./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label44.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label44.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje --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 37cccb3bf38aef2358990f5bb72c991902624e4b903b7b6aaef89921bb90a94d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:37:27,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:37:27,608 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:37:27,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:37:27,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:37:27,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:37:27,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:37:27,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:37:27,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:37:27,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:37:27,655 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:37:27,655 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:37:27,656 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:37:27,656 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:37:27,658 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:37:27,659 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:37:27,659 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:37:27,659 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:37:27,660 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:37:27,660 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:37:27,660 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:37:27,665 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:37:27,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:37:27,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:37:27,666 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:37:27,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:37:27,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:37:27,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:37:27,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:37:27,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:37:27,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:37:27,669 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:37:27,679 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:37:27,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:37:27,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:37:27,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:37:27,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:37:27,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:37:27,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:37:27,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:37:27,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:37:27,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:37:27,683 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:37:27,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:37:27,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:37:27,683 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:37:27,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:37:27,684 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37cccb3bf38aef2358990f5bb72c991902624e4b903b7b6aaef89921bb90a94d [2024-11-09 05:37:27,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:37:27,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:37:27,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:37:27,985 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:37:27,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:37:27,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/eca-rers2012/Problem03_label44.c Unable to find full path for "g++" [2024-11-09 05:37:29,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:37:30,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:37:30,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/sv-benchmarks/c/eca-rers2012/Problem03_label44.c [2024-11-09 05:37:30,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/data/7f4526191/e64d76d8ed36426cb6292835b6dac90d/FLAGaaaeaee26 [2024-11-09 05:37:30,325 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/data/7f4526191/e64d76d8ed36426cb6292835b6dac90d [2024-11-09 05:37:30,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:37:30,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:37:30,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:37:30,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:37:30,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:37:30,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:37:30" (1/1) ... [2024-11-09 05:37:30,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5072719a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:30, skipping insertion in model container [2024-11-09 05:37:30,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:37:30" (1/1) ... [2024-11-09 05:37:30,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:37:31,052 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_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/sv-benchmarks/c/eca-rers2012/Problem03_label44.c[58121,58134] [2024-11-09 05:37:31,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:37:31,112 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:37:31,437 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_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/sv-benchmarks/c/eca-rers2012/Problem03_label44.c[58121,58134] [2024-11-09 05:37:31,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:37:31,475 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:37:31,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31 WrapperNode [2024-11-09 05:37:31,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:37:31,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:37:31,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:37:31,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:37:31,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,630 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 05:37:31,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:37:31,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:37:31,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:37:31,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:37:31,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:37:31,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:37:31,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:37:31,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:37:31,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (1/1) ... [2024-11-09 05:37:31,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:37:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:31,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:37:31,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:37:31,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:37:31,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:37:31,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:37:31,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:37:31,935 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:37:31,939 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:37:34,203 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 05:37:34,203 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:37:34,626 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:37:34,626 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:37:34,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:37:34 BoogieIcfgContainer [2024-11-09 05:37:34,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:37:34,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:37:34,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:37:34,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:37:34,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:37:30" (1/3) ... [2024-11-09 05:37:34,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446fd905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:37:34, skipping insertion in model container [2024-11-09 05:37:34,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:37:31" (2/3) ... [2024-11-09 05:37:34,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446fd905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:37:34, skipping insertion in model container [2024-11-09 05:37:34,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:37:34" (3/3) ... [2024-11-09 05:37:34,640 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label44.c [2024-11-09 05:37:34,661 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:37:34,662 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:37:34,739 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:37:34,748 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;@6d84e2a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:37:34,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:37:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-09 05:37:34,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:34,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:34,771 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:34,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1934949616, now seen corresponding path program 1 times [2024-11-09 05:37:34,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:34,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321096665] [2024-11-09 05:37:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:35,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321096665] [2024-11-09 05:37:35,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321096665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:35,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:35,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:37:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511843116] [2024-11-09 05:37:35,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:35,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:35,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:35,866 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:36,914 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2024-11-09 05:37:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:36,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2024-11-09 05:37:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:36,933 INFO L225 Difference]: With dead ends: 440 [2024-11-09 05:37:36,933 