./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:45:25,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:45:25,271 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:45:25,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:45:25,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:45:25,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:45:25,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:45:25,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:45:25,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:45:25,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:45:25,324 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:45:25,324 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:45:25,325 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:45:25,325 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:45:25,325 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:45:25,326 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:45:25,326 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:45:25,326 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:45:25,327 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:45:25,327 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:45:25,327 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:45:25,327 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:45:25,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:45:25,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:45:25,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:45:25,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:45:25,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:45:25,329 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b [2024-11-14 04:45:25,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:45:25,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:45:25,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:45:25,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:45:25,685 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:45:25,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-14 04:45:27,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:45:28,082 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:45:28,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-14 04:45:28,094 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/data/d93d9b359/ea3ea9554e8d49e3b4eb36e06e93005d/FLAG3aafb6940 [2024-11-14 04:45:28,111 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/data/d93d9b359/ea3ea9554e8d49e3b4eb36e06e93005d [2024-11-14 04:45:28,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:45:28,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:45:28,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:45:28,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:45:28,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:45:28,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7293fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28, skipping insertion in model container [2024-11-14 04:45:28,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:45:28,452 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_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2024-11-14 04:45:28,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:45:28,523 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:45:28,580 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_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2024-11-14 04:45:28,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:45:28,642 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:45:28,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28 WrapperNode [2024-11-14 04:45:28,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:45:28,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:45:28,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:45:28,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:45:28,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,714 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 668 [2024-11-14 04:45:28,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:45:28,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:45:28,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:45:28,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:45:28,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:45:28,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:45:28,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:45:28,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:45:28,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (1/1) ... [2024-11-14 04:45:28,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:45:28,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:45:28,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:45:28,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:45:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:45:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:45:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:45:28,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:45:28,989 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:45:28,992 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:45:29,859 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-11-14 04:45:29,859 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:45:30,109 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:45:30,110 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:45:30,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:45:30 BoogieIcfgContainer [2024-11-14 04:45:30,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:45:30,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:45:30,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:45:30,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:45:30,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:45:28" (1/3) ... [2024-11-14 04:45:30,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb3f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:45:30, skipping insertion in model container [2024-11-14 04:45:30,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:28" (2/3) ... [2024-11-14 04:45:30,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb3f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:45:30, skipping insertion in model container [2024-11-14 04:45:30,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:45:30" (3/3) ... [2024-11-14 04:45:30,125 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-14 04:45:30,143 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:45:30,145 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c that has 1 procedures, 121 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 04:45:30,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:45:30,233 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=FINITE_AUTOMATA, 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;@3c99c872, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:45:30,234 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:45:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 120 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:30,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 04:45:30,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:30,248 INFO L215 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] [2024-11-14 04:45:30,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:30,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash -399403615, now seen corresponding path program 1 times [2024-11-14 04:45:30,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:30,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304660359] [2024-11-14 04:45:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:31,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304660359] [2024-11-14 04:45:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304660359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:31,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:45:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696572464] [2024-11-14 04:45:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:31,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:45:31,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:45:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:45:31,175 INFO L87 Difference]: Start difference. First operand has 121 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 120 states have internal predecessors, (201), 0 states have call successors, (0), 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 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:31,450 INFO L93 Difference]: Finished difference Result 328 states and 524 transitions. [2024-11-14 04:45:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:45:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-14 04:45:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:31,466 INFO L225 Difference]: With dead ends: 328 [2024-11-14 04:45:31,466 INFO L226 Difference]: Without dead ends: 244 [2024-11-14 04:45:31,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:45:31,477 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 395 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:31,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 690 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:45:31,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-14 04:45:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2024-11-14 04:45:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3723849372384938) internal successors, (328), 239 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 328 transitions. [2024-11-14 04:45:31,540 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 328 transitions. Word has length 43 [2024-11-14 04:45:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:31,541 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 328 transitions. [2024-11-14 04:45:31,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 328 transitions. [2024-11-14 04:45:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 04:45:31,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:31,543 INFO L215 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] [2024-11-14 04:45:31,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:45:31,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:31,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1453914993, now seen corresponding path program 1 times [2024-11-14 04:45:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:31,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434039305] [2024-11-14 04:45:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:31,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434039305] [2024-11-14 04:45:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434039305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:31,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:45:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165880210] [2024-11-14 