:08,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2023-11-06 21:15:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2582 transitions. [2023-11-06 21:15:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 21:15:08,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:08,963 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:15:08,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:08,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:08,965 INFO L85 PathProgramCache]: Analyzing trace with hash 954284371, now seen corresponding path program 1 times [2023-11-06 21:15:08,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:08,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003093762] [2023-11-06 21:15:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:08,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003093762] [2023-11-06 21:15:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003093762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:09,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:15:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118388851] [2023-11-06 21:15:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:09,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:09,591 INFO L87 Difference]: Start difference. First operand 1632 states and 2582 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:14,315 INFO L93 Difference]: Finished difference Result 3891 states and 5981 transitions. [2023-11-06 21:15:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:14,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-11-06 21:15:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:14,331 INFO L225 Difference]: With dead ends: 3891 [2023-11-06 21:15:14,331 INFO L226 Difference]: Without dead ends: 2387 [2023-11-06 21:15:14,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:15:14,336 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 2377 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:14,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 1966 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 21:15:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2023-11-06 21:15:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2383. [2023-11-06 21:15:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2381 states have (on average 1.4023519529609407) internal successors, (3339), 2382 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 3339 transitions. [2023-11-06 21:15:14,408 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 3339 transitions. Word has length 82 [2023-11-06 21:15:14,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:14,409 INFO L495 AbstractCegarLoop]: Abstraction has 2383 states and 3339 transitions. [2023-11-06 21:15:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 3339 transitions. [2023-11-06 21:15:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 21:15:14,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:14,419 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:14,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:15:14,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:14,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash 255619932, now seen corresponding path program 1 times [2023-11-06 21:15:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492491854] [2023-11-06 21:15:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:14,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:14,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492491854] [2023-11-06 21:15:14,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492491854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:14,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:14,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:15:14,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112741733] [2023-11-06 21:15:14,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:14,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:15:14,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:14,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:15:14,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:15:14,965 INFO L87 Difference]: Start difference. First operand 2383 states and 3339 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:15,782 INFO L93 Difference]: Finished difference Result 3343 states and 4891 transitions. [2023-11-06 21:15:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:15:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-06 21:15:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:15,805 INFO L225 Difference]: With dead ends: 3343 [2023-11-06 21:15:15,806 INFO L226 Difference]: Without dead ends: 3283 [2023-11-06 21:15:15,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-06 21:15:15,809 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 13373 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13373 SdHoareTripleChecker+Valid, 6388 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:15,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13373 Valid, 6388 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:15:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2023-11-06 21:15:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2441. [2023-11-06 21:15:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2441 states, 2439 states have (on average 1.4075440754407544) internal successors, (3433), 2440 states have internal predecessors, (3433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 3433 transitions. [2023-11-06 21:15:15,921 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 3433 transitions. Word has length 90 [2023-11-06 21:15:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:15,922 INFO L495 AbstractCegarLoop]: Abstraction has 2441 states and 3433 transitions. [2023-11-06 21:15:15,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 3433 transitions. [2023-11-06 21:15:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 21:15:15,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:15,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:15,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:15:15,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:15,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -578069748, now seen corresponding path program 1 times [2023-11-06 21:15:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109672903] [2023-11-06 21:15:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109672903] [2023-11-06 21:15:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109672903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:16,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:16,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708954301] [2023-11-06 21:15:16,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:16,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:16,109 INFO L87 Difference]: Start difference. First operand 2441 states and 3433 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:16,198 INFO L93 Difference]: Finished difference Result 2666 states and 3796 transitions. [2023-11-06 21:15:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:16,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-11-06 21:15:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:16,215 INFO L225 Difference]: With dead ends: 2666 [2023-11-06 21:15:16,215 INFO L226 Difference]: Without dead ends: 2548 [2023-11-06 21:15:16,216 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 [2023-11-06 21:15:16,218 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 1506 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:16,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2023-11-06 21:15:16,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2546. [2023-11-06 21:15:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2544 states have (on average 1.4154874213836477) internal successors, (3601), 2545 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3601 transitions. [2023-11-06 21:15:16,337 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3601 transitions. Word has length 92 [2023-11-06 21:15:16,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:16,338 INFO L495 AbstractCegarLoop]: Abstraction has 2546 states and 3601 transitions. [2023-11-06 21:15:16,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3601 transitions. [2023-11-06 21:15:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 21:15:16,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:16,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:16,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:15:16,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:16,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:16,341 INFO L85 PathProgramCache]: Analyzing trace with hash -511576236, now seen corresponding path program 1 times [2023-11-06 21:15:16,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:16,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058908867] [2023-11-06 21:15:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:16,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:17,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058908867] [2023-11-06 