INFO L226 Difference]: Without dead ends: 289 [2024-11-09 05:37:36,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:36,940 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:36,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 47 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:37:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-09 05:37:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-09 05:37:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.8055555555555556) internal successors, (520), 288 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 520 transitions. [2024-11-09 05:37:37,024 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 520 transitions. Word has length 143 [2024-11-09 05:37:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:37,025 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 520 transitions. [2024-11-09 05:37:37,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 520 transitions. [2024-11-09 05:37:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-09 05:37:37,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:37,029 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:37,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:37:37,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:37,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -37350873, now seen corresponding path program 1 times [2024-11-09 05:37:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:37,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918142532] [2024-11-09 05:37:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:37,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:37,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918142532] [2024-11-09 05:37:37,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918142532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:37,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:37,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:37:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933943366] [2024-11-09 05:37:37,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:37,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:37,475 INFO L87 Difference]: Start difference. First operand 289 states and 520 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:38,339 INFO L93 Difference]: Finished difference Result 865 states and 1558 transitions. [2024-11-09 05:37:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:38,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2024-11-09 05:37:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:38,346 INFO L225 Difference]: With dead ends: 865 [2024-11-09 05:37:38,346 INFO L226 Difference]: Without dead ends: 577 [2024-11-09 05:37:38,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:38,349 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 166 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:38,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 69 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:37:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-09 05:37:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2024-11-09 05:37:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.6742160278745644) internal successors, (961), 574 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 961 transitions. [2024-11-09 05:37:38,384 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 961 transitions. Word has length 148 [2024-11-09 05:37:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:38,385 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 961 transitions. [2024-11-09 05:37:38,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 961 transitions. [2024-11-09 05:37:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-09 05:37:38,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:38,390 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:38,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:37:38,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:38,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 588541487, now seen corresponding path program 1 times [2024-11-09 05:37:38,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:38,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876417043] [2024-11-09 05:37:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:38,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:38,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:38,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876417043] [2024-11-09 05:37:38,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876417043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:38,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:38,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:37:38,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900746523] [2024-11-09 05:37:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:38,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:38,694 INFO L87 Difference]: Start difference. First operand 575 states and 961 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:39,593 INFO L93 Difference]: Finished difference Result 1721 states and 2880 transitions. [2024-11-09 05:37:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2024-11-09 05:37:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:39,598 INFO L225 Difference]: With dead ends: 1721 [2024-11-09 05:37:39,598 INFO L226 Difference]: Without dead ends: 1147 [2024-11-09 05:37:39,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:39,601 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 159 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:39,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 23 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 05:37:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-11-09 05:37:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2024-11-09 05:37:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.6282722513089005) internal successors, (1866), 1146 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1866 transitions. [2024-11-09 05:37:39,644 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1866 transitions. Word has length 151 [2024-11-09 05:37:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:39,645 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1866 transitions. [2024-11-09 05:37:39,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1866 transitions. [2024-11-09 05:37:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-09 05:37:39,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:39,652 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:39,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:37:39,652 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:39,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:39,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1401647551, now seen corresponding path program 1 times [2024-11-09 05:37:39,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:39,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313353901] [2024-11-09 05:37:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:39,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:37:40,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313353901] [2024-11-09 05:37:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313353901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:40,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:40,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:37:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652128793] [2024-11-09 05:37:40,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:40,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:37:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:37:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:37:40,573 INFO L87 Difference]: Start difference. First operand 1147 states and 1866 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:41,615 INFO L93 Difference]: Finished difference Result 2434 states and 3994 transitions. [2024-11-09 05:37:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:37:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 158 [2024-11-09 05:37:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:41,624 INFO L225 Difference]: With dead ends: 2434 [2024-11-09 05:37:41,624 INFO L226 Difference]: Without dead ends: 1147 [2024-11-09 05:37:41,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:37:41,630 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 219 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:41,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 11 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:37:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-11-09 05:37:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2024-11-09 05:37:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.4607329842931938) internal successors, (1674), 1146 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1674 transitions. [2024-11-09 05:37:41,666 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1674 transitions. Word has length 158 [2024-11-09 05:37:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:41,666 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1674 transitions. [2024-11-09 05:37:41,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1674 transitions. [2024-11-09 05:37:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 05:37:41,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:41,671 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:41,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:37:41,672 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:41,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash -360988986, now seen corresponding path program 1 times [2024-11-09 05:37:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:41,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585750199] [2024-11-09 05:37:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:41,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:42,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585750199] [2024-11-09 05:37:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585750199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:42,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:37:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446488467] [2024-11-09 