./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:32:05,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:32:05,871 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:32:05,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:32:05,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:32:05,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:32:05,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:32:05,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:32:05,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:32:05,909 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:32:05,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:32:05,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:32:05,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:32:05,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:32:05,910 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:32:05,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:32:05,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:32:05,911 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:32:05,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:32:05,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:32:05,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:32:05,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:32:05,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:32:05,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:32:05,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:32:05,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:32:05,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:32:05,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:32:05,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:32:05,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:32:05,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:32:05,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:32:05,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:32:05,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:32:05,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:32:05,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:32:05,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:32:05,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:32:05,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:32:05,914 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:32:05,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:32:05,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:32:05,914 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 [2024-11-13 13:32:06,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:32:06,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:32:06,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:32:06,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:32:06,217 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:32:06,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-13 13:32:08,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:32:08,446 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:32:08,446 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2024-11-13 13:32:08,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/data/ff0f81b15/486e53b0ed8b46058d6127927e580e64/FLAG633ca94f1 [2024-11-13 13:32:08,478 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/data/ff0f81b15/486e53b0ed8b46058d6127927e580e64 [2024-11-13 13:32:08,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:32:08,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:32:08,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:32:08,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:32:08,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:32:08,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea2b189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08, skipping insertion in model container [2024-11-13 13:32:08,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:32:08,750 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_a1a41050-27d5-4053-877e-1a8e0cc072fd/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2024-11-13 13:32:08,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:32:08,768 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:32:08,817 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_a1a41050-27d5-4053-877e-1a8e0cc072fd/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2024-11-13 13:32:08,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:32:08,833 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:32:08,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08 WrapperNode [2024-11-13 13:32:08,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:32:08,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:32:08,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:32:08,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:32:08,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,878 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 315 [2024-11-13 13:32:08,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:32:08,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:32:08,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:32:08,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:32:08,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,907 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:32:08,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:32:08,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:32:08,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:32:08,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:32:08,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (1/1) ... [2024-11-13 13:32:08,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:32:08,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:08,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:32:08,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:32:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:32:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:32:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:32:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:32:09,090 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:32:09,092 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:32:09,704 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-13 13:32:09,704 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:32:09,720 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:32:09,721 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:32:09,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:09 BoogieIcfgContainer [2024-11-13 13:32:09,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:32:09,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:32:09,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:32:09,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:32:09,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:32:08" (1/3) ... [2024-11-13 13:32:09,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108f964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:09, skipping insertion in model container [2024-11-13 13:32:09,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:08" (2/3) ... [2024-11-13 13:32:09,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108f964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:09, skipping insertion in model container [2024-11-13 13:32:09,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:09" (3/3) ... [2024-11-13 13:32:09,732 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2024-11-13 13:32:09,753 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:32:09,757 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c that has 1 procedures, 86 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:32:09,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:32:09,835 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@715c5ea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:32:09,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:32:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:32:09,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:09,850 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] [2024-11-13 13:32:09,851 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:09,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash -939868314, now seen corresponding path program 1 times [2024-11-13 13:32:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:09,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285972627] [2024-11-13 13:32:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:10,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:10,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285972627] [2024-11-13 13:32:10,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285972627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:32:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073729630] [2024-11-13 13:32:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:10,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:32:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:32:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:32:10,161 INFO L87 Difference]: Start difference. First operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:10,185 INFO L93 Difference]: Finished difference Result 139 states and 233 transitions. [2024-11-13 13:32:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:32:10,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-13 13:32:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:10,195 INFO L225 Difference]: With dead ends: 139 [2024-11-13 13:32:10,195 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 13:32:10,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:32:10,203 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:10,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 13:32:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-13 