./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya --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 c1928fd99ddae1c837272e074c24407d4011054550d928a14afc6eb7550c755f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:10:32,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:10:32,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:10:32,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:10:32,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:10:32,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:10:32,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:10:32,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:10:32,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:10:32,375 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:10:32,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:10:32,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:10:32,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:10:32,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:10:32,378 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:10:32,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:10:32,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:10:32,380 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:10:32,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:10:32,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:10:32,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:10:32,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:10:32,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:10:32,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:10:32,384 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:10:32,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:10:32,385 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:10:32,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:10:32,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:10:32,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:10:32,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:10:32,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:32,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:10:32,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:10:32,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:10:32,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:10:32,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:10:32,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:10:32,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:10:32,388 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:10:32,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:10:32,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:10:32,389 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_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1928fd99ddae1c837272e074c24407d4011054550d928a14afc6eb7550c755f [2023-11-29 04:10:32,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:10:32,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:10:32,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:10:32,606 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:10:32,606 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:10:32,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-29 04:10:35,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:10:35,640 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:10:35,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-29 04:10:35,656 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/data/7faabb243/605dba50fc7a4d2384e845b3ae5b68b5/FLAG325163abb [2023-11-29 04:10:35,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/data/7faabb243/605dba50fc7a4d2384e845b3ae5b68b5 [2023-11-29 04:10:35,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:10:35,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:10:35,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:35,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:10:35,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:10:35,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:35" (1/1) ... [2023-11-29 04:10:35,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63997191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:35, skipping insertion in model container [2023-11-29 04:10:35,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:35" (1/1) ... [2023-11-29 04:10:35,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:10:36,142 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_234e353c-a29a-4bf7-b287-bcb0c453954e/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[24251,24264] [2023-11-29 04:10:36,191 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_234e353c-a29a-4bf7-b287-bcb0c453954e/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[28044,28057] [2023-11-29 04:10:36,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:36,335 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:10:36,476 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_234e353c-a29a-4bf7-b287-bcb0c453954e/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[24251,24264] [2023-11-29 04:10:36,514 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_234e353c-a29a-4bf7-b287-bcb0c453954e/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[28044,28057] [2023-11-29 04:10:36,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:36,633 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:10:36,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36 WrapperNode [2023-11-29 04:10:36,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:36,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:36,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:10:36,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:10:36,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,739 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2455 [2023-11-29 04:10:36,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:36,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:10:36,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:10:36,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:10:36,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,791 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:10:36,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:10:36,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:10:36,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:10:36,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:10:36,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (1/1) ... [2023-11-29 04:10:36,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:36,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:36,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:10:36,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234e353c-a29a-4bf7-b287-bcb0c453954e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:10:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:10:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:10:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:10:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:10:37,093 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:10:37,095 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:10:38,616 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:10:38,682 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:10:38,682 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:10:38,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:38 BoogieIcfgContainer [2023-11-29 04:10:38,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:10:38,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:10:38,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:10:38,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:10:38,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:10:35" (1/3) ... [2023-11-29 04:10:38,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb9d274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:38, skipping insertion in model container [2023-11-29 04:10:38,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:36" (2/3) ... [2023-11-29 04:10:38,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb9d274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:38, skipping insertion in model container [2023-11-29 04:10:38,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:38" (3/3) ... [2023-11-29 04:10:38,692 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-29 04:10:38,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:10:38,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:10:38,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:10:38,786 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;@b044086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:10:38,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 04:10:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 618 states, 608 states have (on average 1.8075657894736843) internal successors, (1099), 617 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-11-29 04:10:38,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:38,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:38,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:38,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1062635017, now seen corresponding path program 1 times [2023-11-29 04:10:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:38,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604974093] [2023-11-29 04:10:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:38,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:40,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:40,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604974093] [2023-11-29 04:10:40,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604974093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:40,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:40,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610713605] [2023-11-29 04:10:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:40,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:10:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:10:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:10:40,118 INFO L87 Difference]: Start difference. First operand has 618 states, 608 states have (on average 1.8075657894736843) internal successors, (1099), 617 states have internal predecessors, (1099), 0 states have call successors, (0), 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 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:40,340 INFO L93 Difference]: Finished difference Result 1820 states and 3238 transitions. [2023-11-29 04:10:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:10:40,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2023-11-29 04:10:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:40,363 INFO L225 Difference]: With dead ends: 1820 [2023-11-29 04:10:40,364 INFO L226 Difference]: Without dead ends: 1192 [2023-11-29 04:10:40,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:40,373 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 2406 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:40,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 2803 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2023-11-29 04:10:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1159. [2023-11-29 04:10:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1157 states have (on average 1.5496974935177181) internal successors, (1793), 1158 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:40,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1793 transitions. [2023-11-29 04:10:40,470 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1793 transitions. Word has length 230 [2023-11-29 04:10:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:40,471 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1793 transitions. [2023-11-29 04:10:40,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1793 transitions. [2023-11-29 04:10:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-29 04:10:40,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:40,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:40,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:10:40,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:40,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash 671043909, now seen corresponding path program 1 times [2023-11-29 04:10:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:40,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764725699] [2023-11-29 04:10:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764725699] [2023-11-29 