./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d51b990e6445ed156c5ede746535f5b5f7ba06d95cc894d4b94049499df3553 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:11,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:11,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:11,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:11,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:11,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:11,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:11,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:11,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:11,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:11,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:11,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:11,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:11,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:11,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:11,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:11,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:11,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:11,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:11,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:11,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:11,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:11,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:11,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:11,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:11,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:11,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:11,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:11,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:11,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:11,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:11,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:11,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:11,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:11,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:11,558 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:11,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:11,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:11,559 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:11,560 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_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d51b990e6445ed156c5ede746535f5b5f7ba06d95cc894d4b94049499df3553 [2023-11-19 08:02:11,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:11,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:11,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:11,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:11,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:11,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2023-11-19 08:02:15,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:15,794 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:15,796 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2023-11-19 08:02:15,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/data/b1d625bd9/3c47ea0c861242968e840d101f1cd30a/FLAGaea222baf [2023-11-19 08:02:15,867 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/data/b1d625bd9/3c47ea0c861242968e840d101f1cd30a [2023-11-19 08:02:15,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:15,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:15,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:15,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:15,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:15,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:15" (1/1) ... [2023-11-19 08:02:15,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef23dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:15, skipping insertion in model container [2023-11-19 08:02:15,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:15" (1/1) ... [2023-11-19 08:02:16,069 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:16,584 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_02f7c8dc-6383-45f0-81dd-f35fdd099b91/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[26860,26873] [2023-11-19 08:02:16,667 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_02f7c8dc-6383-45f0-81dd-f35fdd099b91/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[32415,32428] [2023-11-19 08:02:17,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:17,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:17,763 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_02f7c8dc-6383-45f0-81dd-f35fdd099b91/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[26860,26873] [2023-11-19 08:02:17,774 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_02f7c8dc-6383-45f0-81dd-f35fdd099b91/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[32415,32428] [2023-11-19 08:02:18,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:18,449 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:18,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18 WrapperNode [2023-11-19 08:02:18,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:18,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:18,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:18,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:18,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:18,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:18,861 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5284 [2023-11-19 08:02:18,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:18,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:18,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:18,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:18,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:18,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:18,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:18,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:19,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:19,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:19,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:19,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:19,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:19,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:19,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:19,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:19,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (1/1) ... [2023-11-19 08:02:19,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:19,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:19,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f7c8dc-6383-45f0-81dd-f35fdd099b91/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:19,762 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:19,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:25,727 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:25,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:25,758 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:02:25,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:25 BoogieIcfgContainer [2023-11-19 08:02:25,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:25,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:25,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:25,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:25,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:15" (1/3) ... [2023-11-19 08:02:25,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b457e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:25, skipping insertion in model container [2023-11-19 08:02:25,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:18" (2/3) ... [2023-11-19 08:02:25,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b457e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:25, skipping insertion in model container [2023-11-19 08:02:25,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:25" (3/3) ... [2023-11-19 08:02:25,787 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2023-11-19 08:02:25,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:25,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:02:25,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:25,919 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59084c68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:25,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:02:25,932 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) [2023-11-19 08:02:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:02:25,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:25,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:25,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:25,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -60564882, now seen corresponding path program 1 times [2023-11-19 08:02:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:25,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878438216] [2023-11-19 08:02:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878438216] [2023-11-19 