04:45:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:31,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:45:31,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:31,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:45:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:45:31,763 INFO L87 Difference]: Start difference. First operand 240 states and 328 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:32,042 INFO L93 Difference]: Finished difference Result 531 states and 737 transitions. [2024-11-14 04:45:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:45:32,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-14 04:45:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:32,045 INFO L225 Difference]: With dead ends: 531 [2024-11-14 04:45:32,045 INFO L226 Difference]: Without dead ends: 318 [2024-11-14 04:45:32,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:45:32,050 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 418 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:32,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 167 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:45:32,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-14 04:45:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2024-11-14 04:45:32,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.3746031746031746) internal successors, (433), 315 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:32,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 433 transitions. [2024-11-14 04:45:32,073 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 433 transitions. Word has length 44 [2024-11-14 04:45:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:32,074 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 433 transitions. [2024-11-14 04:45:32,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 433 transitions. [2024-11-14 04:45:32,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 04:45:32,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:32,075 INFO L215 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] [2024-11-14 04:45:32,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:45:32,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:32,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1896200896, now seen corresponding path program 1 times [2024-11-14 04:45:32,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:32,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093510838] [2024-11-14 04:45:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:32,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:32,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:32,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093510838] [2024-11-14 04:45:32,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093510838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:32,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:32,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:45:32,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636585428] [2024-11-14 04:45:32,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:32,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:45:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:32,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:45:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:45:32,310 INFO L87 Difference]: Start difference. First operand 316 states and 433 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:32,562 INFO L93 Difference]: Finished difference Result 765 states and 1070 transitions. [2024-11-14 04:45:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:45:32,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-14 04:45:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:32,565 INFO L225 Difference]: With dead ends: 765 [2024-11-14 04:45:32,566 INFO L226 Difference]: Without dead ends: 492 [2024-11-14 04:45:32,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:45:32,568 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 397 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:32,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 178 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:45:32,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-14 04:45:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2024-11-14 04:45:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.3865030674846626) internal successors, (678), 489 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 678 transitions. [2024-11-14 04:45:32,600 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 678 transitions. Word has length 44 [2024-11-14 04:45:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:32,600 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 678 transitions. [2024-11-14 04:45:32,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 678 transitions. [2024-11-14 04:45:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 04:45:32,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:32,605 INFO L215 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] [2024-11-14 04:45:32,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:45:32,605 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:32,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash -854511281, now seen corresponding path program 1 times [2024-11-14 04:45:32,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:32,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305755705] [2024-11-14 04:45:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:32,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:32,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305755705] [2024-11-14 04:45:32,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305755705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:32,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:32,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:45:32,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366318062] [2024-11-14 04:45:32,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:32,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:45:32,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:32,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:45:32,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:45:32,771 INFO L87 Difference]: Start difference. First operand 490 states and 678 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:32,997 INFO L93 Difference]: Finished difference Result 1267 states and 1784 transitions. [2024-11-14 04:45:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:45:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-14 04:45:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:33,004 INFO L225 Difference]: With dead ends: 1267 [2024-11-14 04:45:33,004 INFO L226 Difference]: Without dead ends: 840 [2024-11-14 04:45:33,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:45:33,006 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 380 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:33,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 186 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:45:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-11-14 04:45:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 838. [2024-11-14 04:45:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.3954599761051374) internal successors, (1168), 837 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1168 transitions. [2024-11-14 04:45:33,065 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1168 transitions. Word has length 44 [2024-11-14 04:45:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:33,067 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1168 transitions. [2024-11-14 04:45:33,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1168 transitions. [2024-11-14 04:45:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 04:45:33,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:33,069 INFO L215 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] [2024-11-14 04:45:33,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:45:33,072 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:33,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:33,073 INFO L85 PathProgramCache]: Analyzing trace with hash 418886261, now seen corresponding path program 1 times [2024-11-14 04:45:33,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:33,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254504725] [2024-11-14 04:45:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:33,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:33,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254504725] [2024-11-14 04:45:33,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254504725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:33,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:33,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 04:45:33,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337418929] [2024-11-14 04:45:33,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:33,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:45:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:45:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:45:33,906 INFO L87 Difference]: Start difference. First operand 838 states and 1168 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:34,981 INFO L93 Difference]: Finished difference Result 4663 states and 6639 transitions. [2024-11-14 04:45:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:45:34,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-14 04:45:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:35,000 INFO L225 Difference]: With dead ends: 4663 [2024-11-14 04:45:35,002 INFO L226 Difference]: Without dead ends: 3965 [2024-11-14 04:45:35,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:45:35,006 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1035 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:35,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 949 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:45:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2024-11-14 04:45:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 2483. [2024-11-14 04:45:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2482 states have (on average 1.3924254633360194) internal successors, (3456), 2482 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3456 transitions. [2024-11-14 04:45:35,152 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3456 transitions. Word has length 45 [2024-11-14 04:45:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:35,152 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 3456 transitions. [2024-11-14 04:45:35,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3456 transitions. [2024-11-14 04:45:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 04:45:35,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:35,158 INFO L215 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] [2024-11-14 