04:10:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764725699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:40,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:40,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491089911] [2023-11-29 04:10:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:40,719 INFO L87 Difference]: Start difference. First operand 1159 states and 1793 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:40,832 INFO L93 Difference]: Finished difference Result 3313 states and 5091 transitions. [2023-11-29 04:10:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:40,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2023-11-29 04:10:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:40,847 INFO L225 Difference]: With dead ends: 3313 [2023-11-29 04:10:40,848 INFO L226 Difference]: Without dead ends: 2278 [2023-11-29 04:10:40,850 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 [2023-11-29 04:10:40,851 INFO L413 NwaCegarLoop]: 1774 mSDtfsCounter, 811 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:40,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2672 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2023-11-29 04:10:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2247. [2023-11-29 04:10:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2245 states have (on average 1.5407572383073496) internal successors, (3459), 2246 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3459 transitions. [2023-11-29 04:10:40,922 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3459 transitions. Word has length 232 [2023-11-29 04:10:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:40,923 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3459 transitions. [2023-11-29 04:10:40,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3459 transitions. [2023-11-29 04:10:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-29 04:10:40,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:40,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:40,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:10:40,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:40,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:40,932 INFO L85 PathProgramCache]: Analyzing trace with hash 879852064, now seen corresponding path program 1 times [2023-11-29 04:10:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386073963] [2023-11-29 04:10:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:41,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:41,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386073963] [2023-11-29 04:10:41,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386073963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:41,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:41,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:41,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652310905] [2023-11-29 04:10:41,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:41,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:41,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:41,110 INFO L87 Difference]: Start difference. First operand 2247 states and 3459 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:41,203 INFO L93 Difference]: Finished difference Result 6676 states and 10263 transitions. [2023-11-29 04:10:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:41,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2023-11-29 04:10:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:41,228 INFO L225 Difference]: With dead ends: 6676 [2023-11-29 04:10:41,229 INFO L226 Difference]: Without dead ends: 4466 [2023-11-29 04:10:41,232 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 [2023-11-29 04:10:41,234 INFO L413 NwaCegarLoop]: 1868 mSDtfsCounter, 932 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:41,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 2800 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2023-11-29 04:10:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 2266. [2023-11-29 04:10:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 2264 states have (on average 1.5401943462897527) internal successors, (3487), 2265 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 3487 transitions. [2023-11-29 04:10:41,327 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 3487 transitions. Word has length 232 [2023-11-29 04:10:41,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:41,328 INFO L495 AbstractCegarLoop]: Abstraction has 2266 states and 3487 transitions. [2023-11-29 04:10:41,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 3487 transitions. [2023-11-29 04:10:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 04:10:41,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:41,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:41,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:10:41,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:41,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:41,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1515422303, now seen corresponding path program 1 times [2023-11-29 04:10:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584925160] [2023-11-29 04:10:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:41,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:41,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584925160] [2023-11-29 04:10:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584925160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579120630] [2023-11-29 04:10:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:41,471 INFO L87 Difference]: Start difference. First operand 2266 states and 3487 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:41,550 INFO L93 Difference]: Finished difference Result 6695 states and 10284 transitions. [2023-11-29 04:10:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:41,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2023-11-29 04:10:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:41,573 INFO L225 Difference]: With dead ends: 6695 [2023-11-29 04:10:41,573 INFO L226 Difference]: Without dead ends: 4484 [2023-11-29 04:10:41,577 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 [2023-11-29 04:10:41,578 INFO L413 NwaCegarLoop]: 1868 mSDtfsCounter, 927 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:41,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 2800 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2023-11-29 04:10:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 2284. [2023-11-29 04:10:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2282 states have (on average 1.537248028045574) internal successors, (3508), 2283 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3508 transitions. [2023-11-29 04:10:41,669 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3508 transitions. Word has length 233 [2023-11-29 04:10:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:41,669 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3508 transitions. [2023-11-29 04:10:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3508 transitions. [2023-11-29 04:10:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 04:10:41,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:41,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:41,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:10:41,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:41,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash 191649677, now seen corresponding path program 1 times [2023-11-29 04:10:41,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:41,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323475638] [2023-11-29 04:10:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:41,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323475638] [2023-11-29 04:10:42,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323475638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:42,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:42,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241817972] [2023-11-29 04:10:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:42,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:42,262 INFO L87 Difference]: Start difference. First operand 2284 states and 3508 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:42,428 INFO L93 Difference]: Finished difference Result 6550 states and 10025 transitions. [2023-11-29 04:10:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2023-11-29 04:10:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:42,452 INFO L225 Difference]: With dead ends: 6550 [2023-11-29 04:10:42,452 INFO L226 Difference]: Without dead ends: 4308 [2023-11-29 04:10:42,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:42,457 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 2961 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2961 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:42,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2961 Valid, 2399 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2023-11-29 04:10:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 4283. [2023-11-29 04:10:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 4281 states have (on average 1.51927119831815) internal successors, (6504), 4282 states have internal predecessors, (6504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 6504 transitions. [2023-11-29 04:10:42,568 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 6504 transitions. Word has length 234 [2023-11-29 04:10:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:42,569 INFO L495 AbstractCegarLoop]: Abstraction has 4283 states and 6504 transitions. [2023-11-29 04:10:42,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 6504 transitions. [2023-11-29 04:10:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 04:10:42,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:42,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:10:42,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:42,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1516916471, now seen corresponding path program 1 times [2023-11-29 04:10:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340819630] [2023-11-29 04:10:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:43,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340819630] [2023-11-29 04:10:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340819630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:43,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:43,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928809135] [2023-11-29 04:10:43,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:43,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:10:43,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:10:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:10:43,124 INFO L87 Difference]: Start difference. First operand 4283 states and 6504 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:43,281 INFO L93 Difference]: Finished difference Result 12483 states and 18922 transitions. [2023-11-29 04:10:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-11-29 04:10:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:43,350 INFO L225 Difference]: With dead ends: 12483 [2023-11-29 04:10:43,350 INFO L226 Difference]: Without dead ends: 8325 [2023-11-29 04:10:43,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:43,356 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 2008 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:43,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 2389 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8325 states. [2023-11-29 04:10:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8325 to 8263. [2023-11-29 04:10:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8263 states, 8261 states have (on average 1.5061130613727152) internal successors, (12442), 8262 states have internal predecessors, (12442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 12442 transitions. [2023-11-29 04:10:43,529 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 12442 transitions. Word has length 236 [2023-11-29 04:10:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:43,529 INFO L495 AbstractCegarLoop]: Abstraction has 8263 states and 12442 transitions. [2023-11-29 04:10:43,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 12442 transitions. [2023-11-29 04:10:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 04:10:43,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:43,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:43,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:10:43,542 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:43,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1094111260, now seen corresponding path program 1 times [2023-11-29 