./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.2.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB --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 64bit --witnessprinter.graph.data.programhash cf781dc2288a00f369934df75df908cdb6dbb08527402be5afe46a5cc4e19cf1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:40:46,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:40:46,717 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:40:46,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:40:46,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:40:46,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:40:46,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:40:46,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:40:46,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:40:46,765 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:40:46,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:40:46,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:40:46,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:40:46,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:40:46,767 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:40:46,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:40:46,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:40:46,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:40:46,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:40:46,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:40:46,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:40:46,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:40:46,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:40:46,769 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:40:46,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:40:46,770 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:40:46,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:46,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:46,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:46,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:46,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:40:46,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:46,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:46,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:46,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:40:46,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:40:46,773 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf781dc2288a00f369934df75df908cdb6dbb08527402be5afe46a5cc4e19cf1 [2024-11-28 02:40:47,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:40:47,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:40:47,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:40:47,137 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:40:47,137 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:40:47,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.2.prop1-back-serstep.c [2024-11-28 02:40:50,240 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/data/de32456a1/ce33f004eaf14b42ac0ccc12f9edd4da/FLAG76dfc2822 [2024-11-28 02:40:50,563 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:40:50,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.2.prop1-back-serstep.c [2024-11-28 02:40:50,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/data/de32456a1/ce33f004eaf14b42ac0ccc12f9edd4da/FLAG76dfc2822 [2024-11-28 02:40:50,591 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/data/de32456a1/ce33f004eaf14b42ac0ccc12f9edd4da [2024-11-28 02:40:50,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:40:50,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:40:50,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:50,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:40:50,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:40:50,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:50" (1/1) ... [2024-11-28 02:40:50,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fef4a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:50, skipping insertion in model container [2024-11-28 02:40:50,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:50" (1/1) ... [2024-11-28 02:40:50,649 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:50,818 WARN L250 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_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.2.prop1-back-serstep.c[1174,1187] [2024-11-28 02:40:51,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:51,100 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:40:51,114 WARN L250 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_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.2.prop1-back-serstep.c[1174,1187] [2024-11-28 02:40:51,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:51,338 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:40:51,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51 WrapperNode [2024-11-28 02:40:51,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:51,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:51,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:40:51,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:40:51,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:51,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:51,714 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1948 [2024-11-28 02:40:51,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:51,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:40:51,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:40:51,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:40:51,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:51,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:51,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:51,926 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]. [2024-11-28 02:40:51,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:51,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:52,019 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:52,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:52,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:52,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:52,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:52,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:40:52,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:40:52,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:40:52,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:40:52,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (1/1) ... [2024-11-28 02:40:52,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:52,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:52,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:40:52,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:40:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:40:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:40:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:40:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:40:52,523 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:40:52,525 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:40:55,913 INFO L? ?]: Removed 993 outVars from TransFormulas that were not future-live. [2024-11-28 02:40:55,914 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:40:55,952 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:40:55,953 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:40:55,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:55 BoogieIcfgContainer [2024-11-28 02:40:55,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:40:55,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:40:55,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:40:55,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:40:55,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:40:50" (1/3) ... [2024-11-28 02:40:55,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182948df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:55, skipping insertion in model container [2024-11-28 02:40:55,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:51" (2/3) ... [2024-11-28 02:40:55,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182948df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:55, skipping insertion in model container [2024-11-28 02:40:55,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:55" (3/3) ... [2024-11-28 02:40:55,962 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.adding.2.prop1-back-serstep.c [2024-11-28 02:40:55,978 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:40:55,979 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.adding.2.prop1-back-serstep.c that has 1 procedures, 686 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:40:56,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:40:56,063 INFO L333 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, 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;@1b042295, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:40:56,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:40:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 684 states have (on average 1.5014619883040936) internal successors, (1027), 685 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 02:40:56,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:56,079 INFO L218 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] [2024-11-28 02:40:56,079 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:56,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1356627832, now seen corresponding path program 1 times [2024-11-28 02:40:56,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:56,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828211662] [2024-11-28 02:40:56,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:56,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:57,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:57,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828211662] [2024-11-28 02:40:57,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828211662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:57,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:57,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982195107] [2024-11-28 02:40:57,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:57,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:57,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:57,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:57,283 INFO L87 Difference]: Start difference. First operand has 686 states, 684 states have (on average 1.5014619883040936) internal successors, (1027), 685 states have internal predecessors, (1027), 0 states have call successors, (0), 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 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:57,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:57,475 INFO L93 Difference]: Finished difference Result 1325 states and 1987 transitions. [2024-11-28 02:40:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:57,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-11-28 02:40:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:57,492 INFO L225 Difference]: With dead ends: 1325 [2024-11-28 02:40:57,493 INFO L226 Difference]: Without dead ends: 685 [2024-11-28 02:40:57,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:57,500 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:57,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3057 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-28 02:40:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2024-11-28 02:40:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 1.4985380116959064) internal successors, (1025), 684 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1025 transitions. [2024-11-28 02:40:57,578 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1025 transitions. Word has length 85 [2024-11-28 02:40:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:57,582 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1025 transitions. [2024-11-28 02:40:57,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1025 transitions. [2024-11-28 02:40:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:40:57,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:57,587 INFO L218 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] [2024-11-28 02:40:57,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:40:57,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:57,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 895905841, now seen corresponding path program 1 times [2024-11-28 02:40:57,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:57,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223405209] [2024-11-28 02:40:57,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:57,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:57,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:57,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223405209] [2024-11-28 02:40:57,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223405209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:57,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:57,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:57,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220544584] [2024-11-28 02:40:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:57,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:57,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:57,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:57,997 INFO L87 Difference]: Start difference. First operand 685 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:58,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:58,086 INFO L93 Difference]: Finished difference Result 1326 states and 1985 transitions. [2024-11-28 02:40:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-11-28 02:40:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:58,092 INFO L225 Difference]: With dead ends: 1326 [2024-11-28 02:40:58,092 INFO L226 Difference]: Without dead ends: 687 [2024-11-28 02:40:58,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:58,094 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:58,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3053 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-28 02:40:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2024-11-28 02:40:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.4970845481049562) internal successors, (1027), 686 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1027 transitions. [2024-11-28 02:40:58,125 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1027 transitions. Word has length 86 [2024-11-28 02:40:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:58,125 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1027 transitions. [2024-11-28 02:40:58,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1027 