04:45:35,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:45:35,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:35,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash -750029227, now seen corresponding path program 1 times [2024-11-14 04:45:35,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129304619] [2024-11-14 04:45:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:35,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:35,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:35,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129304619] [2024-11-14 04:45:35,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129304619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:35,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:35,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 04:45:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492562272] [2024-11-14 04:45:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:35,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:45:35,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:45:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:45:35,847 INFO L87 Difference]: Start difference. First operand 2483 states and 3456 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:36,762 INFO L93 Difference]: Finished difference Result 4263 states and 5980 transitions. [2024-11-14 04:45:36,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:45:36,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-14 04:45:36,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:36,781 INFO L225 Difference]: With dead ends: 4263 [2024-11-14 04:45:36,781 INFO L226 Difference]: Without dead ends: 3787 [2024-11-14 04:45:36,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:45:36,785 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 946 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:36,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 998 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:45:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2024-11-14 04:45:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3067. [2024-11-14 04:45:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3066 states have (on average 1.3842139595564253) internal successors, (4244), 3066 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4244 transitions. [2024-11-14 04:45:36,887 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4244 transitions. Word has length 45 [2024-11-14 04:45:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:36,887 INFO L471 AbstractCegarLoop]: Abstraction has 3067 states and 4244 transitions. [2024-11-14 04:45:36,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:36,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4244 transitions. [2024-11-14 04:45:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 04:45:36,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:36,890 INFO L215 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] [2024-11-14 04:45:36,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:45:36,891 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:36,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1160282677, now seen corresponding path program 1 times [2024-11-14 04:45:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:36,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937720663] [2024-11-14 04:45:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:37,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:37,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937720663] [2024-11-14 04:45:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937720663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 04:45:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712715271] [2024-11-14 04:45:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:37,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:45:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:45:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:45:37,493 INFO L87 Difference]: Start difference. First operand 3067 states and 4244 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:38,155 INFO L93 Difference]: Finished difference Result 4801 states and 6657 transitions. [2024-11-14 04:45:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:45:38,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-14 04:45:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:38,174 INFO L225 Difference]: With dead ends: 4801 [2024-11-14 04:45:38,174 INFO L226 Difference]: Without dead ends: 4639 [2024-11-14 04:45:38,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:45:38,180 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 1225 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:38,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 858 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:45:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2024-11-14 04:45:38,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 3520. [2024-11-14 04:45:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3519 states have (on average 1.3813583404376244) internal successors, (4861), 3519 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 4861 transitions. [2024-11-14 04:45:38,293 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 4861 transitions. Word has length 45 [2024-11-14 04:45:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:38,293 INFO L471 AbstractCegarLoop]: Abstraction has 3520 states and 4861 transitions. [2024-11-14 04:45:38,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 4861 transitions. [2024-11-14 04:45:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 04:45:38,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:38,295 INFO L215 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] [2024-11-14 04:45:38,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:45:38,295 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:38,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash -352473559, now seen corresponding path program 1 times [2024-11-14 04:45:38,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:38,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110687401] [2024-11-14 04:45:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:38,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:38,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110687401] [2024-11-14 04:45:38,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110687401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:38,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:38,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 04:45:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473742845] [2024-11-14 04:45:38,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:38,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:45:38,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:45:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:45:38,941 INFO L87 Difference]: Start difference. First operand 3520 states and 4861 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:39,591 INFO L93 Difference]: Finished difference Result 8197 states and 11371 transitions. [2024-11-14 04:45:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:45:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-14 04:45:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:39,617 INFO L225 Difference]: With dead ends: 8197 [2024-11-14 04:45:39,617 INFO L226 Difference]: Without dead ends: 7271 [2024-11-14 04:45:39,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2024-11-14 04:45:39,621 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 454 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:39,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1515 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:45:39,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2024-11-14 04:45:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 4856. [2024-11-14 04:45:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4855 states have (on average 1.3857878475798147) internal successors, (6728), 4855 states have internal predecessors, (6728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6728 transitions. [2024-11-14 04:45:39,811 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6728 transitions. Word has length 47 [2024-11-14 04:45:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:39,811 INFO L471 AbstractCegarLoop]: Abstraction has 4856 states and 6728 transitions. [2024-11-14 04:45:39,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6728 transitions. [2024-11-14 04:45:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 04:45:39,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:39,813 INFO L215 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] [2024-11-14 04:45:39,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:45:39,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:39,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1557838345, now seen corresponding path program 1 times [2024-11-14 04:45:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286385311] [2024-11-14 04:45:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:40,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:40,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286385311] [2024-11-14 04:45:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286385311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:40,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 04:45:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616077274] [2024-11-14 04:45:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:40,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:45:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:45:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:45:40,480 INFO L87 Difference]: Start difference. First operand 4856 states and 6728 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:41,319 INFO L93 Difference]: Finished difference Result 7344 states and 10176 transitions. [2024-11-14 04:45:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 04:45:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-14 04:45:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:41,355 INFO L225 Difference]: With dead ends: 7344 [2024-11-14 04:45:41,355 INFO L226 Difference]: Without dead ends: 6646 [2024-11-14 04:45:41,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-11-14 04:45:41,361 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 399 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:41,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1090 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:45:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2024-11-14 04:45:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 4883. [2024-11-14 04:45:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4883 states, 4882 states have (on average 1.383654240065547) internal successors, (6755), 4882 states have internal predecessors, (6755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 6755 transitions. [2024-11-14 04:45:41,506 