13:32:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 81 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 138 transitions. [2024-11-13 13:32:10,258 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 138 transitions. Word has length 29 [2024-11-13 13:32:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:10,258 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 138 transitions. [2024-11-13 13:32:10,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 138 transitions. [2024-11-13 13:32:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:32:10,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:10,260 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] [2024-11-13 13:32:10,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:32:10,260 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:10,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1073881820, now seen corresponding path program 1 times [2024-11-13 13:32:10,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:10,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108858130] [2024-11-13 13:32:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:10,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108858130] [2024-11-13 13:32:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108858130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:10,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:32:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589884940] [2024-11-13 13:32:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:10,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:32:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:32:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:32:10,640 INFO L87 Difference]: Start difference. First operand 82 states and 138 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:10,742 INFO L93 Difference]: Finished difference Result 138 states and 226 transitions. [2024-11-13 13:32:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:32:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-13 13:32:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:10,748 INFO L225 Difference]: With dead ends: 138 [2024-11-13 13:32:10,749 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 13:32:10,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:32:10,750 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:10,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 515 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 13:32:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-13 13:32:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-13 13:32:10,757 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 29 [2024-11-13 13:32:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:10,757 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-13 13:32:10,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-13 13:32:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 13:32:10,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:10,759 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] [2024-11-13 13:32:10,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:32:10,759 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:10,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash -84845283, now seen corresponding path program 1 times [2024-11-13 13:32:10,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:10,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859388724] [2024-11-13 13:32:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:10,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:10,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859388724] [2024-11-13 13:32:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859388724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:10,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:10,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805716230] [2024-11-13 13:32:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:10,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:10,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:10,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:10,953 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:10,988 INFO L93 Difference]: Finished difference Result 178 states and 268 transitions. [2024-11-13 13:32:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:10,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-13 13:32:10,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:10,990 INFO L225 Difference]: With dead ends: 178 [2024-11-13 13:32:10,990 INFO L226 Difference]: Without dead ends: 126 [2024-11-13 13:32:10,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:10,991 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 60 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:10,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-13 13:32:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2024-11-13 13:32:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.4796747967479675) internal successors, (182), 123 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2024-11-13 13:32:11,002 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 52 [2024-11-13 13:32:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:11,002 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2024-11-13 13:32:11,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2024-11-13 13:32:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 13:32:11,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:11,004 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] [2024-11-13 13:32:11,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:32:11,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:11,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:11,005 INFO L85 PathProgramCache]: Analyzing trace with hash -979100962, now seen corresponding path program 1 times [2024-11-13 13:32:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:11,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954386501] [2024-11-13 13:32:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954386501] [2024-11-13 13:32:11,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954386501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:11,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:11,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:11,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460727328] [2024-11-13 13:32:11,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:11,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:11,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:11,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:11,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:11,307 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:11,508 INFO L93 Difference]: Finished difference Result 594 states and 942 transitions. [2024-11-13 13:32:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-13 13:32:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:11,512 INFO L225 Difference]: With dead ends: 594 [2024-11-13 13:32:11,512 INFO L226 Difference]: Without dead ends: 500 [2024-11-13 13:32:11,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:32:11,514 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 664 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:11,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 606 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-13 13:32:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 216. [2024-11-13 13:32:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5302325581395348) internal successors, (329), 215 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 329 transitions. [2024-11-13 13:32:11,560 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 329 transitions. Word has length 52 [2024-11-13 13:32:11,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:11,560 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 329 transitions. [2024-11-13 13:32:11,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:11,560 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 329 transitions. [2024-11-13 13:32:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 13:32:11,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:11,562 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] [2024-11-13 13:32:11,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:32:11,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:11,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash -670682120, now seen corresponding path program 1 times [2024-11-13 13:32:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682621590] [2024-11-13 13:32:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:12,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:12,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682621590] [2024-11-13 13:32:12,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682621590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:12,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:12,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:32:12,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046979715] [2024-11-13 13:32:12,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:12,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:32:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:32:12,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:32:12,126 INFO L87 Difference]: Start difference. First operand 216 states and 329 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:12,202 INFO L93 Difference]: Finished difference Result 230 states and 346 transitions. [2024-11-13 13:32:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:32:12,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-13 13:32:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:12,206 INFO L225 Difference]: With dead ends: 230 [2024-11-13 13:32:12,206 INFO L226 Difference]: Without dead ends: 228 [2024-11-13 13:32:12,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:32:12,210 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:12,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 744 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-13 13:32:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-13 13:32:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.502202643171806) internal successors, (341), 227 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 341 transitions. [2024-11-13 13:32:12,234 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 341 transitions. Word has length 53 [2024-11-13 13:32:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:12,237 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 341 transitions. [2024-11-13 13:32:12,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 341 transitions. [2024-11-13 13:32:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 13:32:12,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:12,239 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] [2024-11-13 13:32:12,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:32:12,240 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:12,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash 736269302, now seen corresponding path program 1 times [2024-11-13 13:32:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:12,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298078729] [2024-11-13 13:32:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298078729] [2024-11-13 13:32:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298078729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:12,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682859177] [2024-11-13 13:32:12,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:12,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:12,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:12,425 INFO L87 Difference]: Start difference. First operand 228 states and 341 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:12,465 INFO L93 Difference]: Finished difference Result 594 states and 913 transitions. [2024-11-13 13:32:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-13 13:32:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:12,471 INFO L225 Difference]: With dead ends: 594 [2024-11-13 13:32:12,471 INFO L226 Difference]: Without dead ends: 396 [2024-11-13 13:32:12,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:12,476 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:12,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 190 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-13 13:32:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 390. [2024-11-13 13:32:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5141388174807198) internal successors, (589), 389 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 589 transitions. [2024-11-13 13:32:12,527 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 589 transitions. Word has length 54 [2024-11-13 13:32:12,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:12,527 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 589 transitions. [2024-11-13 13:32:12,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,527 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 589 transitions. [2024-11-13 13:32:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 13:32:12,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:12,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:12,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:32:12,533 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:12,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1485287663, now seen corresponding path program 1 times [2024-11-13 13:32:12,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:12,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838921026] [2024-11-13 13:32:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:12,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:12,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838921026] [2024-11-13 13:32:12,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838921026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:12,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:12,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774883885] [2024-11-13 13:32:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:12,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:12,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:12,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:12,633 INFO L87 Difference]: Start difference. First operand 390 states and 589 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:12,677 INFO L93 Difference]: Finished difference Result 1046 states and 1595 transitions. [2024-11-13 13:32:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:12,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 13:32:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:12,680 INFO L225 Difference]: With dead ends: 1046 [2024-11-13 13:32:12,680 INFO L226 Difference]: Without dead ends: 686 [2024-11-13 13:32:12,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:12,686 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 64 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:12,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-13 13:32:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 684. [2024-11-13 13:32:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.5036603221083455) internal successors, (1027), 683 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1027 transitions. [2024-11-13 13:32:12,720 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1027 transitions. Word has length 55 [2024-11-13 13:32:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:12,721 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1027 transitions. [2024-11-13 13:32:12,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1027 transitions. [2024-11-13 13:32:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 13:32:12,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:12,723 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:12,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:32:12,723 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:12,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:12,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1452509681, now seen corresponding path program 1 times [2024-11-13 13:32:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:12,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473236113] [2024-11-13 13:32:12,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:12,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:12,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:12,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473236113] [2024-11-13 13:32:12,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473236113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:12,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:12,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:12,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920922154] [2024-11-13 13:32:12,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:12,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:12,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:12,820 INFO L87 Difference]: Start difference. First operand 684 states and 1027 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:12,872 INFO L93 Difference]: Finished difference Result 1864 states and 2797 transitions. [2024-11-13 13:32:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 13:32:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:12,879 INFO L225 Difference]: With dead ends: 1864 [2024-11-13 13:32:12,880 INFO L226 Difference]: Without dead ends: 1210 [2024-11-13 13:32:12,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:12,882 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 68 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:12,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 246 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-13 13:32:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1208. [2024-11-13 13:32:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1207 states have (on average 1.4772162386081193) internal successors, (1783), 1207 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1783 transitions. [2024-11-13 13:32:12,945 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1783 transitions. Word has length 55 [2024-11-13 13:32:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:12,946 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1783 transitions. [2024-11-13 13:32:12,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1783 transitions. [2024-11-13 13:32:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 13:32:12,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:12,947 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] [2024-11-13 13:32:12,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:32:12,948 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:12,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash -112011344, now seen corresponding path program 1 times [2024-11-13 13:32:12,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:12,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069168900] [2024-11-13 13:32:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:12,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:13,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:13,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069168900] [2024-11-13 13:32:13,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069168900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:13,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:13,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:13,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737543] [2024-11-13 