08:02:26,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878438216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:26,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:26,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837758212] [2023-11-19 08:02:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:26,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:02:26,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:02:26,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:02:26,371 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 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:26,500 INFO L93 Difference]: Finished difference Result 1827 states and 3464 transitions. [2023-11-19 08:02:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:02:26,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 08:02:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:26,533 INFO L225 Difference]: With dead ends: 1827 [2023-11-19 08:02:26,535 INFO L226 Difference]: Without dead ends: 881 [2023-11-19 08:02:26,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:02:26,553 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:26,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:26,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-19 08:02:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2023-11-19 08:02:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 879 states have (on average 1.8930602957906713) internal successors, (1664), 880 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1664 transitions. [2023-11-19 08:02:26,664 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1664 transitions. Word has length 30 [2023-11-19 08:02:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:26,665 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1664 transitions. [2023-11-19 08:02:26,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1664 transitions. [2023-11-19 08:02:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:02:26,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:26,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:26,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:26,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:26,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash -194578388, now seen corresponding path program 1 times [2023-11-19 08:02:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273827250] [2023-11-19 08:02:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:26,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:27,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:27,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273827250] [2023-11-19 08:02:27,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273827250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:27,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:27,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:27,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783894991] [2023-11-19 08:02:27,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:27,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:27,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:27,053 INFO L87 Difference]: Start difference. First operand 881 states and 1664 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) [2023-11-19 08:02:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:27,298 INFO L93 Difference]: Finished difference Result 945 states and 1765 transitions. [2023-11-19 08:02:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:27,299 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 [2023-11-19 08:02:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:27,306 INFO L225 Difference]: With dead ends: 945 [2023-11-19 08:02:27,306 INFO L226 Difference]: Without dead ends: 881 [2023-11-19 08:02:27,310 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 [2023-11-19 08:02:27,312 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 [2023-11-19 08:02:27,313 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] [2023-11-19 08:02:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-19 08:02:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2023-11-19 08:02:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 879 states have (on average 1.8236632536973834) internal successors, (1603), 880 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1603 transitions. [2023-11-19 08:02:27,350 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1603 transitions. Word has length 30 [2023-11-19 08:02:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:27,350 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1603 transitions. [2023-11-19 08:02:27,351 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) [2023-11-19 08:02:27,351 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1603 transitions. [2023-11-19 08:02:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 08:02:27,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:27,353 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] [2023-11-19 08:02:27,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:02:27,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:27,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash -832710315, now seen corresponding path program 1 times [2023-11-19 08:02:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:27,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435690423] [2023-11-19 08:02:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:27,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:27,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435690423] [2023-11-19 08:02:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435690423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:27,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:27,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729357501] [2023-11-19 08:02:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:27,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:27,486 INFO L87 Difference]: Start difference. First operand 881 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:32,108 INFO L93 Difference]: Finished difference Result 2385 states and 4476 transitions. [2023-11-19 08:02:32,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:32,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-11-19 08:02:32,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:32,127 INFO L225 Difference]: With dead ends: 2385 [2023-11-19 08:02:32,130 INFO L226 Difference]: Without dead ends: 1632 [2023-11-19 08:02:32,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:32,140 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 931 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:32,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 241 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 08:02:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-19 08:02:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2023-11-19 08:02:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1630 states have (on average 1.826993865030675) internal successors, (2978), 1631 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2978 transitions. [2023-11-19 08:02:32,218 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2978 transitions. Word has length 48 [2023-11-19 08:02:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:32,219 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 2978 transitions. [2023-11-19 08:02:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2978 transitions. [2023-11-19 08:02:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 08:02:32,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:32,226 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] [2023-11-19 08:02:32,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:32,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:32,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash 255619932, now seen corresponding path program 1 times [2023-11-19 08:02:32,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:32,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232101582] [2023-11-19 08:02:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232101582] [2023-11-19 08:02:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232101582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:32,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:32,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:02:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410604782] [2023-11-19 08:02:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:32,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:02:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:02:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:02:32,706 INFO L87 Difference]: Start difference. First operand 1632 states and 2978 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) [2023-11-19 08:02:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:33,586 INFO L93 Difference]: Finished difference Result 2592 states and 4530 transitions. [2023-11-19 