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 6755 transitions. Word has length 47 [2024-11-14 04:45:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:41,507 INFO L471 AbstractCegarLoop]: Abstraction has 4883 states and 6755 transitions. [2024-11-14 04:45:41,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 6755 transitions. [2024-11-14 04:45:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 04:45:41,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:41,509 INFO L215 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] [2024-11-14 04:45:41,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:45:41,509 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:41,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash -783481367, now seen corresponding path program 1 times [2024-11-14 04:45:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:41,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311007814] [2024-11-14 04:45:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:41,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:42,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:42,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311007814] [2024-11-14 04:45:42,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311007814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:42,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:42,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 04:45:42,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958865420] [2024-11-14 04:45:42,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:42,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:45:42,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:45:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:45:42,120 INFO L87 Difference]: Start difference. First operand 4883 states and 6755 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:42,662 INFO L93 Difference]: Finished difference Result 8742 states and 12104 transitions. [2024-11-14 04:45:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 04:45:42,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-14 04:45:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:42,686 INFO L225 Difference]: With dead ends: 8742 [2024-11-14 04:45:42,686 INFO L226 Difference]: Without dead ends: 8588 [2024-11-14 04:45:42,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2024-11-14 04:45:42,690 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 477 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:42,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1325 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:45:42,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8588 states. [2024-11-14 04:45:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8588 to 4886. [2024-11-14 04:45:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 4885 states have (on average 1.3834186284544525) internal successors, (6758), 4885 states have internal predecessors, (6758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 6758 transitions. [2024-11-14 04:45:42,853 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 6758 transitions. Word has length 47 [2024-11-14 04:45:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:42,853 INFO L471 AbstractCegarLoop]: Abstraction has 4886 states and 6758 transitions. [2024-11-14 04:45:42,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 6758 transitions. [2024-11-14 04:45:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 04:45:42,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:42,855 INFO L215 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] [2024-11-14 04:45:42,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 04:45:42,855 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:42,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1311194507, now seen corresponding path program 1 times [2024-11-14 04:45:42,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:42,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522793965] [2024-11-14 04:45:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:42,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:42,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522793965] [2024-11-14 04:45:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522793965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:42,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:45:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332638255] [2024-11-14 04:45:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:42,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:45:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:45:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:42,938 INFO L87 Difference]: Start difference. First operand 4886 states and 6758 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:43,031 INFO L93 Difference]: Finished difference Result 8711 states and 12117 transitions. [2024-11-14 04:45:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:45:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-14 04:45:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:43,045 INFO L225 Difference]: With dead ends: 8711 [2024-11-14 04:45:43,045 INFO L226 Difference]: Without dead ends: 4592 [2024-11-14 04:45:43,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:43,051 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 85 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:43,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 271 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:45:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2024-11-14 04:45:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4588. [2024-11-14 04:45:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4587 states have (on average 1.381294964028777) internal successors, (6336), 4587 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 6336 transitions. [2024-11-14 04:45:43,164 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 6336 transitions. Word has length 48 [2024-11-14 04:45:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:43,164 INFO L471 AbstractCegarLoop]: Abstraction has 4588 states and 6336 transitions. [2024-11-14 04:45:43,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 6336 transitions. [2024-11-14 04:45:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 04:45:43,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:43,166 INFO L215 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] [2024-11-14 04:45:43,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 04:45:43,166 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:43,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash 495108210, now seen corresponding path program 1 times [2024-11-14 04:45:43,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:43,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844417716] [2024-11-14 04:45:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:43,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844417716] [2024-11-14 04:45:43,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844417716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:43,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:43,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:45:43,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142263058] [2024-11-14 04:45:43,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:43,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:45:43,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:43,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:45:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:43,243 INFO L87 Difference]: Start difference. First operand 4588 states and 6336 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:43,327 INFO L93 Difference]: Finished difference Result 8127 states and 11277 transitions. [2024-11-14 04:45:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:45:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-14 04:45:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:43,338 INFO L225 Difference]: With dead ends: 8127 [2024-11-14 04:45:43,338 INFO L226 Difference]: Without dead ends: 4335 [2024-11-14 04:45:43,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:43,343 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 78 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:43,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 271 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:45:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2024-11-14 04:45:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 4241. [2024-11-14 04:45:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 4240 states have (on average 1.3783018867924528) internal successors, (5844), 4240 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 5844 transitions. [2024-11-14 04:45:43,423 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 5844 transitions. Word has length 48 [2024-11-14 04:45:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:43,423 INFO L471 AbstractCegarLoop]: Abstraction has 4241 states and 5844 transitions. [2024-11-14 04:45:43,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 5844 transitions. [2024-11-14 04:45:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 04:45:43,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:43,427 INFO L215 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] [2024-11-14 04:45:43,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 04:45:43,427 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:43,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash -984573763, now seen corresponding path program 1 times [2024-11-14 04:45:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:43,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855711922] [2024-11-14 04:45:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:43,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:51,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855711922] [2024-11-14 04:45:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855711922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:51,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:51,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-14 04:45:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551677181] [2024-11-14 04:45:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:51,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:45:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:45:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2024-11-14 04:45:51,167 INFO L87 Difference]: Start difference. First operand 4241 states and 5844 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:58,287 INFO L93 Difference]: Finished difference Result 6304 states and 8682 transitions. [2024-11-14 04:45:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 04:45:58,288 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-14 04:45:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:58,299 INFO L225 Difference]: With