21:15:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058908867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:17,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:17,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:15:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578100874] [2023-11-06 21:15:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:17,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:15:17,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:17,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:15:17,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:15:17,015 INFO L87 Difference]: Start difference. First operand 2546 states and 3601 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:17,879 INFO L93 Difference]: Finished difference Result 2771 states and 3961 transitions. [2023-11-06 21:15:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:15:17,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-11-06 21:15:17,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:17,897 INFO L225 Difference]: With dead ends: 2771 [2023-11-06 21:15:17,898 INFO L226 Difference]: Without dead ends: 2548 [2023-11-06 21:15:17,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:15:17,910 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 4602 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:17,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4602 Valid, 2254 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:15:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2023-11-06 21:15:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2546. [2023-11-06 21:15:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2544 states have (on average 1.4147012578616351) internal successors, (3599), 2545 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3599 transitions. [2023-11-06 21:15:18,046 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3599 transitions. Word has length 92 [2023-11-06 21:15:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:18,047 INFO L495 AbstractCegarLoop]: Abstraction has 2546 states and 3599 transitions. [2023-11-06 21:15:18,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3599 transitions. [2023-11-06 21:15:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 21:15:18,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:18,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:18,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:15:18,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:18,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash 906283047, now seen corresponding path program 1 times [2023-11-06 21:15:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072263306] [2023-11-06 21:15:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:18,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:18,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072263306] [2023-11-06 21:15:18,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072263306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:18,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:18,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:15:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244523517] [2023-11-06 21:15:18,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:18,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:18,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:18,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:18,382 INFO L87 Difference]: Start difference. First operand 2546 states and 3599 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:18,524 INFO L93 Difference]: Finished difference Result 2737 states and 3908 transitions. [2023-11-06 21:15:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-06 21:15:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:18,540 INFO L225 Difference]: With dead ends: 2737 [2023-11-06 21:15:18,540 INFO L226 Difference]: Without dead ends: 2735 [2023-11-06 21:15:18,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:18,542 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 85 mSDsluCounter, 4953 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 6634 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:18,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 6634 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-11-06 21:15:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2552. [2023-11-06 21:15:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.4133333333333333) internal successors, (3604), 2551 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3604 transitions. [2023-11-06 21:15:18,651 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3604 transitions. Word has length 93 [2023-11-06 21:15:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:18,651 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 3604 transitions. [2023-11-06 21:15:18,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3604 transitions. [2023-11-06 21:15:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:18,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:18,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:18,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:15:18,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:18,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1719553388, now seen corresponding path program 1 times [2023-11-06 21:15:18,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:18,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238885607] [2023-11-06 21:15:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:18,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238885607] [2023-11-06 21:15:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238885607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:18,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:18,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:18,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761253617] [2023-11-06 21:15:18,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:18,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:18,760 INFO L87 Difference]: Start difference. First operand 2552 states and 3604 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:18,868 INFO L93 Difference]: Finished difference Result 2794 states and 3985 transitions. [2023-11-06 21:15:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:18,883 INFO L225 Difference]: With dead ends: 2794 [2023-11-06 21:15:18,883 INFO L226 Difference]: Without dead ends: 2670 [2023-11-06 21:15:18,885 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 [2023-11-06 21:15:18,885 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1526 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1783 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 [2023-11-06 21:15:18,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1783 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2023-11-06 21:15:19,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2668. [2023-11-06 21:15:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.4197299324831207) internal successors, (3785), 2667 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 3785 transitions. [2023-11-06 21:15:19,027 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 3785 transitions. Word has length 94 [2023-11-06 21:15:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:19,027 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 3785 transitions. [2023-11-06 21:15:19,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 3785 transitions. [2023-11-06 21:15:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:19,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:19,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:19,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:15:19,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:19,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash 593433492, now seen corresponding path program 1 times [2023-11-06 21:15:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:19,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682144329] [2023-11-06 21:15:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:19,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:19,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682144329] [2023-11-06 21:15:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682144329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:19,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:19,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:19,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588814510] [2023-11-06 21:15:19,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:19,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:19,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:19,138 INFO L87 Difference]: Start difference. First operand 2668 states and 3785 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:19,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:19,459 INFO L93 Difference]: Finished difference Result 3330 states and 4825 transitions. [2023-11-06 21:15:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:19,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:19,480 INFO L225 Difference]: With dead ends: 3330 [2023-11-06 21:15:19,481 INFO L226 Difference]: Without dead ends: 2987 [2023-11-06 21:15:19,483 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 [2023-11-06 21:15:19,484 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 