04:10:43,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:43,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4929009] [2023-11-29 04:10:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:43,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:43,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:43,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4929009] [2023-11-29 04:10:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4929009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:43,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498091382] [2023-11-29 04:10:43,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:43,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:43,663 INFO L87 Difference]: Start difference. First operand 8263 states and 12442 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:43,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:43,770 INFO L93 Difference]: Finished difference Result 23917 states and 35876 transitions. [2023-11-29 04:10:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:43,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 04:10:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:43,800 INFO L225 Difference]: With dead ends: 23917 [2023-11-29 04:10:43,800 INFO L226 Difference]: Without dead ends: 16167 [2023-11-29 04:10:43,809 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 [2023-11-29 04:10:43,810 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 787 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:43,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2678 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16167 states. [2023-11-29 04:10:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16167 to 16105. [2023-11-29 04:10:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16105 states, 16103 states have (on average 1.4957461342606968) internal successors, (24086), 16104 states have internal predecessors, (24086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16105 states to 16105 states and 24086 transitions. [2023-11-29 04:10:44,143 INFO L78 Accepts]: Start accepts. Automaton has 16105 states and 24086 transitions. Word has length 238 [2023-11-29 04:10:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:44,143 INFO L495 AbstractCegarLoop]: Abstraction has 16105 states and 24086 transitions. [2023-11-29 04:10:44,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:44,144 INFO L276 IsEmpty]: Start isEmpty. Operand 16105 states and 24086 transitions. [2023-11-29 04:10:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 04:10:44,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:44,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:10:44,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:44,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:44,177 INFO L85 PathProgramCache]: Analyzing trace with hash -180127433, now seen corresponding path program 1 times [2023-11-29 04:10:44,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006752855] [2023-11-29 04:10:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:44,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:44,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:44,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006752855] [2023-11-29 04:10:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006752855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:44,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755827721] [2023-11-29 04:10:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:44,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:44,316 INFO L87 Difference]: Start difference. First operand 16105 states and 24086 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:44,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:44,408 INFO L93 Difference]: Finished difference Result 47827 states and 71462 transitions. [2023-11-29 04:10:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 04:10:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:44,447 INFO L225 Difference]: With dead ends: 47827 [2023-11-29 04:10:44,447 INFO L226 Difference]: Without dead ends: 31993 [2023-11-29 04:10:44,464 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 [2023-11-29 04:10:44,465 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 899 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:44,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 2767 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31993 states. [2023-11-29 04:10:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31993 to 16219. [2023-11-29 04:10:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16219 states, 16217 states have (on average 1.4955910464327558) internal successors, (24254), 16218 states have internal predecessors, (24254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16219 states to 16219 states and 24254 transitions. [2023-11-29 04:10:44,874 INFO L78 Accepts]: Start accepts. Automaton has 16219 states and 24254 transitions. Word has length 238 [2023-11-29 04:10:44,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:44,874 INFO L495 AbstractCegarLoop]: Abstraction has 16219 states and 24254 transitions. [2023-11-29 04:10:44,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 16219 states and 24254 transitions. [2023-11-29 04:10:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-29 04:10:44,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:44,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:44,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:10:44,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:44,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1480649584, now seen corresponding path program 1 times [2023-11-29 04:10:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:44,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270425732] [2023-11-29 04:10:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:44,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:45,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:45,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270425732] [2023-11-29 04:10:45,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270425732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:45,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:45,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660350133] [2023-11-29 04:10:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:45,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:45,061 INFO L87 Difference]: Start difference. First operand 16219 states and 24254 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:45,233 INFO L93 Difference]: Finished difference Result 47889 states and 71500 transitions. [2023-11-29 04:10:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:45,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2023-11-29 04:10:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:45,337 INFO L225 Difference]: With dead ends: 47889 [2023-11-29 04:10:45,337 INFO L226 Difference]: Without dead ends: 32089 [2023-11-29 04:10:45,351 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 [2023-11-29 04:10:45,353 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 894 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:45,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 2767 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32089 states. [2023-11-29 04:10:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32089 to 16315. [2023-11-29 04:10:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16315 states, 16313 states have (on average 1.4935327652792252) internal successors, (24364), 16314 states have internal predecessors, (24364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16315 states to 16315 states and 24364 transitions. [2023-11-29 04:10:45,708 INFO L78 Accepts]: Start accepts. Automaton has 16315 states and 24364 transitions. Word has length 239 [2023-11-29 04:10:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:45,708 INFO L495 AbstractCegarLoop]: Abstraction has 16315 states and 24364 transitions. [2023-11-29 04:10:45,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16315 states and 24364 transitions. [2023-11-29 04:10:45,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-29 04:10:45,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:45,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:45,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:10:45,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:45,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:45,736 INFO L85 PathProgramCache]: Analyzing trace with hash 667146913, now seen corresponding path program 1 times [2023-11-29 04:10:45,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:45,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385679883] [2023-11-29 04:10:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385679883] [2023-11-29 04:10:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385679883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:45,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:45,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060064956] [2023-11-29 04:10:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:45,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:45,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:45,939 INFO L87 Difference]: Start difference. First operand 16315 states and 24364 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:46,114 INFO L93 Difference]: Finished difference Result 47121 states and 70176 transitions. [2023-11-29 04:10:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2023-11-29 04:10:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:46,153 INFO L225 Difference]: With dead ends: 47121 [2023-11-29 04:10:46,154 INFO L226 Difference]: Without dead ends: 31707 [2023-11-29 04:10:46,170 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 [2023-11-29 04:10:46,171 INFO L413 NwaCegarLoop]: 1807 mSDtfsCounter, 780 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:46,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 2709 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:46,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31707 states. [2023-11-29 04:10:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31707 to 31645. [2023-11-29 04:10:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31645 states, 31643 states have (on average 1.482539582214076) internal successors, (46912), 31644 states have internal predecessors, (46912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31645 states to 31645 states and 46912 transitions. [2023-11-29 04:10:46,801 INFO L78 Accepts]: Start accepts. Automaton has 31645 states and 46912 transitions. Word has length 240 [2023-11-29 04:10:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:46,802 INFO L495 AbstractCegarLoop]: Abstraction has 31645 states and 46912 transitions. [2023-11-29 04:10:46,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 31645 states and 46912 transitions. [2023-11-29 04:10:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-29 04:10:46,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:46,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:46,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:10:46,917 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:46,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash 789015396, now seen corresponding path program 1 times [2023-11-29 04:10:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:46,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543030789] [2023-11-29 04:10:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:46,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:47,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:47,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543030789] [2023-11-29 04:10:47,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543030789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:47,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:47,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:47,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509806612] [2023-11-29 04:10:47,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:47,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:47,506 INFO L87 Difference]: Start difference. First operand 31645 states and 46912 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:47,917 INFO L93 Difference]: Finished difference Result 92293 states and 136488 transitions. [2023-11-29 04:10:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2023-11-29 04:10:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:47,982 INFO L225 Difference]: With dead ends: 92293 [2023-11-29 04:10:47,983 INFO L226 Difference]: Without dead ends: 61028 [2023-11-29 04:10:48,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:48,001 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 2573 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:48,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2573 Valid, 2295 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61028 states. [2023-11-29 04:10:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61028 to 61005. [2023-11-29 04:10:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61005 states, 61003 states have (on average 1.467485205645624) internal successors, (89521), 61004 states have internal predecessors, (89521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61005 states to 61005 states and 89521 transitions. [2023-11-29 04:10:48,712 INFO L78 Accepts]: Start accepts. Automaton has 61005 states and 89521 transitions. Word has length 240 [2023-11-29 04:10:48,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:48,712 INFO L495 AbstractCegarLoop]: Abstraction has 61005 states and 89521 transitions. [2023-11-29 04:10:48,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 61005 states and 89521 transitions. [2023-11-29 04:10:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-29 04:10:48,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:48,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:10:48,746 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:48,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2139098230, now seen corresponding path program 1 times [2023-11-29 04:10:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247530935] [2023-11-29 04:10:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:49,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:49,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247530935] [2023-11-29 04:10:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247530935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:49,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:49,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271802621] [2023-11-29 04:10:49,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:49,316 INFO L87 Difference]: Start difference. First operand 61005 states and 89521 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:49,835 INFO L93 Difference]: Finished difference Result 179559 states and 263136 transitions. [2023-11-29 04:10:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2023-11-29 04:10:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:50,072 INFO L225 Difference]: With dead ends: 179559 [2023-11-29 04:10:50,072 INFO L226 Difference]: Without dead ends: 119160 [2023-11-29 04:10:50,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:50,092 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 2093 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:50,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 3262 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119160 states. [2023-11-29 04:10:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119160 to 119145. [2023-11-29 04:10:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119145 states, 119143 states have (on average 1.4554023316518805) internal successors, (173401), 119144 states have internal predecessors, (173401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119145 states to 119145 states and 173401 transitions. [2023-11-29 04:10:51,339 INFO L78 Accepts]: Start accepts. Automaton has 119145 states and 173401 transitions. Word has length 242 [2023-11-29 04:10:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:51,339 INFO L495 AbstractCegarLoop]: Abstraction has 119145 states and 173401 transitions. [2023-11-29 04:10:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 119145 states and 173401 transitions. [2023-11-29 04:10:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-29 04:10:51,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:51,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:51,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:10:51,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -904309472, now seen corresponding path program 1 times [2023-11-29 04:10:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390518412] [2023-11-29 04:10:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:51,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:52,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:52,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390518412] [2023-11-29 04:10:52,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390518412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:52,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:52,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:52,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260922057] [2023-11-29 04:10:52,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:52,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:10:52,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:10:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:10:52,235 INFO L87 Difference]: Start difference. First operand 119145 states and 173401 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:52,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:52,947 INFO L93 Difference]: Finished difference Result 257729 states and 375202 transitions. [2023-11-29 04:10:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:52,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2023-11-29 04:10:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:53,084 INFO L225 Difference]: With dead ends: 257729 [2023-11-29 04:10:53,084 INFO L226 Difference]: Without dead ends: 140189 [2023-11-29 04:10:53,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:53,272 INFO L413 NwaCegarLoop]: 1482 mSDtfsCounter, 1972 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1972 Valid, 2374 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140189 states. [2023-11-29 04:10:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140189 to 119631. [2023-11-29 04:10:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119631 states, 119629 states have (on average 1.454429945916124) internal successors, (173992), 119630 states have internal predecessors, (173992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119631 states to 119631 states and 173992 transitions. [2023-11-29 04:10:54,782 INFO L78 Accepts]: Start accepts. Automaton has 119631 states and 173992 transitions. Word has length 242 [2023-11-29 04:10:54,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:54,782 INFO L495 AbstractCegarLoop]: Abstraction has 119631 states and 173992 transitions. [2023-11-29 04:10:54,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 119631 states and 173992 transitions. [2023-11-29 04:10:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-29 04:10:55,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:55,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:55,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:10:55,075 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:55,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2088267703, now seen corresponding path program 1 times [2023-11-29 04:10:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051819356] [2023-11-29 04:10:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:55,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:55,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051819356] [2023-11-29 04:10:55,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051819356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:55,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:55,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96600688] [2023-11-29 04:10:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:55,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:55,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:55,187 INFO L87 Difference]: Start difference. First operand 119631 states and 173992 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:56,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:56,164 INFO L93 Difference]: Finished difference Result 354501 states and 515156 transitions. [2023-11-29 04:10:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:56,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2023-11-29 04:10:56,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:56,379 INFO L225 Difference]: With dead ends: 354501 [2023-11-29 04:10:56,379 INFO L226 Difference]: Without dead ends: 237069 [2023-11-29 04:10:56,429 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 [2023-11-29 04:10:56,430 INFO L413 NwaCegarLoop]: 1802 mSDtfsCounter, 866 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:56,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 2734 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:56,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237069 states. [2023-11-29 04:10:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237069 to 120549. [2023-11-29 04:10:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120549 states, 120547 states have (on average 1.4536073066936548) internal successors, (175228), 120548 states have internal predecessors, (175228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120549 states to 120549 states and 175228 transitions. [2023-11-29 04:10:58,649 INFO L78 Accepts]: Start accepts. Automaton has 120549 states and 175228 transitions. Word has length 244 [2023-11-29 04:10:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:58,649 INFO L495 AbstractCegarLoop]: Abstraction has 120549 states and 175228 transitions. [2023-11-29 04:10:58,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:58,650 INFO L276 IsEmpty]: Start isEmpty. Operand 120549 states and 175228 transitions. [2023-11-29 04:10:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-29 04:10:58,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:58,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:10:58,705 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:58,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1930403812, now seen corresponding path program 1 times [2023-11-29 04:10:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:58,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167058597] [2023-11-29 04:10:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:58,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:58,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167058597] [2023-11-29 04:10:58,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167058597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:58,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:58,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:58,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914770680] [2023-11-29 04:10:58,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:58,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:58,814 INFO L87 Difference]: Start difference. First operand 120549 states and 175228 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:59,711 INFO L93 Difference]: Finished difference Result 355242 states and 515843 transitions. [2023-11-29 04:10:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:59,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2023-11-29 04:10:59,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:59,909 INFO L225 Difference]: With dead ends: 355242 [2023-11-29 04:10:59,909 INFO L226 Difference]: Without dead ends: 238074 [2023-11-29 04:10:59,960 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 [2023-11-29 04:10:59,960 INFO L413 NwaCegarLoop]: 1802 mSDtfsCounter, 861 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:59,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 2734 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:11:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238074 states. [2023-11-29 04:11:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238074 to 121410. [2023-11-29 04:11:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121410 states, 121408 states have (on average 1.4515023721665787) internal successors, (176224), 121409 states have internal predecessors, (176224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121410 states to 121410 states and 176224 transitions. [2023-11-29 04:11:02,615 INFO L78 Accepts]: Start accepts. Automaton has 121410 states and 176224 transitions. Word has length 245 [2023-11-29 04:11:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:02,616 INFO L495 AbstractCegarLoop]: Abstraction has 121410 states and 176224 transitions. [2023-11-29 04:11:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 121410 states and 176224 transitions. [2023-11-29 04:11:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-29 04:11:02,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:02,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:11:02,695 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:02,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:02,695 INFO L85 PathProgramCache]: Analyzing trace with hash -825508746, now seen corresponding path program 1 times [2023-11-29 04:11:02,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:02,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141746826] [2023-11-29 04:11:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:02,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:03,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141746826] [2023-11-29 04:11:03,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141746826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:03,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:03,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:11:03,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906572468] [2023-11-29 04:11:03,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:03,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:11:03,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:03,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:11:03,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:03,135 INFO L87 Difference]: Start difference. First operand 121410 states and 176224 transitions. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:03,719 INFO L93 Difference]: Finished difference Result 260350 states and 378220 transitions. [2023-11-29 04:11:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2023-11-29 04:11:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:04,116 INFO L225 Difference]: With dead ends: 260350 [2023-11-29 04:11:04,116 INFO L226 Difference]: Without dead ends: 141905 [2023-11-29 04:11:04,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:04,136 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 2093 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:04,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 3278 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:11:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141905 states. [2023-11-29 04:11:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141905 to 120825. [2023-11-29 04:11:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120825 states, 120823 states have (on average 1.4502702300058763) internal successors, (175226), 120824 states have internal predecessors, (175226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120825 states to 120825 states and 175226 transitions. [2023-11-29 04:11:05,448 INFO L78 Accepts]: Start accepts. Automaton has 120825 states and 175226 transitions. Word has length 246 [2023-11-29 04:11:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:05,448 INFO L495 AbstractCegarLoop]: Abstraction has 120825 states and 175226 transitions. [2023-11-29 04:11:05,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 120825 states and 175226 transitions. [2023-11-29 04:11:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-29 04:11:05,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:05,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:05,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:11:05,509 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:05,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1218950972, now seen corresponding path program 1 times [2023-11-29 04:11:05,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031224531] [2023-11-29 04:11:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:05,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:06,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031224531] [2023-11-29 04:11:06,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031224531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:06,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:06,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:11:06,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752371465] [2023-11-29 04:11:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:06,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:11:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:11:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:11:06,246 INFO L87 Difference]: Start difference. First operand 120825 states and 175226 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:06,947 INFO L93 Difference]: Finished difference Result 257473 states and 373124 transitions. [2023-11-29 04:11:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:06,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2023-11-29 04:11:06,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:07,099 INFO L225 Difference]: With dead ends: 257473 [2023-11-29 04:11:07,099 INFO L226 Difference]: Without dead ends: 141641 [2023-11-29 04:11:07,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:07,164 INFO L413 NwaCegarLoop]: 1487 mSDtfsCounter, 1954 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:07,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1954 Valid, 2379 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:11:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141641 states. [2023-11-29 04:11:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141641 to 119865. [2023-11-29 04:11:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119865 states, 119863 states have (on average 1.4452666794590492) internal successors, (173234), 119864 states have internal predecessors, (173234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119865 states to 119865 states and 173234 transitions. [2023-11-29 04:11:08,980 INFO L78 Accepts]: Start accepts. Automaton has 119865 states and 173234 transitions. Word has length 248 [2023-11-29 04:11:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:08,981 INFO L495 AbstractCegarLoop]: Abstraction has 119865 states and 173234 transitions. [2023-11-29 04:11:08,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 119865 states and 173234 transitions. [2023-11-29 04:11:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-11-29 04:11:09,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:09,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:09,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:11:09,048 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:09,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash -699232362, now seen corresponding path program 1 times [2023-11-29 04:11:09,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427326081] [2023-11-29 04:11:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:09,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427326081] [2023-11-29 04:11:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427326081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:09,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:09,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:11:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372217153] [2023-11-29 04:11:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:09,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:11:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:11:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:11:09,162 INFO L87 Difference]: Start difference. First operand 119865 states and 173234 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:10,129 INFO L93 Difference]: Finished difference Result 347881 states and 502734 transitions. [2023-11-29 04:11:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:11:10,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2023-11-29 04:11:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:10,335 INFO L225 Difference]: With dead ends: 347881 [2023-11-29 04:11:10,335 INFO L226 Difference]: Without dead ends: 234161 [2023-11-29 04:11:10,370 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 [2023-11-29 04:11:10,370 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 833 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:10,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2701 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:11:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234161 states. [2023-11-29 04:11:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234161 to 121081. [2023-11-29 04:11:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121081 states, 121079 states have (on average 1.4447592067988668) internal successors, (174930), 121080 states have internal predecessors, (174930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121081 states to 121081 states and 174930 transitions. [2023-11-29 04:11:12,567 INFO L78 Accepts]: Start accepts. Automaton has 121081 states and 174930 transitions. Word has length 250 [2023-11-29 04:11:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:12,567 INFO L495 AbstractCegarLoop]: Abstraction has 121081 states and 174930 transitions. [2023-11-29 04:11:12,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 121081 states and 174930 transitions. [2023-11-29 04:11:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-29 04:11:12,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:12,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:12,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:11:12,623 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:12,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash 775377597, now seen corresponding path program 1 times [2023-11-29 04:11:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:12,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218626550] [2023-11-29 04:11:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:12,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218626550] [2023-11-29 04:11:12,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218626550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:12,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:12,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:11:12,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511606851] [2023-11-29 04:11:12,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:12,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:11:12,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:12,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:11:12,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:11:12,701 INFO L87 Difference]: Start difference. First operand 121081 states and 174930 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:13,687 INFO L93 Difference]: Finished difference Result 349289 states and 504398 transitions. [2023-11-29 04:11:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:11:13,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2023-11-29 04:11:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:13,916 INFO L225 Difference]: With dead ends: 349289 [2023-11-29 04:11:13,916 INFO L226 Difference]: Without dead ends: 235377 [2023-11-29 04:11:13,958 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 [2023-11-29 04:11:13,958 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 828 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:13,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2701 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:11:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235377 states. [2023-11-29 04:11:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235377 to 122553. [2023-11-29 04:11:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122553 states, 122551 states have (on average 1.4415059852632781) internal successors, (176658), 122552 states have internal predecessors, (176658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122553 states to 122553 states and 176658 transitions. [2023-11-29 04:11:16,009 INFO L78 Accepts]: Start accepts. Automaton has 122553 states and 176658 transitions. Word has length 251 [2023-11-29 04:11:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:16,009 INFO L495 AbstractCegarLoop]: Abstraction has 122553 states and 176658 transitions. [2023-11-29 04:11:16,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 122553 states and 176658 transitions. [2023-11-29 04:11:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-29 04:11:16,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:16,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:11:16,102 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:16,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash 910625539, now seen corresponding path program 1 times [2023-11-29 04:11:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:16,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642214301] [2023-11-29 04:11:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642214301] [2023-11-29 