dead ends: 6304 [2024-11-14 04:45:58,299 INFO L226 Difference]: Without dead ends: 5551 [2024-11-14 04:45:58,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=672, Invalid=1980, Unknown=0, NotChecked=0, Total=2652 [2024-11-14 04:45:58,304 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 435 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:58,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1188 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 04:45:58,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2024-11-14 04:45:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 4219. [2024-11-14 04:45:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4219 states, 4218 states have (on average 1.3795637743006164) internal successors, (5819), 4218 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 5819 transitions. [2024-11-14 04:45:58,375 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 5819 transitions. Word has length 49 [2024-11-14 04:45:58,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:58,375 INFO L471 AbstractCegarLoop]: Abstraction has 4219 states and 5819 transitions. [2024-11-14 04:45:58,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 5819 transitions. [2024-11-14 04:45:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:45:58,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:58,381 INFO L215 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] [2024-11-14 04:45:58,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 04:45:58,382 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:58,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash 853103391, now seen corresponding path program 1 times [2024-11-14 04:45:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:58,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542122182] [2024-11-14 04:45:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:58,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:58,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542122182] [2024-11-14 04:45:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542122182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:58,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:58,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:45:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551714012] [2024-11-14 04:45:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:58,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:45:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:45:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:58,529 INFO L87 Difference]: Start difference. First operand 4219 states and 5819 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:58,585 INFO L93 Difference]: Finished difference Result 8100 states and 11223 transitions. [2024-11-14 04:45:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:45:58,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-14 04:45:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:58,595 INFO L225 Difference]: With dead ends: 8100 [2024-11-14 04:45:58,595 INFO L226 Difference]: Without dead ends: 5130 [2024-11-14 04:45:58,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:58,599 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:58,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 296 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:45:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2024-11-14 04:45:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 4786. [2024-11-14 04:45:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4786 states, 4785 states have (on average 1.3703239289446185) internal successors, (6557), 4785 states have internal predecessors, (6557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 6557 transitions. [2024-11-14 04:45:58,672 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 6557 transitions. Word has length 55 [2024-11-14 04:45:58,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:58,672 INFO L471 AbstractCegarLoop]: Abstraction has 4786 states and 6557 transitions. [2024-11-14 04:45:58,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 6557 transitions. [2024-11-14 04:45:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 04:45:58,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:58,674 INFO L215 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] [2024-11-14 04:45:58,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 04:45:58,674 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:58,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1644785770, now seen corresponding path program 1 times [2024-11-14 04:45:58,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:58,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976433354] [2024-11-14 04:45:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:58,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:58,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976433354] [2024-11-14 04:45:58,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976433354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:58,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:58,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:45:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359024440] [2024-11-14 04:45:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:58,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:45:58,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:45:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:58,740 INFO L87 Difference]: Start difference. First operand 4786 states and 6557 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:58,795 INFO L93 Difference]: Finished difference Result 7875 states and 10789 transitions. [2024-11-14 04:45:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:45:58,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-14 04:45:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:58,804 INFO L225 Difference]: With dead ends: 7875 [2024-11-14 04:45:58,804 INFO L226 Difference]: Without dead ends: 4106 [2024-11-14 04:45:58,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:58,810 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 73 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:58,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 302 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:45:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2024-11-14 04:45:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4104. [2024-11-14 04:45:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 4103 states have (on average 1.3495003655861564) internal successors, (5537), 4103 states have internal predecessors, (5537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5537 transitions. [2024-11-14 04:45:58,869 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5537 transitions. Word has length 58 [2024-11-14 04:45:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:58,870 INFO L471 AbstractCegarLoop]: Abstraction has 4104 states and 5537 transitions. [2024-11-14 04:45:58,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5537 transitions. [2024-11-14 04:45:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 04:45:58,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:58,873 INFO L215 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] [2024-11-14 04:45:58,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 04:45:58,874 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:58,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash -650446710, now seen corresponding path program 1 times [2024-11-14 04:45:58,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:58,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76001152] [2024-11-14 04:45:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:58,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:58,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76001152] [2024-11-14 04:45:58,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76001152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:58,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:58,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:45:58,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203232006] [2024-11-14 04:45:58,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:58,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:45:58,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:58,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:45:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:58,996 INFO L87 Difference]: Start difference. First operand 4104 states and 5537 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:59,050 INFO L93 Difference]: Finished difference Result 9091 states and 12348 transitions. [2024-11-14 04:45:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:45:59,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-14 04:45:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:59,060 INFO L225 Difference]: With dead ends: 9091 [2024-11-14 04:45:59,061 INFO L226 Difference]: Without dead ends: 5758 [2024-11-14 04:45:59,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:59,066 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 77 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:59,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 278 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:45:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2024-11-14 04:45:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 5141. [2024-11-14 04:45:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 1.3346303501945525) internal successors, (6860), 5140 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 6860 transitions. [2024-11-14 04:45:59,141 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 6860 transitions. Word has length 58 [2024-11-14 04:45:59,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:59,141 INFO L471 AbstractCegarLoop]: Abstraction has 5141 states and 6860 transitions. [2024-11-14 04:45:59,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 6860 transitions. [2024-11-14 04:45:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 04:45:59,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:59,144 INFO L215 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] [2024-11-14 04:45:59,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 04:45:59,144 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:59,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash -515706397, now seen corresponding path program 1 times [2024-11-14 04:45:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679300099] [2024-11-14 04:45:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:59,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:59,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679300099] [2024-11-14 04:45:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679300099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:59,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:59,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:45:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505714410] [2024-11-14 