transitions. [2024-11-28 02:40:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 02:40:58,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:58,129 INFO L218 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] [2024-11-28 02:40:58,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:40:58,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:58,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash 905311873, now seen corresponding path program 1 times [2024-11-28 02:40:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:58,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968887384] [2024-11-28 02:40:58,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:58,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:58,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:58,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968887384] [2024-11-28 02:40:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968887384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:58,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:58,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899623902] [2024-11-28 02:40:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:58,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:58,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:58,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:58,659 INFO L87 Difference]: Start difference. First operand 687 states and 1027 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:58,786 INFO L93 Difference]: Finished difference Result 1955 states and 2926 transitions. [2024-11-28 02:40:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:58,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-11-28 02:40:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:58,796 INFO L225 Difference]: With dead ends: 1955 [2024-11-28 02:40:58,796 INFO L226 Difference]: Without dead ends: 1314 [2024-11-28 02:40:58,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:58,802 INFO L435 NwaCegarLoop]: 1019 mSDtfsCounter, 928 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:58,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 4003 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2024-11-28 02:40:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 797. [2024-11-28 02:40:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.4962311557788945) internal successors, (1191), 796 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1191 transitions. [2024-11-28 02:40:58,869 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1191 transitions. Word has length 87 [2024-11-28 02:40:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:58,870 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1191 transitions. [2024-11-28 02:40:58,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1191 transitions. [2024-11-28 02:40:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-28 02:40:58,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:58,894 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:58,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:40:58,894 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:58,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash 196228026, now seen corresponding path program 1 times [2024-11-28 02:40:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:58,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765301767] [2024-11-28 02:40:58,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:41:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765301767] [2024-11-28 02:41:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765301767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:00,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:00,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:41:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996701780] [2024-11-28 02:41:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:00,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:41:00,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:00,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:41:00,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:00,562 INFO L87 Difference]: Start difference. First operand 797 states and 1191 transitions. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:00,618 INFO L93 Difference]: Finished difference Result 1442 states and 2155 transitions. [2024-11-28 02:41:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:00,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 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 392 [2024-11-28 02:41:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:00,627 INFO L225 Difference]: With dead ends: 1442 [2024-11-28 02:41:00,627 INFO L226 Difference]: Without dead ends: 801 [2024-11-28 02:41:00,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:00,632 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:00,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3053 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-28 02:41:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 797. [2024-11-28 02:41:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.4962311557788945) internal successors, (1191), 796 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1191 transitions. [2024-11-28 02:41:00,665 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1191 transitions. Word has length 392 [2024-11-28 02:41:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:00,666 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1191 transitions. [2024-11-28 02:41:00,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1191 transitions. [2024-11-28 02:41:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-11-28 02:41:00,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:00,676 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:00,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:41:00,676 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:00,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1597978465, now seen corresponding path program 1 times [2024-11-28 02:41:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:00,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320932302] [2024-11-28 02:41:00,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320932302] [2024-11-28 02:41:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320932302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:02,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:02,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:02,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606365187] [2024-11-28 02:41:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:02,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:02,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:02,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:02,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:02,771 INFO L87 Difference]: Start difference. First operand 797 states and 1191 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:03,460 INFO L93 Difference]: Finished difference Result 1997 states and 2986 transitions. [2024-11-28 02:41:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:41:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 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 393 [2024-11-28 02:41:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:03,465 INFO L225 Difference]: With dead ends: 1997 [2024-11-28 02:41:03,465 INFO L226 Difference]: Without dead ends: 797 [2024-11-28 02:41:03,467 INFO L434 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 [2024-11-28 02:41:03,467 INFO L435 NwaCegarLoop]: 1136 mSDtfsCounter, 502 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:03,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 3039 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:41:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2024-11-28 02:41:03,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2024-11-28 02:41:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.4949748743718594) internal successors, (1190), 796 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1190 transitions. [2024-11-28 02:41:03,495 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1190 transitions. Word has length 393 [2024-11-28 02:41:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:03,497 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1190 transitions. [2024-11-28 02:41:03,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:03,498 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1190 transitions. [2024-11-28 02:41:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-28 02:41:03,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:03,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:03,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:41:03,508 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:03,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash 24846299, now seen corresponding path program 1 times [2024-11-28 02:41:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:03,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343317804] [2024-11-28 02:41:03,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 02:41:04,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:04,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343317804] [2024-11-28 02:41:04,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343317804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:04,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:04,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:04,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131257584] [2024-11-28 02:41:04,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:04,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:04,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:04,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:04,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:04,828 INFO L87 Difference]: Start difference. First operand 797 states and 1190 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:04,879 INFO L93 Difference]: Finished difference Result 1446 states and 2159 transitions. [2024-11-28 02:41:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 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 394 [2024-11-28 02:41:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:04,885 INFO L225 Difference]: With dead ends: 1446 [2024-11-28 02:41:04,885 INFO L226 Difference]: Without dead ends: 801 [2024-11-28 02:41:04,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:04,887 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:04,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-28 02:41:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2024-11-28 02:41:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 1.493734335839599) internal successors, (1192), 798 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1192 transitions. [2024-11-28 02:41:04,909 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1192 transitions. Word has length 394 [2024-11-28 02:41:04,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:04,910 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1192 transitions. [2024-11-28 02:41:04,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1192 transitions. [2024-11-28 02:41:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-28 02:41:04,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:04,917 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:04,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:41:04,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:04,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1884428983, now seen corresponding path program 1 times [2024-11-28 02:41:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:04,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126738871] [2024-11-28 02:41:04,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 02:41:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126738871] [2024-11-28 02:41:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126738871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:06,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:41:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636066303] [2024-11-28 02:41:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:06,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:41:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:06,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:41:06,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:06,469 INFO L87 Difference]: Start difference. First operand 799 states and 1192 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:06,532 INFO L93 Difference]: Finished difference Result 1454 states and 2169 transitions. [2024-11-28 02:41:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:06,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 395 [2024-11-28 02:41:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:06,536 INFO L225 Difference]: With dead ends: 1454 [2024-11-28 02:41:06,537 INFO L226 Difference]: Without dead ends: 803 [2024-11-28 02:41:06,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:06,538 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:06,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4064 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:06,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-28 02:41:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 801. [2024-11-28 02:41:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 1.4925) internal successors, (1194), 800 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1194 transitions. [2024-11-28 02:41:06,561 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1194 transitions. Word has length 395 [2024-11-28 02:41:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:06,562 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1194 transitions. [2024-11-28 02:41:06,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1194 transitions. [2024-11-28 02:41:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-11-28 02:41:06,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:06,592 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:06,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:41:06,592 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:06,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:06,593 INFO L85 PathProgramCache]: Analyzing trace with hash -348725598, now seen corresponding path program 1 times [2024-11-28 02:41:06,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202678319] [2024-11-28 02:41:06,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:06,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 02:41:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202678319] [2024-11-28 02:41:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202678319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:07,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:07,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:41:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570468982] [2024-11-28 02:41:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:07,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:41:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:07,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:41:07,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:07,670 INFO L87 Difference]: Start difference. First operand 801 states and 1194 transitions. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:07,738 INFO L93 Difference]: Finished difference Result 1462 states and 2179 transitions. [2024-11-28 02:41:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:07,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 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 396 [2024-11-28 02:41:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:07,743 INFO L225 Difference]: With dead ends: 1462 [2024-11-28 02:41:07,745 INFO L226 Difference]: Without dead ends: 805 [2024-11-28 02:41:07,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:07,747 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:07,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4064 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-28 02:41:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 803. [2024-11-28 02:41:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.4912718204488777) internal successors, (1196), 802 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1196 transitions. [2024-11-28 02:41:07,770 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1196 transitions. Word has length 396 [2024-11-28 02:41:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:07,770 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1196 transitions. [2024-11-28 02:41:07,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1196 transitions. [2024-11-28 02:41:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-28 02:41:07,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:07,778 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:07,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:41:07,779 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:07,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash 766483312, now seen corresponding path program 1 times [2024-11-28 02:41:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:07,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022432017] [2024-11-28 02:41:07,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:41:08,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:08,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022432017] [2024-11-28 02:41:08,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022432017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:08,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704933529] [2024-11-28 02:41:08,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:08,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:08,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:08,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:08,720 INFO L87 Difference]: Start difference. First operand 803 states and 1196 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:08,774 INFO L93 Difference]: Finished difference Result 1478 states and 2201 transitions. [2024-11-28 02:41:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:08,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 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 397 [2024-11-28 02:41:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:08,780 INFO L225 Difference]: With dead ends: 1478 [2024-11-28 02:41:08,780 INFO L226 Difference]: Without dead ends: 815 [2024-11-28 02:41:08,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:08,782 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 4 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:08,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-28 02:41:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 809. [2024-11-28 02:41:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.49009900990099) internal successors, (1204), 808 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1204 transitions. [2024-11-28 02:41:08,805 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1204 transitions. Word has length 397 [2024-11-28 02:41:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:08,807 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1204 transitions. [2024-11-28 02:41:08,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1204 transitions. [2024-11-28 02:41:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-28 02:41:08,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:08,814 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:08,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:41:08,815 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:08,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1907570352, now seen corresponding path program 1 times [2024-11-28 02:41:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:08,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691530373] [2024-11-28 02:41:08,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:41:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691530373] [2024-11-28 02:41:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691530373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:09,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:09,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625651095] [2024-11-28 02:41:09,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:09,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:09,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:09,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:09,862 INFO L87 Difference]: Start difference. First operand 809 states and 1204 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:09,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:09,921 INFO L93 Difference]: Finished difference Result 1498 states and 2229 transitions. [2024-11-28 02:41:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:09,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 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 398 [2024-11-28 02:41:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:09,926 INFO L225 Difference]: With dead ends: 1498 [2024-11-28 02:41:09,927 INFO L226 Difference]: Without dead ends: 821 [2024-11-28 02:41:09,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:09,929 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 4 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:09,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-28 02:41:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 815. [2024-11-28 02:41:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 814 states have (on average 1.488943488943489) internal successors, (1212), 814 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1212 transitions. [2024-11-28 02:41:09,954 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1212 transitions. Word has length 398 [2024-11-28 02:41:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:09,955 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1212 transitions. [2024-11-28 02:41:09,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1212 transitions. [2024-11-28 02:41:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-28 02:41:09,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:09,964 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:09,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:41:09,965 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:09,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash 857671138, now seen corresponding path program 1 times [2024-11-28 02:41:09,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:09,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161443409] [2024-11-28 02:41:09,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:41:10,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161443409] [2024-11-28 02:41:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161443409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:10,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:10,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:10,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81588682] [2024-11-28 02:41:10,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:10,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:10,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:10,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:10,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:10,919 INFO L87 Difference]: Start difference. First operand 815 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:10,977 INFO L93 Difference]: Finished difference Result 1510 states and 2245 transitions. [2024-11-28 02:41:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:10,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 399 [2024-11-28 02:41:10,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:10,983 INFO L225 Difference]: With dead ends: 1510 [2024-11-28 02:41:10,983 INFO L226 Difference]: Without dead ends: 819 [2024-11-28 02:41:10,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:10,985 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:10,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:10,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-28 02:41:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2024-11-28 02:41:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.4877450980392157) internal successors, (1214), 816 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1214 transitions. [2024-11-28 02:41:11,010 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1214 transitions. Word has length 399 [2024-11-28 02:41:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:11,011 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1214 transitions. [2024-11-28 02:41:11,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1214 transitions. [2024-11-28 02:41:11,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-28 02:41:11,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:11,021 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:11,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:41:11,021 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:11,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:11,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2046815689, now seen corresponding path program 1 times [2024-11-28 02:41:11,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:11,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030821680] [2024-11-28 02:41:11,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:11,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:41:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030821680] [2024-11-28 02:41:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030821680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:11,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:11,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:11,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290777551] [2024-11-28 02:41:11,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:11,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:11,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:11,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:11,820 INFO L87 Difference]: Start difference. First operand 817 states and 1214 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:11,874 INFO L93 Difference]: Finished difference Result 1518 states and 2255 transitions. [2024-11-28 02:41:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 400 [2024-11-28 02:41:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:11,878 INFO L225 Difference]: With dead ends: 1518 [2024-11-28 02:41:11,879 INFO L226 Difference]: Without dead ends: 821 [2024-11-28 02:41:11,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:11,881 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:11,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3044 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-28 02:41:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 819. [2024-11-28 02:41:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 1.4865525672371638) internal successors, (1216), 818 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1216 transitions. [2024-11-28 02:41:11,902 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1216 transitions. Word has length 400 [2024-11-28 02:41:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:11,903 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1216 transitions. [2024-11-28 02:41:11,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1216 transitions. [2024-11-28 02:41:11,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-28 02:41:11,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:11,910 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:11,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:41:11,911 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:11,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash -827473445, now seen corresponding path program 1 times [2024-11-28 02:41:11,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:11,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729983353] [2024-11-28 02:41:11,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:11,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 02:41:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729983353] [2024-11-28 02:41:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729983353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:12,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:12,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425395366] [2024-11-28 02:41:12,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:12,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:12,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:12,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:12,704 INFO L87 Difference]: Start difference. First operand 819 states and 1216 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:12,756 INFO L93 Difference]: Finished difference Result 1532 states and 2273 transitions. [2024-11-28 02:41:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:12,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 401 [2024-11-28 02:41:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:12,760 INFO L225 Difference]: With dead ends: 1532 [2024-11-28 02:41:12,760 INFO L226 Difference]: Without dead ends: 833 [2024-11-28 02:41:12,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:12,764 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 3 