04:11:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642214301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:16,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:11:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990772824] [2023-11-29 04:11:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:11:16,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:11:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:16,487 INFO L87 Difference]: Start difference. First operand 122553 states and 176658 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:17,460 INFO L93 Difference]: Finished difference Result 354039 states and 509817 transitions. [2023-11-29 04:11:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:17,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2023-11-29 04:11:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:17,668 INFO L225 Difference]: With dead ends: 354039 [2023-11-29 04:11:17,668 INFO L226 Difference]: Without dead ends: 235807 [2023-11-29 04:11:17,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:17,716 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 2906 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2906 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:17,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2906 Valid, 2397 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:11:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235807 states. [2023-11-29 04:11:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235807 to 235743. [2023-11-29 04:11:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235743 states, 235741 states have (on average 1.427248548194841) internal successors, (336461), 235742 states have internal predecessors, (336461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235743 states to 235743 states and 336461 transitions. [2023-11-29 04:11:20,707 INFO L78 Accepts]: Start accepts. Automaton has 235743 states and 336461 transitions. Word has length 252 [2023-11-29 04:11:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:20,708 INFO L495 AbstractCegarLoop]: Abstraction has 235743 states and 336461 transitions. [2023-11-29 04:11:20,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 235743 states and 336461 transitions. [2023-11-29 04:11:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-29 04:11:20,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:20,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:11:20,880 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:20,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash -254923581, now seen corresponding path program 1 times [2023-11-29 04:11:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:20,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564241443] [2023-11-29 04:11:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:21,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564241443] [2023-11-29 04:11:21,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564241443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:21,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:21,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:11:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339304972] [2023-11-29 04:11:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:21,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:11:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:11:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:21,301 INFO L87 Difference]: Start difference. First operand 235743 states and 336461 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:22,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:22,886 INFO L93 Difference]: Finished difference Result 681781 states and 972779 transitions. [2023-11-29 04:11:22,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:22,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2023-11-29 04:11:22,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:23,337 INFO L225 Difference]: With dead ends: 681781 [2023-11-29 04:11:23,337 INFO L226 Difference]: Without dead ends: 456273 [2023-11-29 04:11:23,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:23,802 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 2066 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:23,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 3279 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:11:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456273 states. [2023-11-29 04:11:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456273 to 456247. [2023-11-29 04:11:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456247 states, 456245 states have (on average 1.4150182467753072) internal successors, (645595), 456246 states have internal predecessors, (645595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456247 states to 456247 states and 645595 transitions. [2023-11-29 04:11:30,013 INFO L78 Accepts]: Start accepts. Automaton has 456247 states and 645595 transitions. Word has length 254 [2023-11-29 04:11:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:30,014 INFO L495 AbstractCegarLoop]: Abstraction has 456247 states and 645595 transitions. [2023-11-29 04:11:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 456247 states and 645595 transitions. [2023-11-29 04:11:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-29 04:11:30,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:30,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:30,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:11:30,294 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:30,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1416349149, now seen corresponding path program 1 times [2023-11-29 04:11:30,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:30,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527960874] [2023-11-29 04:11:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:30,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527960874] [2023-11-29 04:11:30,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527960874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:30,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:30,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:11:30,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216894582] [2023-11-29 04:11:30,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:30,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:11:30,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:30,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:11:30,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:11:30,608 INFO L87 Difference]: Start difference. First operand 456247 states and 645595 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:34,114 INFO L93 Difference]: Finished difference Result 1252091 states and 1770615 transitions. [2023-11-29 04:11:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:34,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2023-11-29 04:11:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:35,009 INFO L225 Difference]: With dead ends: 1252091 [2023-11-29 04:11:35,009 INFO L226 Difference]: Without dead ends: 822471 [2023-11-29 04:11:35,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:11:35,655 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 1813 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:35,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 3317 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:11:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822471 states. [2023-11-29 04:11:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822471 to 477827. [2023-11-29 04:11:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477827 states, 477825 states have (on average 1.412372730602208) internal successors, (674867), 477826 states have internal predecessors, (674867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477827 states to 477827 states and 674867 transitions. [2023-11-29 04:11:43,908 INFO L78 Accepts]: Start accepts. Automaton has 477827 states and 674867 transitions. Word has length 254 [2023-11-29 04:11:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:43,908 INFO L495 AbstractCegarLoop]: Abstraction has 477827 states and 674867 transitions. [2023-11-29 04:11:43,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 477827 states and 674867 transitions. [2023-11-29 04:11:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-29 04:11:44,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:44,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:44,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 04:11:44,182 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:44,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1589008546, now seen corresponding path program 1 times [2023-11-29 04:11:44,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:44,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202961687] [2023-11-29 04:11:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:44,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:44,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202961687] [2023-11-29 04:11:44,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202961687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:44,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:44,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:11:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793755631] [2023-11-29 04:11:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:44,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:11:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:11:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:11:44,261 INFO L87 Difference]: Start difference. First operand 477827 states and 674867 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:47,705 INFO L93 Difference]: Finished difference Result 1333867 states and 1882783 transitions. [2023-11-29 04:11:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:11:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2023-11-29 04:11:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:49,160 INFO L225 Difference]: With dead ends: 1333867 [2023-11-29 04:11:49,160 INFO L226 Difference]: Without dead ends: 908087 [2023-11-29 04:11:49,325 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 [2023-11-29 04:11:49,326 INFO L413 NwaCegarLoop]: 1736 mSDtfsCounter, 800 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:49,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 2667 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:11:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908087 states. [2023-11-29 04:11:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908087 to 490339. [2023-11-29 04:11:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490339 states, 490337 states have (on average 1.410790945818896) internal successors, (691763), 490338 states have internal predecessors, (691763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490339 states to 490339 states and 691763 transitions. [2023-11-29 04:11:56,848 INFO L78 Accepts]: Start accepts. Automaton has 490339 states and 691763 transitions. Word has length 256 [2023-11-29 04:11:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:56,848 INFO L495 AbstractCegarLoop]: Abstraction has 490339 states and 691763 transitions. [2023-11-29 04:11:56,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 490339 states and 691763 transitions. [2023-11-29 04:11:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-29 04:11:57,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:57,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:57,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 04:11:57,692 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:57,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1048468411, now seen corresponding path program 1 times [2023-11-29 04:11:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423778145] [2023-11-29 04:11:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:57,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423778145] [2023-11-29 04:11:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423778145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:57,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:57,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:11:57,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556258300] [2023-11-29 04:11:57,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:57,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:11:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:11:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:11:57,766 INFO L87 