04:45:59,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:59,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:45:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:45:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:59,232 INFO L87 Difference]: Start difference. First operand 5141 states and 6860 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:59,284 INFO L93 Difference]: Finished difference Result 7635 states and 10197 transitions. [2024-11-14 04:45:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:45:59,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-14 04:45:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:59,296 INFO L225 Difference]: With dead ends: 7635 [2024-11-14 04:45:59,296 INFO L226 Difference]: Without dead ends: 5435 [2024-11-14 04:45:59,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:59,300 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 73 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:59,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 315 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:45:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5435 states. [2024-11-14 04:45:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5435 to 5433. [2024-11-14 04:45:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 5432 states have (on average 1.3225331369661266) internal successors, (7184), 5432 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 7184 transitions. [2024-11-14 04:45:59,376 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 7184 transitions. Word has length 61 [2024-11-14 04:45:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:59,377 INFO L471 AbstractCegarLoop]: Abstraction has 5433 states and 7184 transitions. [2024-11-14 04:45:59,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 7184 transitions. [2024-11-14 04:45:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 04:45:59,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:59,378 INFO L215 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] [2024-11-14 04:45:59,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 04:45:59,379 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:59,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash -632537661, now seen corresponding path program 1 times [2024-11-14 04:45:59,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352515208] [2024-11-14 04:45:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:59,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:59,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352515208] [2024-11-14 04:45:59,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352515208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:59,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:59,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:45:59,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096798567] [2024-11-14 04:45:59,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:59,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:45:59,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:59,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:45:59,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:59,496 INFO L87 Difference]: Start difference. First operand 5433 states and 7184 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:59,564 INFO L93 Difference]: Finished difference Result 12893 states and 17148 transitions. [2024-11-14 04:45:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:45:59,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-14 04:45:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:59,581 INFO L225 Difference]: With dead ends: 12893 [2024-11-14 04:45:59,581 INFO L226 Difference]: Without dead ends: 7850 [2024-11-14 04:45:59,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:45:59,588 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 72 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 259 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 [2024-11-14 04:45:59,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 259 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:45:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7850 states. [2024-11-14 04:45:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7850 to 7176. [2024-11-14 04:45:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7176 states, 7175 states have (on average 1.3102439024390244) internal successors, (9401), 7175 states have internal predecessors, (9401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 9401 transitions. [2024-11-14 04:45:59,702 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 9401 transitions. Word has length 61 [2024-11-14 04:45:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:59,702 INFO L471 AbstractCegarLoop]: Abstraction has 7176 states and 9401 transitions. [2024-11-14 04:45:59,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 9401 transitions. [2024-11-14 04:45:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 04:45:59,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:59,704 INFO L215 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] [2024-11-14 04:45:59,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 04:45:59,704 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:59,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash 277828883, now seen corresponding path program 1 times [2024-11-14 04:45:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:59,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314222055] [2024-11-14 04:45:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:59,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:59,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314222055] [2024-11-14 04:45:59,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314222055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:59,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:45:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:45:59,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108216111] [2024-11-14 04:45:59,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:59,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:45:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:45:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:45:59,935 INFO L87 Difference]: Start difference. First operand 7176 states and 9401 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:00,337 INFO L93 Difference]: Finished difference Result 18288 states and 24020 transitions. [2024-11-14 04:46:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:46:00,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-14 04:46:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:00,362 INFO L225 Difference]: With dead ends: 18288 [2024-11-14 04:46:00,363 INFO L226 Difference]: Without dead ends: 11318 [2024-11-14 04:46:00,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:46:00,370 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 816 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:00,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 278 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:46:00,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11318 states. [2024-11-14 04:46:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 8537. [2024-11-14 04:46:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8537 states, 8536 states have (on average 1.287605435801312) internal successors, (10991), 8536 states have internal predecessors, (10991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 10991 transitions. [2024-11-14 04:46:00,503 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 10991 transitions. Word has length 66 [2024-11-14 04:46:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:00,503 INFO L471 AbstractCegarLoop]: Abstraction has 8537 states and 10991 transitions. [2024-11-14 04:46:00,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 10991 transitions. [2024-11-14 04:46:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 04:46:00,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:00,505 INFO L215 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] [2024-11-14 04:46:00,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 04:46:00,505 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:00,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2052672846, now seen corresponding path program 1 times [2024-11-14 04:46:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482663592] [2024-11-14 04:46:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:00,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:00,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482663592] [2024-11-14 04:46:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482663592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:00,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:00,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:46:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177261932] [2024-11-14 04:46:00,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:00,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:46:00,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:46:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:46:00,839 INFO L87 Difference]: Start difference. First operand 8537 states and 10991 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:00,970 INFO L93 Difference]: Finished difference Result 10013 states and 12917 transitions. [2024-11-14 04:46:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:46:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-14 04:46:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:00,992 INFO L225 Difference]: With dead ends: 10013 [2024-11-14 04:46:00,992 INFO L226 Difference]: Without dead ends: 10011 [2024-11-14 04:46:00,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:46:00,998 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 64 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:00,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 713 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:46:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2024-11-14 04:46:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 10011. [2024-11-14 04:46:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10011 states, 10010 states have (on average 1.2848151848151848) internal successors, (12861), 10010 states have internal predecessors, (12861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10011 states to 10011 states and 12861 transitions. [2024-11-14 04:46:01,160 INFO L78 Accepts]: Start accepts. Automaton has 10011 states and 12861 transitions. Word has length 66 [2024-11-14 04:46:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:01,160 INFO L471 AbstractCegarLoop]: Abstraction has 10011 states and 12861 transitions. [2024-11-14 04:46:01,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 10011 states and 12861 transitions. [2024-11-14 