13:32:13,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:13,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:13,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:13,051 INFO L87 Difference]: Start difference. First operand 1208 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:13,115 INFO L93 Difference]: Finished difference Result 2367 states and 3517 transitions. [2024-11-13 13:32:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:13,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-13 13:32:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:13,124 INFO L225 Difference]: With dead ends: 2367 [2024-11-13 13:32:13,124 INFO L226 Difference]: Without dead ends: 1708 [2024-11-13 13:32:13,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:13,128 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:13,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 255 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2024-11-13 13:32:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1706. [2024-11-13 13:32:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 1.4645161290322581) internal successors, (2497), 1705 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2497 transitions. [2024-11-13 13:32:13,202 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2497 transitions. Word has length 56 [2024-11-13 13:32:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:13,202 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 2497 transitions. [2024-11-13 13:32:13,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2497 transitions. [2024-11-13 13:32:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:32:13,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:13,206 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:13,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:32:13,207 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:13,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1377420220, now seen corresponding path program 1 times [2024-11-13 13:32:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:13,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524098565] [2024-11-13 13:32:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:32:13,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524098565] [2024-11-13 13:32:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524098565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:13,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:13,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917664462] [2024-11-13 13:32:13,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:13,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:13,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:13,451 INFO L87 Difference]: Start difference. First operand 1706 states and 2497 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:13,677 INFO L93 Difference]: Finished difference Result 4812 states and 7146 transitions. [2024-11-13 13:32:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:13,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 78 [2024-11-13 13:32:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:13,694 INFO L225 Difference]: With dead ends: 4812 [2024-11-13 13:32:13,694 INFO L226 Difference]: Without dead ends: 3962 [2024-11-13 13:32:13,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:32:13,698 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 556 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:13,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 599 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2024-11-13 13:32:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 2530. [2024-11-13 13:32:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2529 states have (on average 1.4665875840253064) internal successors, (3709), 2529 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3709 transitions. [2024-11-13 13:32:13,820 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3709 transitions. Word has length 78 [2024-11-13 13:32:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:13,821 INFO L471 AbstractCegarLoop]: Abstraction has 2530 states and 3709 transitions. [2024-11-13 13:32:13,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3709 transitions. [2024-11-13 13:32:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:32:13,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:13,824 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:13,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:32:13,824 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:13,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:13,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2011113827, now seen corresponding path program 1 times [2024-11-13 13:32:13,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:13,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210923039] [2024-11-13 13:32:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:13,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:32:14,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210923039] [2024-11-13 13:32:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210923039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:14,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590607407] [2024-11-13 13:32:14,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:14,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:14,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:14,037 INFO L87 Difference]: Start difference. First operand 2530 states and 3709 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:14,265 INFO L93 Difference]: Finished difference Result 5636 states and 8358 transitions. [2024-11-13 13:32:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:14,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 78 [2024-11-13 13:32:14,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:14,285 INFO L225 Difference]: With dead ends: 5636 [2024-11-13 13:32:14,285 INFO L226 Difference]: Without dead ends: 4786 [2024-11-13 13:32:14,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:32:14,289 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 498 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:14,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 652 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2024-11-13 13:32:14,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 3354. [2024-11-13 13:32:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 1.4676409185803758) internal successors, (4921), 3353 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4921 transitions. [2024-11-13 13:32:14,467 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4921 transitions. Word has length 78 [2024-11-13 13:32:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:14,467 INFO L471 AbstractCegarLoop]: Abstraction has 3354 states and 4921 transitions. [2024-11-13 13:32:14,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4921 transitions. [2024-11-13 13:32:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:32:14,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:14,470 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:14,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:32:14,470 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:14,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:14,471 INFO L85 PathProgramCache]: Analyzing trace with hash 653943875, now seen corresponding path program 1 times [2024-11-13 13:32:14,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:14,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274573086] [2024-11-13 13:32:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:14,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:32:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274573086] [2024-11-13 13:32:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274573086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:14,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508738194] [2024-11-13 13:32:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:14,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:14,642 INFO L87 Difference]: Start difference. First operand 3354 states and 4921 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:14,880 INFO L93 Difference]: Finished difference Result 6460 states and 9570 transitions. [2024-11-13 13:32:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:14,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-13 13:32:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:14,900 INFO L225 Difference]: With dead ends: 6460 [2024-11-13 13:32:14,900 INFO L226 Difference]: Without dead ends: 5610 [2024-11-13 13:32:14,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:32:14,902 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 540 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:14,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 632 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2024-11-13 13:32:15,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 4178. [2024-11-13 13:32:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.4682786689011251) internal successors, (6133), 4177 states have internal predecessors, (6133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6133 transitions. [2024-11-13 13:32:15,074 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6133 transitions. Word has length 78 [2024-11-13 13:32:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:15,074 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 6133 transitions. [2024-11-13 13:32:15,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6133 transitions. [2024-11-13 13:32:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 13:32:15,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:15,079 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:15,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:32:15,079 