05:37:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:42,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:37:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:37:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:37:42,483 INFO L87 Difference]: Start difference. First operand 1147 states and 1674 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:43,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:43,709 INFO L93 Difference]: Finished difference Result 3006 states and 4395 transitions. [2024-11-09 05:37:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:37:43,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2024-11-09 05:37:43,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:43,715 INFO L225 Difference]: With dead ends: 3006 [2024-11-09 05:37:43,716 INFO L226 Difference]: Without dead ends: 1719 [2024-11-09 05:37:43,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:37:43,719 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:43,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 43 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 05:37:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-09 05:37:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2024-11-09 05:37:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.4365541327124562) internal successors, (2468), 1718 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2468 transitions. [2024-11-09 05:37:43,761 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2468 transitions. Word has length 174 [2024-11-09 05:37:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:43,762 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2468 transitions. [2024-11-09 05:37:43,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2468 transitions. [2024-11-09 05:37:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-09 05:37:43,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:43,767 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:43,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:37:43,767 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:43,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1881095745, now seen corresponding path program 1 times [2024-11-09 05:37:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8338756] [2024-11-09 05:37:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 05:37:44,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8338756] [2024-11-09 05:37:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8338756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:44,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:44,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:37:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414884804] [2024-11-09 05:37:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:44,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:44,068 INFO L87 Difference]: Start difference. First operand 1719 states and 2468 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:44,762 INFO L93 Difference]: Finished difference Result 4583 states and 6554 transitions. [2024-11-09 05:37:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:44,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 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 176 [2024-11-09 05:37:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:44,772 INFO L225 Difference]: With dead ends: 4583 [2024-11-09 05:37:44,772 INFO L226 Difference]: Without dead ends: 2865 [2024-11-09 05:37:44,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:44,776 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:44,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 58 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:37:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2024-11-09 05:37:44,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2863. [2024-11-09 05:37:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 1.4206848357791755) internal successors, (4066), 2862 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 4066 transitions. [2024-11-09 05:37:44,857 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 4066 transitions. Word has length 176 [2024-11-09 05:37:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:44,857 INFO L471 AbstractCegarLoop]: Abstraction has 2863 states and 4066 transitions. [2024-11-09 05:37:44,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 4066 transitions. [2024-11-09 05:37:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-09 05:37:44,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:44,864 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:44,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:37:44,864 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:44,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:44,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1089230220, now seen corresponding path program 1 times [2024-11-09 05:37:44,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:44,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462303567] [2024-11-09 05:37:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:44,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:45,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462303567] [2024-11-09 05:37:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462303567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820318233] [2024-11-09 05:37:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:45,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:45,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:45,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:45,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:37:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:45,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:37:45,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 05:37:45,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:37:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820318233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:37:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 05:37:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081544997] [2024-11-09 05:37:45,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:45,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:45,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:45,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:45,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:37:45,825 INFO L87 Difference]: Start difference. First operand 2863 states and 4066 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:46,561 INFO L93 Difference]: Finished difference Result 6154 states and 8788 transitions. [2024-11-09 05:37:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 181 [2024-11-09 05:37:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:46,573 INFO L225 Difference]: With dead ends: 6154 [2024-11-09 05:37:46,573 INFO L226 Difference]: Without dead ends: 3292 [2024-11-09 05:37:46,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:37:46,578 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:46,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 213 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:37:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2024-11-09 05:37:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3292. [2024-11-09 05:37:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 3291 states have (on average 1.4217563050744455) internal successors, (4679), 3291 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4679 transitions. [2024-11-09 05:37:46,677 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4679 transitions. Word has length 181 [2024-11-09 05:37:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:46,678 INFO L471 AbstractCegarLoop]: Abstraction has 3292 states and 4679 transitions. [2024-11-09 05:37:46,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4679 transitions. [2024-11-09 05:37:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-09 05:37:46,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:46,687 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:46,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:37:46,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:37:46,888 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:46,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash 37786488, now seen corresponding path program 1 times [2024-11-09 05:37:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:46,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934482827] [2024-11-09 05:37:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:37:47,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:47,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934482827] [2024-11-09 05:37:47,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934482827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:47,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373854371] [2024-11-09 05:37:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:47,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:47,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:47,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:37:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:47,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:37:47,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:37:47,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:37:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373854371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:47,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:37:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 05:37:47,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049527959] [2024-11-09 05:37:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:47,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:47,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:47,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:37:47,876 INFO L87 Difference]: Start difference. First operand 3292 states and 4679 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:48,663 INFO L93 Difference]: Finished difference Result 9872 states and 14034 transitions. [2024-11-09 05:37:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:48,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 187 [2024-11-09 05:37:48,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:48,682 INFO L225 Difference]: With dead ends: 9872 [2024-11-09 05:37:48,682 INFO L226 Difference]: Without dead