04:46:01,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 04:46:01,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:01,162 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:46:01,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 04:46:01,163 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:01,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash -972957037, now seen corresponding path program 1 times [2024-11-14 04:46:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677244447] [2024-11-14 04:46:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:02,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677244447] [2024-11-14 04:46:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677244447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:46:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203203078] [2024-11-14 04:46:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:02,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:46:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:46:02,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:46:02,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:46:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:02,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-14 04:46:02,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:46:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:06,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:46:20,428 WARN L286 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 195 DAG size of output: 169 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:50:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:50:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203203078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1903261306] [2024-11-14 04:50:15,663 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2024-11-14 04:50:15,664 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:15,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:15,673 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:15,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:18,568 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1903261306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:50:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [14, 25, 25] total 99 [2024-11-14 04:50:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197288479] [2024-11-14 04:50:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:50:37,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-14 04:50:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-14 04:50:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1729, Invalid=7973, Unknown=0, NotChecked=0, Total=9702 [2024-11-14 04:50:37,610 INFO L87 Difference]: Start difference. First operand 10011 states and 12861 transitions. Second operand has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 40 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:43,705 INFO L93 Difference]: Finished difference Result 14540 states and 18657 transitions. [2024-11-14 04:50:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-14 04:50:43,706 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 40 states have internal predecessors, (72), 0 states have call successors, (0), 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 76 [2024-11-14 04:50:43,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:43,732 INFO L225 Difference]: With dead ends: 14540 [2024-11-14 04:50:43,733 INFO L226 Difference]: Without dead ends: 9964 [2024-11-14 04:50:43,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=1729, Invalid=7973, Unknown=0, NotChecked=0, Total=9702 [2024-11-14 04:50:43,742 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 11 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 3629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:43,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 237 Invalid, 3629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-14 04:50:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9964 states. [2024-11-14 04:50:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9964 to 9964. [2024-11-14 04:50:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9964 states, 9963 states have (on average 1.2848539596507076) internal successors, (12801), 9963 states have internal predecessors, (12801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9964 states to 9964 states and 12801 transitions. [2024-11-14 04:50:43,969 INFO L78 Accepts]: Start accepts. Automaton has 9964 states and 12801 transitions. Word has length 76 [2024-11-14 04:50:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:43,969 INFO L471 AbstractCegarLoop]: Abstraction has 9964 states and 12801 transitions. [2024-11-14 04:50:43,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 40 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9964 states and 12801 transitions. [2024-11-14 04:50:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 04:50:43,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:43,972 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:50:44,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:50:44,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 04:50:44,178 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:44,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -776724712, now seen corresponding path program 1 times [2024-11-14 04:50:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746018010] [2024-11-14 04:50:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:50:44,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:44,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746018010] [2024-11-14 04:50:44,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746018010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:50:44,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:50:44,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:50:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646977677] [2024-11-14 04:50:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:50:44,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:50:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:44,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:50:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:50:44,485 INFO L87 Difference]: Start difference. First operand 9964 states and 12801 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:45,030 INFO L93 Difference]: Finished difference Result 27571 states and 35575 transitions. [2024-11-14 04:50:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:50:45,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 76 [2024-11-14 04:50:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:45,125 INFO L225 Difference]: With dead ends: 27571 [2024-11-14 04:50:45,125 INFO L226 Difference]: Without dead ends: 18372 [2024-11-14 04:50:45,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:50:45,134 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1032 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:45,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 234 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:50:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18372 states. [2024-11-14 04:50:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18372 to 13310. [2024-11-14 04:50:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13310 states, 13309 states have (on average 1.26869035990683) internal successors, (16885), 13309 states have internal predecessors, (16885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13310 states to 13310 states and 16885 transitions. [2024-11-14 04:50:45,370 INFO L78 Accepts]: Start accepts. Automaton has 13310 states and 16885 transitions. Word has length 76 [2024-11-14 04:50:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:45,370 INFO L471 AbstractCegarLoop]: Abstraction has 13310 states and 16885 transitions. [2024-11-14 04:50:45,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 13310 states and 16885 transitions. [2024-11-14 04:50:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 04:50:45,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:45,374 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:50:45,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-14 04:50:45,374 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:45,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash -654212653, now seen corresponding path program 1 times [2024-11-14 04:50:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:45,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33376276] [2024-11-14 04:50:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:45,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:50:47,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33376276] [2024-11-14 04:50:47,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33376276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49786817] [2024-11-14 04:50:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:47,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:47,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:47,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:47,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:50:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:47,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-14 04:50:47,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:50:50,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:52:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:01,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49786817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:52:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956360771] [2024-11-14 04:52:01,659 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2024-11-14 04:52:01,659 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:52:01,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:52:01,660 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:52:01,660 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:52:05,332 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:52:27,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1956360771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:52:27,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:52:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [19, 24, 24] total 103 [2024-11-14 04:52:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333547134] [2024-11-14 04:52:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:52:27,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-14 04:52:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-14 04:52:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1708, Invalid=8798, Unknown=0, NotChecked=0, Total=10506 [2024-11-14 04:52:27,362 INFO L87 Difference]: Start difference. First operand 13310 states and 16885 transitions. Second operand has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 41 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:52:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:52:32,862 