08:02:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:02:33,587 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 [2023-11-19 08:02:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:33,608 INFO L225 Difference]: With dead ends: 2592 [2023-11-19 08:02:33,608 INFO L226 Difference]: Without dead ends: 2532 [2023-11-19 08:02:33,614 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 [2023-11-19 08:02:33,623 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 13373 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13373 SdHoareTripleChecker+Valid, 6388 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:33,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13373 Valid, 6388 Invalid, 374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:02:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2023-11-19 08:02:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1690. [2023-11-19 08:02:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1688 states have (on average 1.819905213270142) internal successors, (3072), 1689 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:33,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3072 transitions. [2023-11-19 08:02:33,698 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3072 transitions. Word has length 90 [2023-11-19 08:02:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:33,701 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 3072 transitions. [2023-11-19 08:02:33,702 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) [2023-11-19 08:02:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3072 transitions. [2023-11-19 08:02:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 08:02:33,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:33,708 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] [2023-11-19 08:02:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:02:33,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:33,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash -578069748, now seen corresponding path program 1 times [2023-11-19 08:02:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984703118] [2023-11-19 08:02:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:34,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:34,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984703118] [2023-11-19 08:02:34,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984703118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:34,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:34,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881339426] [2023-11-19 08:02:34,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:34,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:34,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:34,021 INFO L87 Difference]: Start difference. First operand 1690 states and 3072 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) [2023-11-19 08:02:34,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:34,086 INFO L93 Difference]: Finished difference Result 1915 states and 3435 transitions. [2023-11-19 08:02:34,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:34,087 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 [2023-11-19 08:02:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:34,104 INFO L225 Difference]: With dead ends: 1915 [2023-11-19 08:02:34,104 INFO L226 Difference]: Without dead ends: 1797 [2023-11-19 08:02:34,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:34,106 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 [2023-11-19 08:02:34,107 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] [2023-11-19 08:02:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2023-11-19 08:02:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2023-11-19 08:02:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.8070273284997211) internal successors, (3240), 1794 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3240 transitions. [2023-11-19 08:02:34,172 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3240 transitions. Word has length 92 [2023-11-19 08:02:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:34,173 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3240 transitions. [2023-11-19 08:02:34,174 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) [2023-11-19 08:02:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3240 transitions. [2023-11-19 08:02:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 08:02:34,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:34,177 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] [2023-11-19 08:02:34,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:02:34,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:34,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash -511576236, now seen corresponding path program 1 times [2023-11-19 08:02:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733125331] [2023-11-19 08:02:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:34,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:34,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733125331] [2023-11-19 08:02:34,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733125331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:34,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:34,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:02:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474010725] [2023-11-19 08:02:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:34,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:02:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:02:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:02:34,909 INFO L87 Difference]: Start difference. First operand 1795 states and 3240 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) [2023-11-19 08:02:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:35,657 INFO L93 Difference]: Finished difference Result 2020 states and 3600 transitions. [2023-11-19 08:02:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:02:35,658 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 [2023-11-19 08:02:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:35,673 INFO L225 Difference]: With dead ends: 2020 [2023-11-19 08:02:35,673 INFO L226 Difference]: Without dead ends: 1797 [2023-11-19 08:02:35,675 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 [2023-11-19 08:02:35,676 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 9120 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9120 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:35,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9120 Valid, 2254 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2023-11-19 08:02:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2023-11-19 08:02:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.8059118795315114) internal successors, (3238), 1794 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3238 transitions. [2023-11-19 08:02:35,744 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3238 transitions. Word has length 92 [2023-11-19 08:02:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:35,744 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3238 transitions. [2023-11-19 08:02:35,745 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) [2023-11-19 08:02:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3238 transitions. [2023-11-19 08:02:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 08:02:35,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:35,747 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] [2023-11-19 08:02:35,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:02:35,748 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:35,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash 906283047, now seen corresponding path program 1 times [2023-11-19 08:02:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:35,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687504448] [2023-11-19 08:02:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:35,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:36,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:36,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687504448] [2023-11-19 08:02:36,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687504448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:36,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:36,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:36,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914993497] [2023-11-19 08:02:36,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:36,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:36,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:36,200 INFO L87 Difference]: Start difference. First operand 1795 states and 3238 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) [2023-11-19 08:02:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:36,319 INFO L93 Difference]: Finished difference Result 1986 states and 3547 transitions. [2023-11-19 08:02:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:36,320 