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:15,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash -663621508, now seen corresponding path program 1 times [2024-11-13 13:32:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:15,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590135230] [2024-11-13 13:32:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:15,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:15,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590135230] [2024-11-13 13:32:15,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590135230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:15,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:15,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:15,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130816055] [2024-11-13 13:32:15,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:15,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:15,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:15,247 INFO L87 Difference]: Start difference. First operand 4178 states and 6133 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:15,388 INFO L93 Difference]: Finished difference Result 8326 states and 12235 transitions. [2024-11-13 13:32:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-11-13 13:32:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:15,404 INFO L225 Difference]: With dead ends: 8326 [2024-11-13 13:32:15,404 INFO L226 Difference]: Without dead ends: 4180 [2024-11-13 13:32:15,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:15,409 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 55 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:15,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 246 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2024-11-13 13:32:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4178. [2024-11-13 13:32:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.453914292554465) internal successors, (6073), 4177 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6073 transitions. [2024-11-13 13:32:15,586 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6073 transitions. Word has length 79 [2024-11-13 13:32:15,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:15,587 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 6073 transitions. [2024-11-13 13:32:15,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6073 transitions. [2024-11-13 13:32:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 13:32:15,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:15,589 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:15,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:32:15,589 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:15,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash 735883259, now seen corresponding path program 1 times [2024-11-13 13:32:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:15,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180482710] [2024-11-13 13:32:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:15,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:15,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180482710] [2024-11-13 13:32:15,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180482710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:15,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:15,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491704599] [2024-11-13 13:32:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:15,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:15,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:15,730 INFO L87 Difference]: Start difference. First operand 4178 states and 6073 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:15,804 INFO L93 Difference]: Finished difference Result 6254 states and 9095 transitions. [2024-11-13 13:32:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:15,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-11-13 13:32:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:15,812 INFO L225 Difference]: With dead ends: 6254 [2024-11-13 13:32:15,812 INFO L226 Difference]: Without dead ends: 2108 [2024-11-13 13:32:15,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:15,820 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 49 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:15,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 227 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2024-11-13 13:32:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2106. [2024-11-13 13:32:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 1.436104513064133) internal successors, (3023), 2105 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3023 transitions. [2024-11-13 13:32:15,894 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3023 transitions. Word has length 79 [2024-11-13 13:32:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:15,894 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 3023 transitions. [2024-11-13 13:32:15,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3023 transitions. [2024-11-13 13:32:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 13:32:15,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:15,896 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:15,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:32:15,896 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:15,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -749140230, now seen corresponding path program 1 times [2024-11-13 13:32:15,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553324332] [2024-11-13 13:32:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:18,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:18,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553324332] [2024-11-13 13:32:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553324332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753049481] [2024-11-13 13:32:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:18,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:18,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:18,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:18,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:32:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:18,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:32:18,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:19,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753049481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:20,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 28 [2024-11-13 13:32:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277906113] [2024-11-13 13:32:20,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:20,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:32:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:32:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:32:20,779 INFO L87 Difference]: Start difference. First operand 2106 states and 3023 transitions. Second operand has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:40,291 INFO L93 Difference]: Finished difference Result 28942 states and 41152 transitions. [2024-11-13 13:32:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2024-11-13 13:32:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 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 79 [2024-11-13 13:32:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:40,351 INFO L225 Difference]: With dead ends: 28942 [2024-11-13 13:32:40,351 INFO L226 Difference]: Without dead ends: 26868 [2024-11-13 13:32:40,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18355 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=6567, Invalid=38589, Unknown=0, NotChecked=0, Total=45156 [2024-11-13 13:32:40,368 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 8396 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8396 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:40,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8396 Valid, 1569 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 13:32:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26868 states. [2024-11-13 13:32:41,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26868 to 20546. [2024-11-13 13:32:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20546 states, 20545 states have (on average 1.3981017279143344) internal successors, (28724), 20545 states have internal predecessors, (28724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20546 states to 20546 states and 28724 transitions. [2024-11-13 13:32:41,364 INFO L78 Accepts]: Start accepts. Automaton has 20546 states and 28724 transitions. Word has length 79 [2024-11-13 13:32:41,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:41,364 INFO L471 AbstractCegarLoop]: Abstraction has 20546 states and 28724 transitions. [2024-11-13 13:32:41,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 20546 states and 28724 transitions. [2024-11-13 13:32:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:32:41,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:41,370 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:41,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:32:41,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:41,572 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:41,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1346752506, now seen corresponding path program 1 times [2024-11-13 13:32:41,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:41,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423035873] [2024-11-13 13:32:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:32:41,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:41,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423035873] [2024-11-13 