INFO L93 Difference]: Finished difference Result 18201 states and 23117 transitions. [2024-11-14 04:52:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-14 04:52:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 41 states have internal predecessors, (72), 0 states have call successors, (0), 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 76 [2024-11-14 04:52:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:52:32,896 INFO L225 Difference]: With dead ends: 18201 [2024-11-14 04:52:32,896 INFO L226 Difference]: Without dead ends: 13284 [2024-11-14 04:52:32,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 135 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6260 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=1708, Invalid=8798, Unknown=0, NotChecked=0, Total=10506 [2024-11-14 04:52:32,906 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 11 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3386 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:52:32,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 189 Invalid, 3390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3386 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-14 04:52:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13284 states. [2024-11-14 04:52:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13284 to 13282. [2024-11-14 04:52:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13282 states, 13281 states have (on average 1.268880355394925) internal successors, (16852), 13281 states have internal predecessors, (16852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:52:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13282 states to 13282 states and 16852 transitions. [2024-11-14 04:52:33,120 INFO L78 Accepts]: Start accepts. Automaton has 13282 states and 16852 transitions. Word has length 76 [2024-11-14 04:52:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:52:33,120 INFO L471 AbstractCegarLoop]: Abstraction has 13282 states and 16852 transitions. [2024-11-14 04:52:33,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 41 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:52:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 13282 states and 16852 transitions. [2024-11-14 04:52:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 04:52:33,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:33,124 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:52:33,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:52:33,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 04:52:33,325 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:52:33,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1879251439, now seen corresponding path program 1 times [2024-11-14 04:52:33,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663769484] [2024-11-14 04:52:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:52:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:34,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663769484] [2024-11-14 04:52:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663769484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689087915] [2024-11-14 04:52:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:34,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:34,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:52:34,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:52:34,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:52:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:34,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-14 04:52:34,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:52:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:36,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:52:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:43,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689087915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:52:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2020457305] [2024-11-14 04:52:43,587 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2024-11-14 04:52:43,587 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:52:43,588 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:52:43,588 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:52:43,588 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:52:45,075 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:52:59,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2020457305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:52:59,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:52:59,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [14, 17, 18] total 78 [2024-11-14 04:52:59,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188790783] [2024-11-14 04:52:59,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:52:59,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 04:52:59,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 04:52:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=5120, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 04:52:59,878 INFO L87 Difference]: Start difference. First operand 13282 states and 16852 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:53:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:53:04,729 INFO L93 Difference]: Finished difference Result 18549 states and 23586 transitions. [2024-11-14 04:53:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-14 04:53:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 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 76 [2024-11-14 04:53:04,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:53:04,758 INFO L225 Difference]: With dead ends: 18549 [2024-11-14 04:53:04,758 INFO L226 Difference]: Without dead ends: 13245 [2024-11-14 04:53:04,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=886, Invalid=5120, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 04:53:04,767 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 9 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 2668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:53:04,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 192 Invalid, 2668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-14 04:53:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13245 states. [2024-11-14 04:53:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13245 to 13245. [2024-11-14 04:53:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13245 states, 13244 states have (on average 1.2689519782543037) internal successors, (16806), 13244 states have internal predecessors, (16806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:53:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 16806 transitions. [2024-11-14 04:53:04,977 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 16806 transitions. Word has length 76 [2024-11-14 04:53:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:53:04,978 INFO L471 AbstractCegarLoop]: Abstraction has 13245 states and 16806 transitions. [2024-11-14 04:53:04,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:53:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 16806 transitions. [2024-11-14 04:53:04,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:53:04,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:53:04,981 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:53:05,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:53:05,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-14 04:53:05,182 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:53:05,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:53:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2008987025, now seen corresponding path program 1 times [2024-11-14 04:53:05,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:53:05,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659940309] [2024-11-14 04:53:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:53:05,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:53:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:53:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:53:07,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:53:07,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659940309] [2024-11-14 04:53:07,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659940309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:53:07,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155572450] [2024-11-14 04:53:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:53:07,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:53:07,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:53:07,585 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:53:07,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9e5a3-61cb-4fd1-af8a-ebb7078c8341/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:53:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:53:07,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-14 04:53:07,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:53:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:53:11,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:53:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:53:47,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155572450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:53:47,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [73437254] [2024-11-14 04:53:47,305 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2024-11-14 04:53:47,306 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:53:47,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:53:47,306 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:53:47,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:53:51,194 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:54:11,516 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '353058#(and (<= 0 ~mode1~0) (<= 0 ~mode3~0) (<= ~mode2~0 1) (<= ~mode3~0 1) (<= ~mode1~0 1) (<= 0 ~__return_6554~0) (<= 0 ~mode2~0) (exists ((|v_ULTIMATE.start_main_~assert__arg~2#1_27| Int)) (= (mod |v_ULTIMATE.start_main_~assert__arg~2#1_27| 256) 0)) (<= ~__return_6554~0 1))' at error location [2024-11-14 04:54:11,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:54:11,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:54:11,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 23] total 67 [2024-11-14 04:54:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706121527] [2024-11-14 04:54:11,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:54:11,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-14 04:54:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-14 04:54:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1881, Invalid=12161, Unknown=0, NotChecked=0, Total=14042 [2024-11-14 04:54:11,522 INFO L87 Difference]: Start difference. First operand 13245 states and 16806 transitions. Second operand has 67 states, 67 states have (on average 3.5074626865671643) internal successors, (235), 67 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)