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 [2023-11-19 08:02:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:36,335 INFO L225 Difference]: With dead ends: 1986 [2023-11-19 08:02:36,336 INFO L226 Difference]: Without dead ends: 1984 [2023-11-19 08:02:36,337 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 [2023-11-19 08:02:36,338 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 [2023-11-19 08:02:36,338 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] [2023-11-19 08:02:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2023-11-19 08:02:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1801. [2023-11-19 08:02:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1799 states have (on average 1.802668148971651) internal successors, (3243), 1800 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 3243 transitions. [2023-11-19 08:02:36,408 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 3243 transitions. Word has length 93 [2023-11-19 08:02:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:36,409 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 3243 transitions. [2023-11-19 08:02:36,409 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) [2023-11-19 08:02:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 3243 transitions. [2023-11-19 08:02:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:36,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:36,412 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] [2023-11-19 08:02:36,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:02:36,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:36,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1719553388, now seen corresponding path program 1 times [2023-11-19 08:02:36,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:36,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503404306] [2023-11-19 08:02:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:36,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:36,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:36,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503404306] [2023-11-19 08:02:36,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503404306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:36,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:36,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833554485] [2023-11-19 08:02:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:36,554 INFO L87 Difference]: Start difference. First operand 1801 states and 3243 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) [2023-11-19 08:02:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:36,619 INFO L93 Difference]: Finished difference Result 2043 states and 3624 transitions. [2023-11-19 08:02:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:36,620 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 [2023-11-19 08:02:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:36,634 INFO L225 Difference]: With dead ends: 2043 [2023-11-19 08:02:36,634 INFO L226 Difference]: Without dead ends: 1919 [2023-11-19 08:02:36,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:36,637 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 [2023-11-19 08:02:36,637 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] [2023-11-19 08:02:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2023-11-19 08:02:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2023-11-19 08:02:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.7879895561357702) internal successors, (3424), 1916 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3424 transitions. [2023-11-19 08:02:36,720 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3424 transitions. Word has length 94 [2023-11-19 08:02:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:36,721 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 3424 transitions. [2023-11-19 08:02:36,721 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) [2023-11-19 08:02:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3424 transitions. [2023-11-19 08:02:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:36,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:36,723 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] [2023-11-19 08:02:36,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:02:36,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:36,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:36,724 INFO L85 PathProgramCache]: Analyzing trace with hash 593433492, now seen corresponding path program 1 times [2023-11-19 08:02:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:36,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149013723] [2023-11-19 08:02:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:36,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:36,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:36,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149013723] [2023-11-19 08:02:36,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149013723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:36,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:36,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919723473] [2023-11-19 08:02:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:36,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:36,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:36,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:36,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:36,866 INFO L87 Difference]: Start difference. First operand 1917 states and 3424 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) [2023-11-19 08:02:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:36,943 INFO L93 Difference]: Finished difference Result 2579 states and 4464 transitions. [2023-11-19 08:02:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:36,944 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 [2023-11-19 08:02:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:36,960 INFO L225 Difference]: With dead ends: 2579 [2023-11-19 08:02:36,961 INFO L226 Difference]: Without dead ends: 2236 [2023-11-19 08:02:36,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:36,963 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 [2023-11-19 08:02:36,964 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] [2023-11-19 08:02:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2023-11-19 08:02:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2234. [2023-11-19 08:02:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 2232 states have (on average 1.7544802867383513) internal successors, (3916), 2233 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3916 transitions. [2023-11-19 08:02:37,062 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3916 transitions. Word has length 94 [2023-11-19 08:02:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:37,063 INFO L495 AbstractCegarLoop]: Abstraction has 2234 states and 3916 transitions. [2023-11-19 08:02:37,064 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) [2023-11-19 08:02:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3916 transitions. [2023-11-19 08:02:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:37,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:37,066 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] [2023-11-19 08:02:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:02:37,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:37,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1596549740, now seen corresponding path program 1 times [2023-11-19 08:02:37,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:37,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947810466] [2023-11-19 08:02:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:37,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:37,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:37,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947810466] [2023-11-19 08:02:37,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947810466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:37,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:37,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507329063] [2023-11-19 08:02:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:37,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:37,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:37,217 INFO L87 Difference]: Start difference. First operand 2234 states and 3916 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) [2023-11-19 08:02:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:37,311 INFO L93 Difference]: Finished difference Result 3506 states and 5898 transitions. [2023-11-19 08:02:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:37,312 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 [2023-11-19 08:02:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:37,330 INFO L225 Difference]: With dead ends: 3506 [2023-11-19 08:02:37,331 INFO L226 Difference]: Without dead ends: 2846 [2023-11-19 