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:12,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-11-28 02:41:12,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 823. [2024-11-28 02:41:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 1.4866180048661801) internal successors, (1222), 822 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1222 transitions. [2024-11-28 02:41:12,786 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1222 transitions. Word has length 401 [2024-11-28 02:41:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:12,787 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1222 transitions. [2024-11-28 02:41:12,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1222 transitions. [2024-11-28 02:41:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-28 02:41:12,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:12,794 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:12,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:41:12,795 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:12,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1617450306, now seen corresponding path program 1 times [2024-11-28 02:41:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:12,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807197037] [2024-11-28 02:41:12,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 02:41:13,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807197037] [2024-11-28 02:41:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807197037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:13,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:41:13,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301470462] [2024-11-28 02:41:13,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:13,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:13,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:13,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:13,774 INFO L87 Difference]: Start difference. First operand 823 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:13,857 INFO L93 Difference]: Finished difference Result 1538 states and 2283 transitions. [2024-11-28 02:41:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:13,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 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 402 [2024-11-28 02:41:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:13,862 INFO L225 Difference]: With dead ends: 1538 [2024-11-28 02:41:13,862 INFO L226 Difference]: Without dead ends: 827 [2024-11-28 02:41:13,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:13,864 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:13,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3044 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:41:13,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-28 02:41:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 825. [2024-11-28 02:41:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.4854368932038835) internal successors, (1224), 824 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1224 transitions. [2024-11-28 02:41:13,890 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1224 transitions. Word has length 402 [2024-11-28 02:41:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:13,891 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1224 transitions. [2024-11-28 02:41:13,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1224 transitions. [2024-11-28 02:41:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-28 02:41:13,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:13,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:13,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:41:13,900 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:13,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1694897964, now seen corresponding path program 1 times [2024-11-28 02:41:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:13,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675476280] [2024-11-28 02:41:13,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:14,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:14,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675476280] [2024-11-28 02:41:14,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675476280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:14,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767910397] [2024-11-28 02:41:14,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:14,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:14,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:14,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:14,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:41:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:15,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:41:15,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:16,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:16,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767910397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:16,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:16,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:16,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553115292] [2024-11-28 02:41:16,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:16,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:16,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:16,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:16,138 INFO L87 Difference]: Start difference. First operand 825 states and 1224 transitions. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:16,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:16,726 INFO L93 Difference]: Finished difference Result 2086 states and 3082 transitions. [2024-11-28 02:41:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:41:16,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 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 403 [2024-11-28 02:41:16,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:16,732 INFO L225 Difference]: With dead ends: 2086 [2024-11-28 02:41:16,732 INFO L226 Difference]: Without dead ends: 1350 [2024-11-28 02:41:16,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:41:16,735 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 1044 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:16,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 4747 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:41:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2024-11-28 02:41:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 825. [2024-11-28 02:41:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.4842233009708738) internal successors, (1223), 824 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1223 transitions. [2024-11-28 02:41:16,763 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1223 transitions. Word has length 403 [2024-11-28 02:41:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:16,763 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1223 transitions. [2024-11-28 02:41:16,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1223 transitions. [2024-11-28 02:41:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-28 02:41:16,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:16,768 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:16,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:41:16,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:41:16,969 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:16,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1935075672, now seen corresponding path program 1 times [2024-11-28 02:41:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275458584] [2024-11-28 02:41:16,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 34 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:17,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:17,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275458584] [2024-11-28 02:41:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275458584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:17,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212195343] [2024-11-28 02:41:17,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:17,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:17,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:17,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:41:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:18,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:41:18,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:41:19,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:19,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212195343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:19,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220166515] [2024-11-28 02:41:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:19,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:19,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:19,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:19,020 INFO L87 Difference]: Start difference. First operand 825 states and 1223 transitions. Second operand has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:20,081 INFO L93 Difference]: Finished difference Result 2049 states and 3036 transitions. [2024-11-28 02:41:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:41:20,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 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 404 [2024-11-28 02:41:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:20,087 INFO L225 Difference]: With dead ends: 2049 [2024-11-28 02:41:20,087 INFO L226 Difference]: Without dead ends: 1378 [2024-11-28 02:41:20,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:20,089 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 933 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:20,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 4219 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:41:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-28 02:41:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 827. [2024-11-28 02:41:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 826 states have (on average 1.4818401937046004) internal successors, (1224), 826 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1224 transitions. [2024-11-28 02:41:20,114 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1224 transitions. Word has length 404 [2024-11-28 02:41:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:20,114 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1224 transitions. [2024-11-28 02:41:20,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1224 transitions. [2024-11-28 02:41:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-28 02:41:20,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:20,118 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:20,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:41:20,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:20,323 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:20,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1482703366, now seen corresponding path program 1 times [2024-11-28 02:41:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:20,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974161441] [2024-11-28 02:41:20,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:20,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:21,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974161441] [2024-11-28 02:41:21,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974161441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661777904] [2024-11-28 02:41:21,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:21,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:21,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:21,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:41:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:22,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:41:22,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:41:22,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:22,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661777904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:22,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:22,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:22,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093541764] [2024-11-28 02:41:22,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:22,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:22,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:22,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:22,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:22,333 INFO L87 Difference]: Start difference. First operand 827 states and 1224 transitions. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:23,129 INFO L93 Difference]: Finished difference Result 2077 states and 3076 transitions. [2024-11-28 02:41:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:41:23,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 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 405 [2024-11-28 02:41:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:23,135 INFO L225 Difference]: With dead ends: 2077 [2024-11-28 02:41:23,135 INFO L226 Difference]: Without dead ends: 1390 [2024-11-28 02:41:23,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:23,137 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 1809 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:23,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 3479 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:41:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-28 02:41:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 841. [2024-11-28 02:41:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.4761904761904763) internal successors, (1240), 840 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1240 transitions. [2024-11-28 02:41:23,164 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1240 transitions. Word has length 405 [2024-11-28 02:41:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:23,164 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 1240 transitions. [2024-11-28 02:41:23,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1240 transitions. [2024-11-28 02:41:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-28 02:41:23,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:23,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:23,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:23,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:41:23,369 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:23,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1994407883, now seen corresponding path program 1 times [2024-11-28 02:41:23,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:23,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909012815] [2024-11-28 02:41:23,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:24,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:24,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909012815] [2024-11-28 02:41:24,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909012815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:24,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350702890] [2024-11-28 02:41:24,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:24,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:24,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:24,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:24,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:41:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:25,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:41:25,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:25,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350702890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:25,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868775614] [2024-11-28 02:41:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:25,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:25,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:25,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:25,657 INFO L87 Difference]: Start difference. First operand 841 states and 1240 transitions. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:26,317 INFO L93 Difference]: Finished difference Result 2077 states and 3048 transitions. [2024-11-28 02:41:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:41:26,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 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 406 [2024-11-28 02:41:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:26,324 INFO L225 Difference]: With dead ends: 2077 [2024-11-28 02:41:26,324 INFO L226 Difference]: Without dead ends: 1406 [2024-11-28 02:41:26,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:26,326 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 1059 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:26,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 3733 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:41:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2024-11-28 02:41:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1086. [2024-11-28 02:41:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.4626728110599079) internal successors, (1587), 1085 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1587 transitions. [2024-11-28 02:41:26,364 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1587 transitions. Word has length 406 [2024-11-28 02:41:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:26,365 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1587 transitions. [2024-11-28 02:41:26,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1587 transitions. [2024-11-28 02:41:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-28 02:41:26,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:26,371 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:26,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:41:26,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:41:26,572 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:26,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:26,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1663279086, now seen corresponding path program 1 times [2024-11-28 02:41:26,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:26,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967343130] [2024-11-28 02:41:26,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:26,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:27,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:27,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967343130] [2024-11-28 02:41:27,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967343130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359909826] [2024-11-28 02:41:27,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:27,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:27,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:27,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:41:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:28,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:41:28,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:29,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359909826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:29,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:29,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:29,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128927244] [2024-11-28 02:41:29,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:29,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:29,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:29,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:29,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:29,176 INFO L87 Difference]: Start difference. First operand 1086 states and 1587 transitions. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:30,067 INFO L93 Difference]: Finished difference Result 2160 states and 3174 transitions. [2024-11-28 02:41:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:41:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 407 [2024-11-28 02:41:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:30,072 INFO L225 Difference]: With dead ends: 2160 [2024-11-28 02:41:30,072 INFO L226 Difference]: Without dead ends: 1324 [2024-11-28 02:41:30,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:30,074 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 1454 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:30,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3071 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:41:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2024-11-28 02:41:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1322. [2024-11-28 02:41:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 1.469341408024224) internal successors, (1941), 1321 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:30,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1941 transitions. [2024-11-28 02:41:30,103 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1941 transitions. Word has length 407 [2024-11-28 02:41:30,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:30,103 INFO L471 AbstractCegarLoop]: Abstraction has 1322 states and 1941 transitions. [2024-11-28 02:41:30,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1941 transitions. [2024-11-28 02:41:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-28 02:41:30,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:30,108 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:30,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:41:30,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:30,312 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:30,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash -19151698, now seen corresponding path program 1 times [2024-11-28 02:41:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:30,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792901164] [2024-11-28 02:41:30,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792901164] [2024-11-28 02:41:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792901164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053548486] [2024-11-28 02:41:31,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:31,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:31,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:41:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:31,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:41:31,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:41:32,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:32,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053548486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:32,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:32,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502563468] [2024-11-28 02:41:32,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:32,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:32,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:32,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:32,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:32,217 INFO L87 Difference]: Start difference. First operand 1322 states and 1941 transitions. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:32,884 INFO L93 Difference]: Finished difference Result 3304 states and 4867 transitions. [2024-11-28 02:41:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:41:32,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 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 407 [2024-11-28 02:41:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:32,891 INFO L225 Difference]: With dead ends: 3304 [2024-11-28 02:41:32,891 INFO L226 Difference]: Without dead ends: 2176 [2024-11-28 02:41:32,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:32,893 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 1802 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:32,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 3481 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:41:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2024-11-28 02:41:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1322. [2024-11-28 02:41:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 1.4663133989401969) internal successors, (1937), 1321 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1937 transitions. [2024-11-28 02:41:32,925 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1937 transitions. Word has length 407 [2024-11-28 02:41:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:32,925 INFO L471 AbstractCegarLoop]: Abstraction has 1322 states and 1937 transitions. [2024-11-28 02:41:32,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1937 transitions. [2024-11-28 02:41:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-28 02:41:32,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:32,930 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:32,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:41:33,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:33,130 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:33,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2051459967, now seen corresponding path program 1 times [2024-11-28 02:41:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84673739] [2024-11-28 02:41:33,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84673739] [2024-11-28 02:41:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84673739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108088430] [2024-11-28 02:41:33,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:33,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:33,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:33,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:41:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:34,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:41:34,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:35,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:35,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108088430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:35,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:35,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:35,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182863049] [2024-11-28 02:41:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:35,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:35,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:35,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:35,161 INFO L87 Difference]: Start difference. First operand 1322 states and 1937 transitions. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:35,879 INFO L93 Difference]: Finished difference Result 3375 states and 4946 transitions. [2024-11-28 02:41:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:41:35,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 408 [2024-11-28 02:41:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:35,885 INFO L225 Difference]: With dead ends: 3375 [2024-11-28 02:41:35,885 INFO L226 Difference]: Without dead ends: 2303 [2024-11-28 02:41:35,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:35,887 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2058 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:35,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 3075 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:41:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2024-11-28 02:41:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1826. [2024-11-28 02:41:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.4504109589041096) internal successors, (2647), 1825 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2647 transitions. [2024-11-28 02:41:35,923 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2647 transitions. Word has length 408 [2024-11-28 02:41:35,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:35,923 INFO L471 AbstractCegarLoop]: Abstraction has 1826 states and 2647 transitions. [2024-11-28 02:41:35,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2647 transitions. [2024-11-28 02:41:35,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-28 02:41:35,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:35,929 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:35,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:36,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:36,130 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:36,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:36,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1915333596, now seen corresponding path program 1 times [2024-11-28 02:41:36,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:36,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611283757] [2024-11-28 02:41:36,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:36,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611283757] [2024-11-28 02:41:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611283757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:37,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795098298] [2024-11-28 02:41:37,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:37,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:37,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:37,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:37,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:41:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:37,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:41:37,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:38,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:38,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795098298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:38,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:38,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 02:41:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350605771] [2024-11-28 02:41:38,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:38,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:38,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:38,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:38,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:38,605 INFO L87 Difference]: Start difference. First operand 1826 states and 2647 transitions. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:39,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:39,363 INFO L93 Difference]: Finished difference Result 3724 states and 5444 transitions. [2024-11-28 02:41:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:41:39,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2024-11-28 02:41:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:39,372 INFO L225 Difference]: With dead ends: 3724 [2024-11-28 02:41:39,372 INFO L226 Difference]: Without dead ends: 2300 [2024-11-28 02:41:39,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:39,376 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 1464 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:39,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3072 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:41:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2024-11-28 02:41:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2298. [2024-11-28 02:41:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2297 states have (on average 1.4606007836308228) internal successors, (3355), 2297 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3355 transitions. [2024-11-28 02:41:39,415 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3355 transitions. Word has length 409 [2024-11-28 02:41:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:39,415 INFO L471 AbstractCegarLoop]: Abstraction has 2298 states and 3355 transitions. [2024-11-28 02:41:39,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3355 transitions. [2024-11-28 02:41:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-28 02:41:39,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:39,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:39,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:41:39,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:41:39,622 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:39,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:39,623 INFO L85 PathProgramCache]: Analyzing trace with hash -869800655, now seen corresponding path program 1 times [2024-11-28 02:41:39,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:39,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920448292] [2024-11-28 02:41:39,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:39,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920448292] [2024-11-28 02:41:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920448292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886684138] [2024-11-28 02:41:40,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:40,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:40,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:41:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:41,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 02:41:41,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:42,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:42,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886684138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:42,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:42,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2024-11-28 02:41:42,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559875667] [2024-11-28 02:41:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:42,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:41:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:42,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:41:42,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:41:42,761 INFO L87 Difference]: Start difference. First operand 2298 states and 3355 transitions. Second operand has 16 states, 16 states have (on average 25.5625) internal successors, (409), 16 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:45,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:45,235 INFO L93 Difference]: Finished difference Result 6849 states and 10063 transitions. [2024-11-28 02:41:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:41:45,236 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 25.5625) internal successors, (409), 16 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2024-11-28 02:41:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:45,246 INFO L225 Difference]: With dead ends: 6849 [2024-11-28 02:41:45,246 INFO L226 Difference]: Without dead ends: 4953 [2024-11-28 02:41:45,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:41:45,250 INFO L435 NwaCegarLoop]: 1689 mSDtfsCounter, 2397 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 4153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 14371 SdHoareTripleChecker+Invalid, 4159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:45,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 14371 Invalid, 4159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4153 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 02:41:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2024-11-28 02:41:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 3511. [2024-11-28 02:41:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3510 states have (on average 1.4649572649572649) internal successors, (5142), 3510 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5142 transitions. [2024-11-28 02:41:45,306 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5142 transitions. Word has length 409 [2024-11-28 02:41:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:45,307 INFO L471 AbstractCegarLoop]: Abstraction has 3511 states and 5142 transitions. [2024-11-28 02:41:45,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 25.5625) internal successors, (409), 16 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5142 transitions. [2024-11-28 02:41:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-28 02:41:45,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:45,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:45,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:45,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:41:45,515 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:45,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2045345238, now seen corresponding path program 1 times [2024-11-28 02:41:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491116902] [2024-11-28 02:41:45,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:46,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:46,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491116902] [2024-11-28 02:41:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491116902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299510295] [2024-11-28 02:41:46,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:46,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:46,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:46,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:46,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:41:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:47,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:41:47,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:48,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299510295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:48,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:48,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:41:48,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803905959] [2024-11-28 02:41:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:48,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:41:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:48,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:41:48,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:41:48,433 INFO L87 Difference]: Start difference. First operand 3511 states and 5142 transitions. Second operand has 8 states, 8 states have (on average 51.25) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:49,667 INFO L93 Difference]: Finished difference Result 7999 states and 11756 transitions. [2024-11-28 02:41:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:41:49,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 51.25) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2024-11-28 02:41:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:49,674 INFO L225 Difference]: With dead ends: 7999 [2024-11-28 02:41:49,675 INFO L226 Difference]: Without dead ends: 4969 [2024-11-28 02:41:49,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:41:49,677 INFO L435 NwaCegarLoop]: 1252 mSDtfsCounter, 1428 mSDsluCounter, 5753 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 7005 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:49,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 7005 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:41:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2024-11-28 02:41:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 4551. [2024-11-28 02:41:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 4550 states have (on average 1.4646153846153847) internal successors, (6664), 4550 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 6664 transitions. [2024-11-28 02:41:49,738 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 6664 transitions. Word has length 410 [2024-11-28 02:41:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:49,739 INFO L471 AbstractCegarLoop]: Abstraction has 4551 states and 6664 transitions. [2024-11-28 02:41:49,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 51.25) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 6664 transitions. [2024-11-28 02:41:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-28 02:41:49,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:49,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:49,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:49,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:41:49,951 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:49,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:49,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1841786425, now seen corresponding path program 1 times [2024-11-28 02:41:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:49,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592913447] [2024-11-28 02:41:49,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:50,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592913447] [2024-11-28 02:41:50,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592913447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283999239] [2024-11-28 02:41:50,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:50,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:50,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:50,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:41:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:51,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 02:41:51,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 49 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:52,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:41:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283999239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:41:54,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:41:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 15] total 33 [2024-11-28 02:41:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863696497] [2024-11-28 02:41:54,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:41:54,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:41:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:54,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:41:54,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:41:54,337 INFO L87 Difference]: Start difference. First operand 4551 states and 6664 transitions. Second operand has 33 states, 33 states have (on average 29.151515151515152) internal successors, (962), 33 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:05,282 INFO L93 Difference]: Finished difference Result 38326 states and 56631 transitions. [2024-11-28 02:42:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2024-11-28 02:42:05,282 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 29.151515151515152) internal successors, (962), 33 states have internal predecessors, (962), 0 states have call successors, (0), 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 410 [2024-11-28 02:42:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:05,333 INFO L225 Difference]: With dead ends: 38326 [2024-11-28 02:42:05,333 INFO L226 Difference]: Without dead ends: 30274 [2024-11-28 02:42:05,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9553 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2277, Invalid=26453, Unknown=0, NotChecked=0, Total=28730 [2024-11-28 02:42:05,345 INFO L435 NwaCegarLoop]: 3169 mSDtfsCounter, 8767 mSDsluCounter, 63113 mSDsCounter, 0 mSdLazyCounter, 11967 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8767 SdHoareTripleChecker+Valid, 66282 SdHoareTripleChecker+Invalid, 12093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 11967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:05,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8767 Valid, 66282 Invalid, 12093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 11967 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-28 02:42:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30274 states. [2024-11-28 02:42:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30274 to 14262. [2024-11-28 02:42:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14262 states, 14261 states have (on average 1.4688310777645326) internal successors, (20947), 14261 states have internal predecessors, (20947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14262 states to 14262 states and 20947 transitions. [2024-11-28 02:42:05,692 INFO L78 Accepts]: Start accepts. Automaton has 14262 states and 20947 transitions. Word has length 410 [2024-11-28 