ends: 6581 [2024-11-09 05:37:48,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:37:48,687 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:48,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 227 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:37:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2024-11-09 05:37:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 6581. [2024-11-09 05:37:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6581 states, 6580 states have (on average 1.258966565349544) internal successors, (8284), 6580 states have internal predecessors, (8284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 8284 transitions. [2024-11-09 05:37:48,815 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 8284 transitions. Word has length 187 [2024-11-09 05:37:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:48,816 INFO L471 AbstractCegarLoop]: Abstraction has 6581 states and 8284 transitions. [2024-11-09 05:37:48,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 8284 transitions. [2024-11-09 05:37:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-09 05:37:48,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:48,825 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:48,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:37:49,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:49,026 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:49,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:49,029 INFO L85 PathProgramCache]: Analyzing trace with hash -57238770, now seen corresponding path program 1 times [2024-11-09 05:37:49,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:49,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91036603] [2024-11-09 05:37:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:49,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:49,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91036603] [2024-11-09 05:37:49,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91036603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:49,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:49,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:37:49,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260929011] [2024-11-09 05:37:49,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:49,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:49,275 INFO L87 Difference]: Start difference. First operand 6581 states and 8284 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:50,088 INFO L93 Difference]: Finished difference Result 16307 states and 21037 transitions. [2024-11-09 05:37:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:50,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2024-11-09 05:37:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:50,126 INFO L225 Difference]: With dead ends: 16307 [2024-11-09 05:37:50,126 INFO L226 Difference]: Without dead ends: 9727 [2024-11-09 05:37:50,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:50,134 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:50,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 66 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:37:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9727 states. [2024-11-09 05:37:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9727 to 9727. [2024-11-09 05:37:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9727 states, 9726 states have (on average 1.2157104667900474) internal successors, (11824), 9726 states have internal predecessors, (11824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9727 states to 9727 states and 11824 transitions. [2024-11-09 05:37:50,315 INFO L78 Accepts]: Start accepts. Automaton has 9727 states and 11824 transitions. Word has length 187 [2024-11-09 05:37:50,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:50,315 INFO L471 AbstractCegarLoop]: Abstraction has 9727 states and 11824 transitions. [2024-11-09 05:37:50,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:50,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9727 states and 11824 transitions. [2024-11-09 05:37:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-09 05:37:50,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:50,329 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:50,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:37:50,329 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:50,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash -497818436, now seen corresponding path program 1 times [2024-11-09 05:37:50,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:50,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268898600] [2024-11-09 05:37:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:50,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:50,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268898600] [2024-11-09 05:37:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268898600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:37:50,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:37:50,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:37:50,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299232107] [2024-11-09 05:37:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:37:50,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:37:50,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:50,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:37:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:50,781 INFO L87 Difference]: Start difference. First operand 9727 states and 11824 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:51,471 INFO L93 Difference]: Finished difference Result 25032 states and 30325 transitions. [2024-11-09 05:37:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:37:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2024-11-09 05:37:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:51,502 INFO L225 Difference]: With dead ends: 25032 [2024-11-09 05:37:51,502 INFO L226 Difference]: Without dead ends: 15306 [2024-11-09 05:37:51,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:37:51,512 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 83 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:51,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 45 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:37:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15306 states. [2024-11-09 05:37:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15306 to 13731. [2024-11-09 05:37:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13731 states, 13730 states have (on average 1.2205389657683905) internal successors, (16758), 13730 states have internal predecessors, (16758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13731 states to 13731 states and 16758 transitions. [2024-11-09 05:37:51,748 INFO L78 Accepts]: Start accepts. Automaton has 13731 states and 16758 transitions. Word has length 218 [2024-11-09 05:37:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:51,748 INFO L471 AbstractCegarLoop]: Abstraction has 13731 states and 16758 transitions. [2024-11-09 05:37:51,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:37:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13731 states and 16758 transitions. [2024-11-09 05:37:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-09 05:37:51,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:51,764 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:51,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:37:51,765 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:51,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash 203461959, now seen corresponding path program 1 times [2024-11-09 05:37:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284814439] [2024-11-09 05:37:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:53,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:53,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284814439] [2024-11-09 05:37:53,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284814439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:53,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943757332] [2024-11-09 05:37:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:53,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:53,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:53,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:53,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ec293a-edc1-41ce-a80c-f6ba7d1890b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:37:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:53,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:37:53,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:53,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:37:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:37:54,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943757332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:37:54,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1586962292] [2024-11-09 05:37:54,315 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2024-11-09 05:37:54,315 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:37:54,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:37:54,324 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:37:54,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:38:19,606 WARN L286 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 868 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 05:38:29,490 WARN L286 SmtUtils]: Spent 9.88s on a formula simplification that was a NOOP. DAG size: 868 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 05:39:24,562 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13408 conjunctions. This might take some time... [2024-11-09 05:39:37,424 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 13408 conjunctions. [2024-11-09 05:39:37,532 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13408 conjunctions. This might take some time... [2024-11-09 05:39:49,667 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 13408 conjunctions. [2024-11-09 05:43:36,399 WARN L286 SmtUtils]: Spent 3.77m on a formula simplification that was a NOOP. DAG size: 3750 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 05:47:41,074 WARN L286 SmtUtils]: Spent 4.08m on a formula simplification that was a NOOP. DAG size: 3750 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)