08:02:37,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:37,333 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 [2023-11-19 08:02:37,334 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] [2023-11-19 08:02:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-11-19 08:02:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2023-11-19 08:02:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2842 states have (on average 1.7072484166080226) internal successors, (4852), 2843 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4852 transitions. [2023-11-19 08:02:37,434 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4852 transitions. Word has length 94 [2023-11-19 08:02:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:37,434 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 4852 transitions. [2023-11-19 08:02:37,434 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) [2023-11-19 08:02:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4852 transitions. [2023-11-19 08:02:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:37,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:37,436 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] [2023-11-19 08:02:37,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:02:37,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:37,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1332693356, now seen corresponding path program 1 times [2023-11-19 08:02:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:37,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419415772] [2023-11-19 08:02:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:37,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:37,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419415772] [2023-11-19 08:02:37,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419415772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:37,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896856552] [2023-11-19 08:02:37,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:37,542 INFO L87 Difference]: Start difference. First operand 2844 states and 4852 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) [2023-11-19 08:02:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:37,653 INFO L93 Difference]: Finished difference Result 5288 states and 8622 transitions. [2023-11-19 08:02:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:37,654 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 [2023-11-19 08:02:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:37,679 INFO L225 Difference]: With dead ends: 5288 [2023-11-19 08:02:37,679 INFO L226 Difference]: Without dead ends: 4018 [2023-11-19 08:02:37,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:37,682 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 [2023-11-19 08:02:37,683 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] [2023-11-19 08:02:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2023-11-19 08:02:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 4016. [2023-11-19 08:02:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4014 states have (on average 1.6512207274539112) internal successors, (6628), 4015 states have internal predecessors, (6628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 6628 transitions. [2023-11-19 08:02:37,938 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 6628 transitions. Word has length 94 [2023-11-19 08:02:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:37,938 INFO L495 AbstractCegarLoop]: Abstraction has 4016 states and 6628 transitions. [2023-11-19 08:02:37,939 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) [2023-11-19 08:02:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 6628 transitions. [2023-11-19 08:02:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:37,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:37,940 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] [2023-11-19 08:02:37,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:02:37,941 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:37,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -94431340, now seen corresponding path program 1 times [2023-11-19 08:02:37,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:37,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868006838] [2023-11-19 08:02:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:37,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:38,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868006838] [2023-11-19 08:02:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868006838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:38,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500421440] [2023-11-19 08:02:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:38,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:38,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:38,048 INFO L87 Difference]: Start difference. First operand 4016 states and 6628 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) [2023-11-19 08:02:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:38,236 INFO L93 Difference]: Finished difference Result 8708 states and 13782 transitions. [2023-11-19 08:02:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:38,237 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 [2023-11-19 08:02:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:38,256 INFO L225 Difference]: With dead ends: 8708 [2023-11-19 08:02:38,257 INFO L226 Difference]: Without dead ends: 6266 [2023-11-19 08:02:38,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:38,262 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 [2023-11-19 08:02:38,263 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] [2023-11-19 08:02:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2023-11-19 08:02:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6264. [2023-11-19 08:02:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6264 states, 6262 states have (on average 1.5950175662727564) internal successors, (9988), 6263 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 9988 transitions. [2023-11-19 08:02:38,563 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 9988 transitions. Word has length 94 [2023-11-19 08:02:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:38,564 INFO L495 AbstractCegarLoop]: Abstraction has 6264 states and 9988 transitions. [2023-11-19 08:02:38,565 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) [2023-11-19 08:02:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 9988 transitions. [2023-11-19 08:02:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:38,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:38,567 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] [2023-11-19 08:02:38,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:02:38,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:38,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1985067156, now seen corresponding path program 1 times [2023-11-19 08:02:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:38,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847002997] [2023-11-19 08:02:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:38,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:38,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:38,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847002997] [2023-11-19 08:02:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847002997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:38,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:38,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106662381] [2023-11-19 08:02:38,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:38,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:38,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:38,716 INFO L87 Difference]: Start difference. First operand 6264 states and 9988 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) [2023-11-19 08:02:39,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:39,080 INFO L93 Difference]: Finished difference Result 15260 states and 23526 transitions. [2023-11-19 08:02:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:39,081 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 [2023-11-19 08:02:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:39,108 INFO L225 Difference]: With dead ends: 15260 [2023-11-19 08:02:39,108 INFO L226 Difference]: Without dead ends: 10570 [2023-11-19 08:02:39,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:39,118 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 [2023-11-19 08:02:39,119 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] [2023-11-19 08:02:39,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2023-11-19 08:02:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 10568. [2023-11-19 08:02:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10568 states, 10566 states have (on average 1.5449555176982774) internal successors, (16324), 10567 states have internal predecessors, (16324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10568 