Difference]: Start difference. First operand 490339 states and 691763 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:00,825 INFO L93 Difference]: Finished difference Result 1349835 states and 1901503 transitions. [2023-11-29 04:12:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:00,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2023-11-29 04:12:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:01,772 INFO L225 Difference]: With dead ends: 1349835 [2023-11-29 04:12:01,772 INFO L226 Difference]: Without dead ends: 923223 [2023-11-29 04:12:01,936 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 [2023-11-29 04:12:01,936 INFO L413 NwaCegarLoop]: 1736 mSDtfsCounter, 795 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:01,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2667 Invalid, 11 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:12:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923223 states. [2023-11-29 04:12:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923223 to 505891. [2023-11-29 04:12:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505891 states, 505889 states have (on average 1.402400526597732) internal successors, (709459), 505890 states have internal predecessors, (709459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505891 states to 505891 states and 709459 transitions. [2023-11-29 04:12:09,933 INFO L78 Accepts]: Start accepts. Automaton has 505891 states and 709459 transitions. Word has length 257 [2023-11-29 04:12:09,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:09,933 INFO L495 AbstractCegarLoop]: Abstraction has 505891 states and 709459 transitions. [2023-11-29 04:12:09,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 505891 states and 709459 transitions. [2023-11-29 04:12:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-29 04:12:10,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:10,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:10,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 04:12:10,268 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:10,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1921026229, now seen corresponding path program 1 times [2023-11-29 04:12:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:10,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108869406] [2023-11-29 04:12:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:10,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:11,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:11,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108869406] [2023-11-29 04:12:11,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108869406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:11,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:11,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:12:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669088178] [2023-11-29 04:12:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:12:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:11,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:12:11,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:11,211 INFO L87 Difference]: Start difference. First operand 505891 states and 709459 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:14,156 INFO L93 Difference]: Finished difference Result 1319084 states and 1850421 transitions. [2023-11-29 04:12:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:12:14,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2023-11-29 04:12:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:15,619 INFO L225 Difference]: With dead ends: 1319084 [2023-11-29 04:12:15,619 INFO L226 Difference]: Without dead ends: 874824 [2023-11-29 04:12:15,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:12:15,802 INFO L413 NwaCegarLoop]: 1480 mSDtfsCounter, 1788 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:15,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1788 Valid, 3359 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:12:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874824 states. [2023-11-29 04:12:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874824 to 513596. [2023-11-29 04:12:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513596 states, 513594 states have (on average 1.397825909181182) internal successors, (717915), 513595 states have internal predecessors, (717915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513596 states to 513596 states and 717915 transitions. [2023-11-29 04:12:23,170 INFO L78 Accepts]: Start accepts. Automaton has 513596 states and 717915 transitions. Word has length 258 [2023-11-29 04:12:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:23,171 INFO L495 AbstractCegarLoop]: Abstraction has 513596 states and 717915 transitions. [2023-11-29 04:12:23,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 513596 states and 717915 transitions. [2023-11-29 04:12:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 04:12:24,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:24,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:24,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 04:12:24,097 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:24,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:24,097 INFO L85 PathProgramCache]: Analyzing trace with hash 268081533, now seen corresponding path program 1 times [2023-11-29 04:12:24,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:24,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253979163] [2023-11-29 04:12:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:24,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:24,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253979163] [2023-11-29 04:12:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253979163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:24,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:12:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496452012] [2023-11-29 04:12:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:24,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:12:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:12:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:24,438 INFO L87 Difference]: Start difference. First operand 513596 states and 717915 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:27,408 INFO L93 Difference]: Finished difference Result 1288345 states and 1800473 transitions. [2023-11-29 04:12:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:12:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2023-11-29 04:12:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:28,243 INFO L225 Difference]: With dead ends: 1288345 [2023-11-29 04:12:28,243 INFO L226 Difference]: Without dead ends: 877445 [2023-11-29 04:12:28,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:12:28,388 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 1747 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:28,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 3311 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:12:28,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877445 states. [2023-11-29 04:12:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877445 to 584193. [2023-11-29 04:12:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584193 states, 584191 states have (on average 1.3924435672579687) internal successors, (813453), 584192 states have internal predecessors, (813453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584193 states to 584193 states and 813453 transitions. [2023-11-29 04:12:36,518 INFO L78 Accepts]: Start accepts. Automaton has 584193 states and 813453 transitions. Word has length 260 [2023-11-29 04:12:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:36,519 INFO L495 AbstractCegarLoop]: Abstraction has 584193 states and 813453 transitions. [2023-11-29 04:12:36,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 584193 states and 813453 transitions. [2023-11-29 04:12:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-29 04:12:37,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:37,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 04:12:37,494 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:37,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1091934239, now seen corresponding path program 1 times [2023-11-29 04:12:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032841554] [2023-11-29 04:12:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:37,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032841554] [2023-11-29 04:12:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032841554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:37,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673574734] [2023-11-29 04:12:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:37,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:12:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:12:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:37,568 INFO L87 Difference]: Start difference. First operand 584193 states and 813453 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:40,721 INFO L93 Difference]: Finished difference Result 1402137 states and 1956685 transitions. [2023-11-29 04:12:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:40,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2023-11-29 04:12:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:41,699 INFO L225 Difference]: With dead ends: 1402137 [2023-11-29 04:12:41,699 INFO L226 Difference]: Without dead ends: 995221 [2023-11-29 04:12:41,869 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 [2023-11-29 04:12:41,870 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 767 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:41,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 2634 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:12:42,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995221 states. [2023-11-29 04:12:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995221 to 596321. [2023-11-29 04:12:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596321 states, 596319 states have (on average 1.3918741478973502) internal successors, (830001), 596320 states have internal predecessors, (830001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:50,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596321 states to 596321 states and 830001 transitions. [2023-11-29 04:12:50,921 INFO L78 Accepts]: Start accepts. Automaton has 596321 states and 830001 transitions. Word has length 262 [2023-11-29 04:12:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:50,921 INFO L495 AbstractCegarLoop]: Abstraction has 596321 states and 830001 transitions. [2023-11-29 04:12:50,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 596321 states and 830001 transitions. [2023-11-29 04:12:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-29 04:12:51,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:51,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:51,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 04:12:51,334 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:51,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash -32853346, now seen corresponding path program 1 times [2023-11-29 04:12:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:51,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889966949] [2023-11-29 04:12:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:51,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889966949] [2023-11-29 04:12:51,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889966949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:51,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:51,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210297998] [2023-11-29 04:12:51,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:12:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:51,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:12:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:51,423 INFO L87 Difference]: Start difference. First operand 596321 states and 830001 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:55,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:55,329 INFO L93 Difference]: Finished difference Result 1417353 states and 1974197 transitions. [2023-11-29 04:12:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:55,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2023-11-29 04:12:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:56,449 INFO L225 Difference]: With dead ends: 1417353 [2023-11-29 04:12:56,449 INFO L226 Difference]: Without dead ends: 1009717 [2023-11-29 04:12:56,681 