13:32:41,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423035873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:41,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:41,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:41,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232270724] [2024-11-13 13:32:41,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:41,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:41,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:41,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:41,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:41,736 INFO L87 Difference]: Start difference. First operand 20546 states and 28724 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:42,652 INFO L93 Difference]: Finished difference Result 37475 states and 52800 transitions. [2024-11-13 13:32:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 80 [2024-11-13 13:32:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:42,731 INFO L225 Difference]: With dead ends: 37475 [2024-11-13 13:32:42,731 INFO L226 Difference]: Without dead ends: 33199 [2024-11-13 13:32:42,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:32:42,740 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 462 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:42,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 646 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:42,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33199 states. [2024-11-13 13:32:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33199 to 24630. [2024-11-13 13:32:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24630 states, 24629 states have (on average 1.3970928580129116) internal successors, (34409), 24629 states have internal predecessors, (34409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24630 states to 24630 states and 34409 transitions. [2024-11-13 13:32:44,025 INFO L78 Accepts]: Start accepts. Automaton has 24630 states and 34409 transitions. Word has length 80 [2024-11-13 13:32:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:44,026 INFO L471 AbstractCegarLoop]: Abstraction has 24630 states and 34409 transitions. [2024-11-13 13:32:44,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 24630 states and 34409 transitions. [2024-11-13 13:32:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 13:32:44,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:44,027 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:32:44,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:32:44,028 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:44,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1429282586, now seen corresponding path program 1 times [2024-11-13 13:32:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119324223] [2024-11-13 13:32:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:45,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119324223] [2024-11-13 13:32:45,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119324223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822425903] [2024-11-13 13:32:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:45,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:45,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:45,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:45,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:32:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:45,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:32:45,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:46,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:48,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822425903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:48,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:48,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 35 [2024-11-13 13:32:48,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563993831] [2024-11-13 13:32:48,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:48,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 13:32:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:48,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 13:32:48,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 13:32:48,970 INFO L87 Difference]: Start difference. First operand 24630 states and 34409 transitions. Second operand has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:20,756 INFO L93 Difference]: Finished difference Result 237968 states and 331786 transitions. [2024-11-13 13:33:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 396 states. [2024-11-13 13:33:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 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 83 [2024-11-13 13:33:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:21,246 INFO L225 Difference]: With dead ends: 237968 [2024-11-13 13:33:21,246 INFO L226 Difference]: Without dead ends: 213372 [2024-11-13 13:33:21,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82190 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=20054, Invalid=163558, Unknown=0, NotChecked=0, Total=183612 [2024-11-13 13:33:21,304 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 10901 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 4580 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10901 SdHoareTripleChecker+Valid, 3716 SdHoareTripleChecker+Invalid, 4864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 4580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:21,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10901 Valid, 3716 Invalid, 4864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 4580 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-13 13:33:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213372 states. [2024-11-13 13:33:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213372 to 92039. [2024-11-13 13:33:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92039 states, 92038 states have (on average 1.3789630370064538) internal successors, (126917), 92038 states have internal predecessors, (126917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92039 states to 92039 states and 126917 transitions. [2024-11-13 13:33:25,383 INFO L78 Accepts]: Start accepts. Automaton has 92039 states and 126917 transitions. Word has length 83 [2024-11-13 13:33:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:25,383 INFO L471 AbstractCegarLoop]: Abstraction has 92039 states and 126917 transitions. [2024-11-13 13:33:25,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 92039 states and 126917 transitions. [2024-11-13 13:33:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 13:33:25,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:25,387 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:33:25,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:33:25,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:33:25,591 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:25,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1403980252, now seen corresponding path program 1 times [2024-11-13 13:33:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:25,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351847451] [2024-11-13 13:33:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:25,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:26,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351847451] [2024-11-13 13:33:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351847451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:33:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627908683] [2024-11-13 13:33:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:26,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:26,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:33:26,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:33:26,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a41050-27d5-4053-877e-1a8e0cc072fd/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:33:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:26,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:33:26,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:33:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:27,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:33:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627908683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:33:27,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:33:27,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-13 13:33:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092566174] [2024-11-13 13:33:27,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:33:27,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:33:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:33:27,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:33:27,974 INFO L87 Difference]: Start difference. First operand 92039 states and 126917 transitions. Second operand has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 20 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:34,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:34,722 INFO L93 Difference]: Finished difference Result 344585 states and 477843 transitions. [2024-11-13 13:33:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:33:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 20 states have internal predecessors, (184), 0 states have call successors, (0), 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 83 [2024-11-13 13:33:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:35,167 INFO L225 Difference]: With dead ends: 344585 [2024-11-13 13:33:35,168 INFO L226 Difference]: Without dead ends: 253370 [2024-11-13 13:33:35,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:33:35,301 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 908 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:35,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 892 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:33:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253370 states.