states to 10568 states and 16324 transitions. [2023-11-19 08:02:39,650 INFO L78 Accepts]: Start accepts. Automaton has 10568 states and 16324 transitions. Word has length 94 [2023-11-19 08:02:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:39,650 INFO L495 AbstractCegarLoop]: Abstraction has 10568 states and 16324 transitions. [2023-11-19 08:02:39,650 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) [2023-11-19 08:02:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 10568 states and 16324 transitions. [2023-11-19 08:02:39,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:39,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:39,652 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] [2023-11-19 08:02:39,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:02:39,653 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:39,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:39,654 INFO L85 PathProgramCache]: Analyzing trace with hash -528967276, now seen corresponding path program 1 times [2023-11-19 08:02:39,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:39,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438775506] [2023-11-19 08:02:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:39,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:39,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:39,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438775506] [2023-11-19 08:02:39,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438775506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:39,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:39,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:39,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998808231] [2023-11-19 08:02:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:39,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:39,793 INFO L87 Difference]: Start difference. First operand 10568 states and 16324 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) [2023-11-19 08:02:40,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:40,341 INFO L93 Difference]: Finished difference Result 27788 states and 41862 transitions. [2023-11-19 08:02:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:40,342 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 [2023-11-19 08:02:40,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:40,385 INFO L225 Difference]: With dead ends: 27788 [2023-11-19 08:02:40,386 INFO L226 Difference]: Without dead ends: 18794 [2023-11-19 08:02:40,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:40,402 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 [2023-11-19 08:02:40,402 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] [2023-11-19 08:02:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2023-11-19 08:02:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 18792. [2023-11-19 08:02:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18792 states, 18790 states have (on average 1.502288451303885) internal successors, (28228), 18791 states have internal predecessors, (28228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18792 states to 18792 states and 28228 transitions. [2023-11-19 08:02:41,389 INFO L78 Accepts]: Start accepts. Automaton has 18792 states and 28228 transitions. Word has length 94 [2023-11-19 08:02:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:41,390 INFO L495 AbstractCegarLoop]: Abstraction has 18792 states and 28228 transitions. [2023-11-19 08:02:41,390 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) [2023-11-19 08:02:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 18792 states and 28228 transitions. [2023-11-19 08:02:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:02:41,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:41,392 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] [2023-11-19 08:02:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:02:41,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:41,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1759464300, now seen corresponding path program 1 times [2023-11-19 08:02:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:41,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245682110] [2023-11-19 08:02:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:41,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245682110] [2023-11-19 08:02:41,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245682110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:41,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:41,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483125231] [2023-11-19 08:02:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:41,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:41,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:41,517 INFO L87 Difference]: Start difference. First operand 18792 states and 28228 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) [2023-11-19 08:02:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:42,953 INFO L93 Difference]: Finished difference Result 51692 states and 76230 transitions. [2023-11-19 08:02:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:42,953 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 [2023-11-19 08:02:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:43,049 INFO L225 Difference]: With dead ends: 51692 [2023-11-19 08:02:43,050 INFO L226 Difference]: Without dead ends: 34474 [2023-11-19 08:02:43,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:43,081 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 [2023-11-19 08:02:43,081 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] [2023-11-19 08:02:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34474 states. [2023-11-19 08:02:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34474 to 34472. [2023-11-19 08:02:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34472 states, 34470 states have (on average 1.4650420655642589) internal successors, (50500), 34471 states have internal predecessors, (50500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34472 states to 34472 states and 50500 transitions. [2023-11-19 08:02:45,193 INFO L78 Accepts]: Start accepts. Automaton has 34472 states and 50500 transitions. Word has length 94 [2023-11-19 08:02:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:45,194 INFO L495 AbstractCegarLoop]: Abstraction has 34472 states and 50500 transitions. [2023-11-19 08:02:45,194 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) [2023-11-19 08:02:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 34472 states and 50500 transitions. [2023-11-19 08:02:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-19 08:02:45,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:45,208 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] [2023-11-19 08:02:45,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:02:45,209 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:45,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1733023753, now seen corresponding path program 1 times [2023-11-19 08:02:45,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:45,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601977236] [2023-11-19 08:02:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:45,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:02:45,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601977236] [2023-11-19 08:02:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601977236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:45,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:02:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701985670] [2023-11-19 08:02:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:45,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:02:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:02:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:02:45,680 INFO L87 Difference]: Start difference. First operand 34472 states and 50500 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) [2023-11-19 08:02:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:53,162 INFO L93 Difference]: Finished difference Result 294458 states and 426573 transitions. [2023-11-19 08:02:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:02:53,163 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 119 [2023-11-19 08:02:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:54,081 INFO L225 Difference]: With dead ends: 294458 [2023-11-19 08:02:54,081 INFO L226 Difference]: Without dead ends: 271416 [2023-11-19 08:02:54,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:02:54,410 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 11707 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11707 SdHoareTripleChecker+Valid, 5248 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:54,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11707 Valid, 5248 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:02:54,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271416 states.