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 [2023-11-29 04:12:56,681 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 762 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:56,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2634 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:12:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009717 states. [2023-11-29 04:13:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009717 to 610817. [2023-11-29 04:13:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610817 states, 610815 states have (on average 1.3857305403436393) internal successors, (846425), 610816 states have internal predecessors, (846425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610817 states to 610817 states and 846425 transitions. [2023-11-29 04:13:05,939 INFO L78 Accepts]: Start accepts. Automaton has 610817 states and 846425 transitions. Word has length 263 [2023-11-29 04:13:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:13:05,940 INFO L495 AbstractCegarLoop]: Abstraction has 610817 states and 846425 transitions. [2023-11-29 04:13:05,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 610817 states and 846425 transitions. [2023-11-29 04:13:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-29 04:13:06,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:13:06,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:06,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 04:13:06,343 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:13:06,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash -784629362, now seen corresponding path program 1 times [2023-11-29 04:13:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280459393] [2023-11-29 04:13:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:06,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:06,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280459393] [2023-11-29 04:13:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280459393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:06,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:06,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:13:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375759452] [2023-11-29 04:13:06,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:06,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:13:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:13:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:13:06,587 INFO L87 Difference]: Start difference. First operand 610817 states and 846425 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:10,775 INFO L93 Difference]: Finished difference Result 1662217 states and 2304427 transitions. [2023-11-29 04:13:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:13:10,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2023-11-29 04:13:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:13:12,009 INFO L225 Difference]: With dead ends: 1662217 [2023-11-29 04:13:12,010 INFO L226 Difference]: Without dead ends: 1237298 [2023-11-29 04:13:12,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:13:12,233 INFO L413 NwaCegarLoop]: 1909 mSDtfsCounter, 2096 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 4537 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:13:12,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 4537 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:13:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237298 states. [2023-11-29 04:13:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237298 to 638768. [2023-11-29 04:13:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638768 states, 638766 states have (on average 1.3813352620521442) internal successors, (882350), 638767 states have internal predecessors, (882350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638768 states to 638768 states and 882350 transitions. [2023-11-29 04:13:23,381 INFO L78 Accepts]: Start accepts. Automaton has 638768 states and 882350 transitions. Word has length 264 [2023-11-29 04:13:23,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:13:23,382 INFO L495 AbstractCegarLoop]: Abstraction has 638768 states and 882350 transitions. [2023-11-29 04:13:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:23,382 INFO L276 IsEmpty]: Start isEmpty. Operand 638768 states and 882350 transitions. [2023-11-29 04:13:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 04:13:23,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:13:23,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:23,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 04:13:23,829 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:13:23,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 604709628, now seen corresponding path program 1 times [2023-11-29 04:13:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084066868] [2023-11-29 04:13:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:24,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:24,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084066868] [2023-11-29 04:13:24,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084066868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:24,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:13:24,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649692216] [2023-11-29 04:13:24,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:24,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:13:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:13:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:13:24,608 INFO L87 Difference]: Start difference. First operand 638768 states and 882350 transitions. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:28,000 INFO L93 Difference]: Finished difference Result 1547590 states and 2142398 transitions. [2023-11-29 04:13:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:13:28,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2023-11-29 04:13:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:13:29,129 INFO L225 Difference]: With dead ends: 1547590 [2023-11-29 04:13:29,129 INFO L226 Difference]: Without dead ends: 1126862 [2023-11-29 04:13:29,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:13:29,331 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1709 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:13:29,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 3400 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:13:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126862 states. [2023-11-29 04:13:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126862 to 754970. [2023-11-29 04:13:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754970 states, 754968 states have (on average 1.3762517086816926) internal successors, (1039026), 754969 states have internal predecessors, (1039026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754970 states to 754970 states and 1039026 transitions. [2023-11-29 04:13:39,647 INFO L78 Accepts]: Start accepts. Automaton has 754970 states and 1039026 transitions. Word has length 266 [2023-11-29 04:13:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:13:39,647 INFO L495 AbstractCegarLoop]: Abstraction has 754970 states and 1039026 transitions. [2023-11-29 04:13:39,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand 754970 states and 1039026 transitions. [2023-11-29 04:13:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 04:13:40,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:13:40,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:40,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 04:13:40,721 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:13:40,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1379846382, now seen corresponding path program 1 times [2023-11-29 04:13:40,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:40,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60474143] [2023-11-29 04:13:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:40,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:40,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:40,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60474143] [2023-11-29 04:13:40,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60474143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:40,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:40,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:13:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004681530] [2023-11-29 04:13:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:40,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:13:40,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:13:40,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:13:40,967 INFO L87 Difference]: Start difference. First operand 754970 states and 1039026 transitions. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:45,048 INFO L93 Difference]: Finished difference Result 1667477 states and 2300288 transitions. [2023-11-29 04:13:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:13:45,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2023-11-29 04:13:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:13:46,707 INFO L225 Difference]: With dead ends: 1667477 [2023-11-29 04:13:46,707 INFO L226 Difference]: Without dead ends: 1274809 [2023-11-29 04:13:47,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:13:47,049 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 1681 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:13:47,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 3606 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:13:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274809 states. [2023-11-29 04:13:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274809 to 960069. [2023-11-29 04:13:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960069 states, 960067 states have (on average 1.3738416173037924) internal successors, (1318980), 960068 states have internal predecessors, (1318980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:14:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960069 states to 960069 states and 1318980 transitions. [2023-11-29 04:14:00,460 INFO L78 Accepts]: Start accepts. Automaton has 960069 states and 1318980 transitions. Word has length 266 [2023-11-29 04:14:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:00,460 INFO L495 AbstractCegarLoop]: Abstraction has 960069 states and 1318980 transitions. [2023-11-29 04:14:00,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:14:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 960069 states and 1318980 transitions. [2023-11-29 04:14:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-29 04:14:01,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:01,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:01,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 04:14:01,292 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:01,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash -255980343, now seen corresponding path program 1 times [2023-11-29 04:14:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:01,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597975353] [2023-11-29 04:14:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597975353] [2023-11-29 04:14:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597975353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:01,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:14:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607279394] [2023-11-29 04:14:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:14:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:14:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:14:01,382 INFO L87 Difference]: Start difference. First operand 960069 states and 1318980 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:14:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:06,831 INFO L93 Difference]: Finished difference Result 2075226 states and 2858337 transitions. [2023-11-29 04:14:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:14:06,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2023-11-29 04:14:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:08,586 INFO L225 Difference]: With dead ends: 2075226 [2023-11-29 04:14:08,586 INFO L226 Difference]: Without dead ends: 1620602 [2023-11-29 04:14:08,793 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 [2023-11-29 04:14:08,793 INFO L413 NwaCegarLoop]: 1777 mSDtfsCounter, 764 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:08,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 2675 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:14:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620602 states.