1524 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 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 [2023-11-06 21:15:19,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2023-11-06 21:15:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2985. [2023-11-06 21:15:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2983 states have (on average 1.433791485082132) internal successors, (4277), 2984 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4277 transitions. [2023-11-06 21:15:19,826 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4277 transitions. Word has length 94 [2023-11-06 21:15:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:19,827 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4277 transitions. [2023-11-06 21:15:19,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4277 transitions. [2023-11-06 21:15:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:19,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:19,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:19,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:15:19,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:19,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1596549740, now seen corresponding path program 1 times [2023-11-06 21:15:19,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:19,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391642187] [2023-11-06 21:15:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:19,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:19,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391642187] [2023-11-06 21:15:19,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391642187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:19,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:19,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:19,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505425317] [2023-11-06 21:15:19,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:19,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:19,973 INFO L87 Difference]: Start difference. First operand 2985 states and 4277 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:20,399 INFO L93 Difference]: Finished difference Result 4257 states and 6259 transitions. [2023-11-06 21:15:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:20,437 INFO L225 Difference]: With dead ends: 4257 [2023-11-06 21:15:20,437 INFO L226 Difference]: Without dead ends: 3597 [2023-11-06 21:15:20,440 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 [2023-11-06 21:15:20,440 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1520 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1785 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 [2023-11-06 21:15:20,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1785 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2023-11-06 21:15:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3595. [2023-11-06 21:15:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3593 states have (on average 1.4508767047035904) internal successors, (5213), 3594 states have internal predecessors, (5213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 5213 transitions. [2023-11-06 21:15:20,819 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 5213 transitions. Word has length 94 [2023-11-06 21:15:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:20,819 INFO L495 AbstractCegarLoop]: Abstraction has 3595 states and 5213 transitions. [2023-11-06 21:15:20,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 5213 transitions. [2023-11-06 21:15:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:20,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:20,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:20,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:15:20,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:20,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1332693356, now seen corresponding path program 1 times [2023-11-06 21:15:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807467376] [2023-11-06 21:15:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:20,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:20,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807467376] [2023-11-06 21:15:20,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807467376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:20,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:20,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:20,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476264598] [2023-11-06 21:15:20,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:20,939 INFO L87 Difference]: Start difference. First operand 3595 states and 5213 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:21,637 INFO L93 Difference]: Finished difference Result 6039 states and 8983 transitions. [2023-11-06 21:15:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:21,650 INFO L225 Difference]: With dead ends: 6039 [2023-11-06 21:15:21,650 INFO L226 Difference]: Without dead ends: 4769 [2023-11-06 21:15:21,654 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 [2023-11-06 21:15:21,655 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 1518 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1787 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 [2023-11-06 21:15:21,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1787 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2023-11-06 21:15:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4767. [2023-11-06 21:15:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4767 states, 4765 states have (on average 1.4667366211962225) internal successors, (6989), 4766 states have internal predecessors, (6989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4767 states to 4767 states and 6989 transitions. [2023-11-06 21:15:22,451 INFO L78 Accepts]: Start accepts. Automaton has 4767 states and 6989 transitions. Word has length 94 [2023-11-06 21:15:22,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:22,451 INFO L495 AbstractCegarLoop]: Abstraction has 4767 states and 6989 transitions. [2023-11-06 21:15:22,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:22,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4767 states and 6989 transitions. [2023-11-06 21:15:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:22,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:22,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:22,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:15:22,455 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:22,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash -94431340, now seen corresponding path program 1 times [2023-11-06 21:15:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:22,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063211337] [2023-11-06 21:15:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:22,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063211337] [2023-11-06 21:15:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063211337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277399895] [2023-11-06 21:15:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:22,594 INFO L87 Difference]: Start difference. First operand 4767 states and 6989 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:23,929 INFO L93 Difference]: Finished difference Result 9459 states and 14143 transitions. [2023-11-06 21:15:23,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:23,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:23,947 INFO L225 Difference]: With dead ends: 9459 [2023-11-06 21:15:23,947 INFO L226 Difference]: Without dead ends: 7017 [2023-11-06 21:15:23,954 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 [2023-11-06 21:15:23,955 INFO L413 NwaCegarLoop]: 1671 mSDtfsCounter, 1516 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1789 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 [2023-11-06 21:15:23,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2023-11-06 21:15:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 7015. [2023-11-06 21:15:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7015 states, 7013 states have (on average 1.4756880079851704) internal successors, (10349), 7014 states have internal predecessors, (10349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7015 states to 7015 states and 10349 transitions. [2023-11-06 21:15:25,016 INFO L78 Accepts]: Start accepts. Automaton has 7015 states and 10349 transitions. Word has length 94 [2023-11-06 21:15:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:25,016 INFO L495 AbstractCegarLoop]: Abstraction has 7015 states and 10349 transitions. [2023-11-06 21:15:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7015 states and 10349 transitions. [2023-11-06 21:15:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:25,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:25,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:25,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:15:25,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:25,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1985067156, now seen corresponding path program 1 times [2023-11-06 