02:42:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:05,692 INFO L471 AbstractCegarLoop]: Abstraction has 14262 states and 20947 transitions. [2024-11-28 02:42:05,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 29.151515151515152) internal successors, (962), 33 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 14262 states and 20947 transitions. [2024-11-28 02:42:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-28 02:42:05,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:05,710 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:05,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:42:05,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 02:42:05,911 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:05,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1594190310, now seen corresponding path program 1 times [2024-11-28 02:42:05,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:05,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794708810] [2024-11-28 02:42:05,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:06,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:06,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794708810] [2024-11-28 02:42:06,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794708810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:42:06,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934233185] [2024-11-28 02:42:06,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:06,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:06,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:06,690 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:06,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:42:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:07,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:42:07,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:08,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:42:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934233185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:42:09,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:42:09,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 11] total 27 [2024-11-28 02:42:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145729525] [2024-11-28 02:42:09,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:42:09,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:42:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:09,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:42:09,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:42:09,613 INFO L87 Difference]: Start difference. First operand 14262 states and 20947 transitions. Second operand has 27 states, 27 states have (on average 40.851851851851855) internal successors, (1103), 27 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:44,901 INFO L93 Difference]: Finished difference Result 374920 states and 555525 transitions. [2024-11-28 02:42:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 368 states. [2024-11-28 02:42:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 40.851851851851855) internal successors, (1103), 27 states have internal predecessors, (1103), 0 states have call successors, (0), 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 411 [2024-11-28 02:42:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:45,515 INFO L225 Difference]: With dead ends: 374920 [2024-11-28 02:42:45,515 INFO L226 Difference]: Without dead ends: 361124 [2024-11-28 02:42:45,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63942 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=13269, Invalid=137663, Unknown=0, NotChecked=0, Total=150932 [2024-11-28 02:42:45,580 INFO L435 NwaCegarLoop]: 4548 mSDtfsCounter, 44840 mSDsluCounter, 64836 mSDsCounter, 0 mSdLazyCounter, 23315 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44840 SdHoareTripleChecker+Valid, 69384 SdHoareTripleChecker+Invalid, 23455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 23315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:45,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44840 Valid, 69384 Invalid, 23455 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [140 Valid, 23315 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2024-11-28 02:42:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361124 states. [2024-11-28 02:42:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361124 to 28357. [2024-11-28 02:42:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 28356 states have (on average 1.4607490478205671) internal successors, (41421), 28356 states have internal predecessors, (41421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 41421 transitions. [2024-11-28 02:42:47,531 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 41421 transitions. Word has length 411 [2024-11-28 02:42:47,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:47,532 INFO L471 AbstractCegarLoop]: Abstraction has 28357 states and 41421 transitions. [2024-11-28 02:42:47,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 40.851851851851855) internal successors, (1103), 27 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 41421 transitions. [2024-11-28 02:42:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-28 02:42:47,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:47,573 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:47,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:42:47,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26e5fe1-b20b-450f-8eb5-3c1a0306889b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 02:42:47,774 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:47,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1756272768, now seen corresponding path program 1 times [2024-11-28 02:42:47,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:47,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492414513] [2024-11-28 02:42:47,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:47,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:42:49,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492414513] [2024-11-28 02:42:49,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492414513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:49,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:49,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:42:49,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971494735] [2024-11-28 02:42:49,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:49,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:42:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:49,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:42:49,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:49,263 INFO L87 Difference]: Start difference. First operand 28357 states and 41421 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:49,424 INFO L93 Difference]: Finished difference Result 53236 states and 78031 transitions. [2024-11-28 02:42:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:49,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 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 413 [2024-11-28 02:42:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:49,465 INFO L225 Difference]: With dead ends: 53236 [2024-11-28 02:42:49,465 INFO L226 Difference]: Without dead ends: 28537 [2024-11-28 02:42:49,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:49,488 INFO L435 NwaCegarLoop]: 1022 mSDtfsCounter, 0 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:49,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3047 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:42:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28537 states. [2024-11-28 02:42:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28537 to 28357. [2024-11-28 02:42:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 28356 states have (on average 1.4607490478205671) internal successors, (41421), 28356 states have internal predecessors, (41421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 41421 transitions. [2024-11-28 02:42:49,882 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 41421 transitions. Word has length 413 [2024-11-28 02:42:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:49,883 INFO L471 AbstractCegarLoop]: Abstraction has 28357 states and 41421 transitions. [2024-11-28 02:42:49,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 41421 transitions. [2024-11-28 02:42:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-28 02:42:49,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:49,918 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:49,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:42:49,918 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:49,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1629980409, now seen corresponding path program 1 times [2024-11-28 02:42:49,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:49,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615350579] [2024-11-28 02:42:49,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:49,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 02:42:50,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:50,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615350579] [2024-11-28 02:42:50,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615350579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:50,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:50,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:42:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335000678] [2024-11-28 02:42:50,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:50,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:42:50,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:50,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:42:50,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:50,841 INFO L87 Difference]: Start difference. First operand 28357 states and 41421 transitions. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:51,015 INFO L93 Difference]: Finished difference Result 53236 states and 78031 transitions. [2024-11-28 02:42:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:51,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 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 414 [2024-11-28 02:42:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:51,047 INFO L225 Difference]: With dead ends: 53236 [2024-11-28 02:42:51,047 INFO L226 Difference]: Without dead ends: 28537 [2024-11-28 02:42:51,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:51,069 INFO L435 NwaCegarLoop]: 1022 mSDtfsCounter, 0 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:51,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4055 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:42:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28537 states. [2024-11-28 02:42:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28537 to 28357. [2024-11-28 02:42:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 28356 states have (on average 1.4607490478205671) internal successors, (41421), 28356 states have internal predecessors, (41421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 41421 transitions. [2024-11-28 02:42:51,568 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 41421 transitions. Word has length 414 [2024-11-28 02:42:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:51,568 INFO L471 AbstractCegarLoop]: Abstraction has 28357 states and 41421 transitions. [2024-11-28 02:42:51,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 41421 transitions. [2024-11-28 02:42:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-28 02:42:51,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:51,600 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:51,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:42:51,600 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:51,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:51,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1535864832, now seen corresponding path program 1 times [2024-11-28 02:42:51,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:51,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065412415] [2024-11-28 02:42:51,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:51,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065412415] [2024-11-28 02:42:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065412415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:52,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:42:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009344861] [2024-11-28 02:42:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:52,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:42:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:52,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:42:52,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:42:52,690 INFO L87 Difference]: Start difference. First operand 28357 states and 41421 transitions. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:53,542 INFO L93 Difference]: Finished difference Result 78847 states and 115446 transitions. [2024-11-28 02:42:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:42:53,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 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 415 [2024-11-28 02:42:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:53,580 INFO L225 Difference]: With dead ends: 78847 [2024-11-28 02:42:53,580 INFO L226 Difference]: Without dead ends: 54140 [2024-11-28 02:42:53,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:42:53,602 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2024 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:53,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 2769 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:42:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54140 states. [2024-11-28 02:42:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54140 to 40746. [2024-11-28 02:42:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40746 states, 40745 states have (on average 1.4478340900724016) internal successors, (58992), 40745 states have internal predecessors, (58992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40746 states to 40746 states and 58992 transitions. [2024-11-28 02:42:54,122 INFO L78 Accepts]: Start accepts. Automaton has 40746 states and 58992 transitions. Word has length 415 [2024-11-28 02:42:54,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:54,122 INFO L471 AbstractCegarLoop]: Abstraction has 40746 states and 58992 transitions. [2024-11-28 02:42:54,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:54,122 INFO L276 IsEmpty]: Start isEmpty. Operand 40746 states and 58992 transitions. [2024-11-28 02:42:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-28 02:42:54,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:54,158 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:54,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:42:54,158 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:54,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2017565812, now seen corresponding path program 1 times [2024-11-28 02:42:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431554280] [2024-11-28 02:42:54,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:55,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:55,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431554280] [2024-11-28 02:42:55,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431554280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:55,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:55,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:42:55,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182964343] [2024-11-28 02:42:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:55,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:42:55,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:55,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:42:55,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:42:55,667 INFO L87 Difference]: Start difference. First operand 40746 states and 58992 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:56,650 INFO L93 Difference]: Finished difference Result 111714 states and 162121 transitions. [2024-11-28 02:42:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:42:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2024-11-28 02:42:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:56,700 INFO L225 Difference]: With dead ends: 111714 [2024-11-28 02:42:56,701 INFO L226 Difference]: Without dead ends: 77591 [2024-11-28 02:42:56,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:42:56,732 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2284 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:56,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2284 Valid, 3075 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:42:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77591 states. [2024-11-28 02:42:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77591 to 69648. [2024-11-28 02:42:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69648 states, 69647 states have (on average 1.440320473243643) internal successors, (100314), 69647 states have internal predecessors, (100314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69648 states to 69648 states and 100314 transitions. [2024-11-28 02:42:57,597 INFO L78 Accepts]: Start accepts. Automaton has 69648 states and 100314 transitions. Word has length 416 [2024-11-28 02:42:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:57,597 INFO L471 AbstractCegarLoop]: Abstraction has 69648 states and 100314 transitions. [2024-11-28 02:42:57,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 69648 states and 100314 transitions. [2024-11-28 02:42:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-28 02:42:57,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:57,655 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:57,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 02:42:57,655 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:57,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1923306452, now seen corresponding path program 1 times [2024-11-28 02:42:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066481815] [2024-11-28 02:42:57,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066481815] [2024-11-28 02:42:58,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066481815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:58,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:58,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:42:58,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941337397] [2024-11-28 02:42:58,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:58,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:42:58,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:58,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:42:58,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:42:58,944 INFO L87 Difference]: Start difference. First operand 69648 states and 100314 transitions. Second operand has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:00,304 INFO L93 Difference]: Finished difference Result 189223 states and 273188 transitions. [2024-11-28 02:43:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:43:00,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 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 417 [2024-11-28 02:43:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:00,391 INFO L225 Difference]: With dead ends: 189223 [2024-11-28 02:43:00,391 INFO L226 Difference]: Without dead ends: 132608 [2024-11-28 02:43:00,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:43:00,420 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2348 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:00,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 3076 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:43:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132608 states. [2024-11-28 02:43:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132608 to 125532. [2024-11-28 02:43:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125532 states, 125531 states have (on average 1.4345301160669477) internal successors, (180078), 125531 states have internal predecessors, (180078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125532 states to 125532 states and 180078 transitions. [2024-11-28 02:43:01,794 INFO L78 Accepts]: Start accepts. Automaton has 125532 states and 180078 transitions. Word has length 417 [2024-11-28 02:43:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:01,795 INFO L471 AbstractCegarLoop]: Abstraction has 125532 states and 180078 transitions. [2024-11-28 02:43:01,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 125532 states and 180078 transitions. [2024-11-28 02:43:02,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-28 02:43:02,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:02,269 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:02,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 02:43:02,269 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:02,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1094443024, now seen corresponding path program 1 times [2024-11-28 02:43:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452600002] [2024-11-28 02:43:02,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:03,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452600002] [2024-11-28 02:43:03,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452600002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:03,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:03,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:43:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129867590] [2024-11-28 02:43:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:03,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:43:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:03,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:43:03,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:43:03,682 INFO L87 Difference]: Start difference. First operand 125532 states and 180078 transitions. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:05,303 INFO L93 Difference]: Finished difference Result 338957 states and 487398 transitions. [2024-11-28 02:43:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:43:05,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 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 418 [2024-11-28 02:43:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:05,459 INFO L225 Difference]: With dead ends: 338957 [2024-11-28 02:43:05,459 INFO L226 Difference]: Without dead ends: 238628 [2024-11-28 02:43:05,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:43:05,500 INFO L435 NwaCegarLoop]: 1106 mSDtfsCounter, 1665 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:05,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 3624 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:43:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238628 states. [2024-11-28 02:43:08,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238628 to 232500. [2024-11-28 02:43:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232500 states, 232499 states have (on average 1.4297093750940864) internal successors, (332406), 232499 states have internal predecessors, (332406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232500 states to 232500 states and 332406 transitions. [2024-11-28 02:43:08,733 INFO L78 Accepts]: Start accepts. Automaton has 232500 states and 332406 transitions. Word has length 418 [2024-11-28 02:43:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:08,733 INFO L471 AbstractCegarLoop]: Abstraction has 232500 states and 332406 transitions. [2024-11-28 02:43:08,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 232500 states and 332406 transitions. [2024-11-28 02:43:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-28 02:43:08,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:08,979 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:08,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 02:43:08,979 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:08,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1062351603, now seen corresponding path program 1 times [2024-11-28 02:43:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:08,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055452603] [2024-11-28 02:43:08,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055452603] [2024-11-28 02:43:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055452603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:10,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:10,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:43:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750093442] [2024-11-28 02:43:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:10,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:43:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:10,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:43:10,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:43:10,236 INFO L87 Difference]: Start difference. First operand 232500 states and 332406 transitions. Second operand has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:12,007 INFO L93 Difference]: Finished difference Result 476816 states and 689453 transitions. [2024-11-28 02:43:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:43:12,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2024-11-28 02:43:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:12,619 INFO L225 Difference]: With dead ends: 476816 [2024-11-28 02:43:12,619 INFO L226 Difference]: Without dead ends: 293234 [2024-11-28 02:43:12,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:43:12,681 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 1390 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:12,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 3078 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:43:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293234 states. [2024-11-28 02:43:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293234 to 293184. [2024-11-28 02:43:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293184 states, 293183 states have (on average 1.4432146475068472) internal successors, (423126), 293183 states have internal predecessors, (423126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293184 states to 293184 states and 423126 transitions. [2024-11-28 02:43:17,030 INFO L78 Accepts]: Start accepts. Automaton has 293184 states and 423126 transitions. Word has length 419 [2024-11-28 02:43:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:17,031 INFO L471 AbstractCegarLoop]: Abstraction has 293184 states and 423126 transitions. [2024-11-28 02:43:17,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 293184 states and 423126 transitions. [2024-11-28 02:43:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-28 02:43:17,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:17,346 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:17,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 02:43:17,346 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:17,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 176013487, now seen corresponding path program 1 times [2024-11-28 02:43:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:17,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809373458] [2024-11-28 02:43:17,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:18,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:18,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809373458] [2024-11-28 02:43:18,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809373458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:18,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:18,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:43:18,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579880686] [2024-11-28 02:43:18,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:18,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:43:18,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:18,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:43:18,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:43:18,594 INFO L87 Difference]: Start difference. First operand 293184 states and 423126 transitions. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:21,112 INFO L93 Difference]: Finished difference Result 536865 states and 779234 transitions. [2024-11-28 02:43:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:43:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2024-11-28 02:43:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:21,306 INFO L225 Difference]: With dead ends: 536865 [2024-11-28 02:43:21,306 INFO L226 Difference]: Without dead ends: 292094 [2024-11-28 02:43:21,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:43:21,369 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 887 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:21,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1548 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:43:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292094 states. [2024-11-28 02:43:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292094 to 292094. [2024-11-28 02:43:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292094 states, 292093 states have (on average 1.4398599076321583) internal successors, (420573), 292093 states have internal predecessors, (420573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)