21:15:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:25,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735129783] [2023-11-06 21:15:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:25,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:25,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:25,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735129783] [2023-11-06 21:15:25,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735129783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:25,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:25,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:25,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64665509] [2023-11-06 21:15:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:25,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:25,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:25,130 INFO L87 Difference]: Start difference. First operand 7015 states and 10349 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:27,290 INFO L93 Difference]: Finished difference Result 16011 states and 23887 transitions. [2023-11-06 21:15:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:27,321 INFO L225 Difference]: With dead ends: 16011 [2023-11-06 21:15:27,321 INFO L226 Difference]: Without dead ends: 11321 [2023-11-06 21:15:27,330 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 [2023-11-06 21:15:27,331 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1514 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1791 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 [2023-11-06 21:15:27,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11321 states. [2023-11-06 21:15:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11321 to 11319. [2023-11-06 21:15:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11319 states, 11317 states have (on average 1.4743306529999116) internal successors, (16685), 11318 states have internal predecessors, (16685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11319 states to 11319 states and 16685 transitions. [2023-11-06 21:15:29,577 INFO L78 Accepts]: Start accepts. Automaton has 11319 states and 16685 transitions. Word has length 94 [2023-11-06 21:15:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:29,578 INFO L495 AbstractCegarLoop]: Abstraction has 11319 states and 16685 transitions. [2023-11-06 21:15:29,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 11319 states and 16685 transitions. [2023-11-06 21:15:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:29,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:29,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:29,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:15:29,581 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:29,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash -528967276, now seen corresponding path program 1 times [2023-11-06 21:15:29,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:29,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360055645] [2023-11-06 21:15:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:29,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360055645] [2023-11-06 21:15:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360055645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:29,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:29,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675418802] [2023-11-06 21:15:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:29,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:29,699 INFO L87 Difference]: Start difference. First operand 11319 states and 16685 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:33,058 INFO L93 Difference]: Finished difference Result 28539 states and 42223 transitions. [2023-11-06 21:15:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:33,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:33,115 INFO L225 Difference]: With dead ends: 28539 [2023-11-06 21:15:33,115 INFO L226 Difference]: Without dead ends: 19545 [2023-11-06 21:15:33,131 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 [2023-11-06 21:15:33,132 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1512 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1793 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 [2023-11-06 21:15:33,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1793 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19545 states. [2023-11-06 21:15:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19545 to 19543. [2023-11-06 21:15:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19543 states, 19541 states have (on average 1.4630264571925695) internal successors, (28589), 19542 states have internal predecessors, (28589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19543 states to 19543 states and 28589 transitions. [2023-11-06 21:15:36,655 INFO L78 Accepts]: Start accepts. Automaton has 19543 states and 28589 transitions. Word has length 94 [2023-11-06 21:15:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:36,656 INFO L495 AbstractCegarLoop]: Abstraction has 19543 states and 28589 transitions. [2023-11-06 21:15:36,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 19543 states and 28589 transitions. [2023-11-06 21:15:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:15:36,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:36,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:36,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:15:36,659 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:36,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1759464300, now seen corresponding path program 1 times [2023-11-06 21:15:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328012566] [2023-11-06 21:15:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328012566] [2023-11-06 21:15:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328012566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:36,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354732081] [2023-11-06 21:15:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:36,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:36,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:36,795 INFO L87 Difference]: Start difference. First operand 19543 states and 28589 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:43,606 INFO L93 Difference]: Finished difference Result 52443 states and 76591 transitions. [2023-11-06 21:15:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:43,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-06 21:15:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:43,701 INFO L225 Difference]: With dead ends: 52443 [2023-11-06 21:15:43,702 INFO L226 Difference]: Without dead ends: 35225 [2023-11-06 21:15:43,729 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 [2023-11-06 21:15:43,730 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1522 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1791 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 [2023-11-06 21:15:43,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35225 states. [2023-11-06 21:15:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35225 to 35223. [2023-11-06 21:15:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35223 states, 35221 states have (on average 1.4440532636779195) internal successors, (50861), 35222 states have internal predecessors, (50861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35223 states to 35223 states and 50861 transitions. [2023-11-06 21:15:51,862 INFO L78 Accepts]: Start accepts. Automaton has 35223 states and 50861 transitions. Word has length 94 [2023-11-06 21:15:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:51,862 INFO L495 AbstractCegarLoop]: Abstraction has 35223 states and 50861 transitions. [2023-11-06 21:15:51,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 35223 states and 50861 transitions. [2023-11-06 21:15:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 21:15:51,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:51,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:51,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:15:51,879 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:51,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1733023753, now seen corresponding path program 1 times [2023-11-06 21:15:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102606810] [2023-11-06 21:15:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:52,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:52,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102606810] [2023-11-06 21:15:52,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102606810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:52,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:52,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:15:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956859869] [2023-11-06 21:15:52,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:52,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:15:52,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:52,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:15:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:15:52,300 INFO L87 Difference]: Start difference. First operand 35223 states and 50861 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)