./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/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_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/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_fe563597-d350-410a-92e7-35662d66e6fb/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 dcec1ccd806a412efdabd457261f7c023005f550a4699f0a865a5aa2d5f9f4d9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:31:56,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:31:56,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:31:56,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:31:56,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:31:56,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:31:56,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:31:56,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:31:56,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:31:56,892 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:31:56,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:31:56,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:31:56,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:31:56,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:31:56,894 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:31:56,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:31:56,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:31:56,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:31:56,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:31:56,897 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:31:56,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:31:56,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:31:56,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:31:56,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:31:56,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:31:56,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:31:56,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:31:56,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:31:56,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:31:56,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:31:56,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:31:56,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:31:56,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:31:56,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:31:56,901 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_fe563597-d350-410a-92e7-35662d66e6fb/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 -> dcec1ccd806a412efdabd457261f7c023005f550a4699f0a865a5aa2d5f9f4d9 [2024-11-13 13:31:57,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:31:57,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:31:57,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:31:57,255 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:31:57,255 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:31:57,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-13 13:31:59,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:31:59,677 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:31:59,678 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-13 13:31:59,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/data/a87c060a6/67ff0171e8e14fdfbd4650c458bed7a0/FLAG79928657b [2024-11-13 13:31:59,727 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/data/a87c060a6/67ff0171e8e14fdfbd4650c458bed7a0 [2024-11-13 13:31:59,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:31:59,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:31:59,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:31:59,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:31:59,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:31:59,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:59" (1/1) ... [2024-11-13 13:31:59,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c3bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:59, skipping insertion in model container [2024-11-13 13:31:59,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:59" (1/1) ... [2024-11-13 13:31:59,773 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:32:00,049 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_fe563597-d350-410a-92e7-35662d66e6fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2024-11-13 13:32:00,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:32:00,103 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:32:00,155 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_fe563597-d350-410a-92e7-35662d66e6fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2024-11-13 13:32:00,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:32:00,204 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:32:00,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00 WrapperNode [2024-11-13 13:32:00,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:32:00,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:32:00,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:32:00,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:32:00,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,277 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 465 [2024-11-13 13:32:00,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:32:00,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:32:00,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:32:00,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:32:00,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,339 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 13:32:00,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:32:00,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:32:00,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:32:00,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:32:00,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (1/1) ... [2024-11-13 13:32:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:32:00,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:00,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:32:00,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:32:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:32:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:32:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:32:00,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:32:00,618 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:32:00,620 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:32:01,323 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-13 13:32:01,324 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:32:01,345 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:32:01,348 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 13:32:01,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:01 BoogieIcfgContainer [2024-11-13 13:32:01,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:32:01,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:32:01,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:32:01,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:32:01,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:31:59" (1/3) ... [2024-11-13 13:32:01,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e74b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:01, skipping insertion in model container [2024-11-13 13:32:01,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:00" (2/3) ... [2024-11-13 13:32:01,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e74b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:01, skipping insertion in model container [2024-11-13 13:32:01,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:01" (3/3) ... [2024-11-13 13:32:01,366 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-13 13:32:01,386 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:32:01,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 112 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 13:32:01,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:32:01,495 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;@215776ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:32:01,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:32:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 110 states have (on average 1.6818181818181819) internal successors, (185), 111 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 13:32:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 13:32:01,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:01,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:01,518 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:01,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2117585175, now seen corresponding path program 1 times [2024-11-13 13:32:01,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:01,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785588914] [2024-11-13 13:32:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:01,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:02,116 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 13:32:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785588914] [2024-11-13 13:32:02,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785588914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:02,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:02,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:02,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294079731] [2024-11-13 13:32:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:02,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:02,147 INFO L87 Difference]: Start difference. First operand has 112 states, 110 states have (on average 1.6818181818181819) internal successors, (185), 111 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:02,247 INFO L93 Difference]: Finished difference Result 266 states and 425 transitions. [2024-11-13 13:32:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:02,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-13 13:32:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:02,269 INFO L225 Difference]: With dead ends: 266 [2024-11-13 13:32:02,269 INFO L226 Difference]: Without dead ends: 175 [2024-11-13 13:32:02,274 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 13:32:02,279 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 130 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:02,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 384 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-13 13:32:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2024-11-13 13:32:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.505813953488372) internal successors, (259), 172 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 13:32:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 259 transitions. [2024-11-13 13:32:02,353 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 259 transitions. Word has length 49 [2024-11-13 13:32:02,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:02,355 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 259 transitions. [2024-11-13 13:32:02,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 259 transitions. [2024-11-13 13:32:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 13:32:02,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:02,359 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] [2024-11-13 13:32:02,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:32:02,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:02,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1419109229, now seen corresponding path program 1 times [2024-11-13 13:32:02,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:02,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5531066] [2024-11-13 13:32:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:02,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:02,598 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 13:32:02,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:02,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5531066] [2024-11-13 13:32:02,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5531066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:02,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:02,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:02,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780996925] [2024-11-13 13:32:02,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:02,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:02,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:02,602 INFO L87 Difference]: Start difference. First operand 173 states and 259 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 13:32:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:02,656 INFO L93 Difference]: Finished difference Result 433 states and 671 transitions. [2024-11-13 13:32:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-13 13:32:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:02,662 INFO L225 Difference]: With dead ends: 433 [2024-11-13 13:32:02,662 INFO L226 Difference]: Without dead ends: 287 [2024-11-13 13:32:02,663 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 13:32:02,664 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 108 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 329 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 13:32:02,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 329 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-13 13:32:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2024-11-13 13:32:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.5352112676056338) internal successors, (436), 284 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 13:32:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 436 transitions. [2024-11-13 13:32:02,688 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 436 transitions. Word has length 50 [2024-11-13 13:32:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:02,689 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 436 transitions. [2024-11-13 13:32:02,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 13:32:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 436 transitions. [2024-11-13 13:32:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 13:32:02,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:02,691 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] [2024-11-13 13:32:02,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:32:02,691 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:02,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1570665396, now seen corresponding path program 1 times [2024-11-13 13:32:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:02,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730866644] [2024-11-13 13:32:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:02,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:02,916 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 13:32:02,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:02,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730866644] [2024-11-13 13:32:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730866644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:02,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:02,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168342281] [2024-11-13 13:32:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:02,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:02,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:02,918 INFO L87 Difference]: Start difference. First operand 285 states and 436 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 13:32:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:02,958 INFO L93 Difference]: Finished difference Result 737 states and 1150 transitions. [2024-11-13 13:32:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-13 13:32:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:02,962 INFO L225 Difference]: With dead ends: 737 [2024-11-13 13:32:02,963 INFO L226 Difference]: Without dead ends: 479 [2024-11-13 13:32:02,964 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 13:32:02,965 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 103 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 314 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 13:32:02,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-13 13:32:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2024-11-13 13:32:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.546218487394958) internal successors, (736), 476 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 13:32:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 736 transitions. [2024-11-13 13:32:03,032 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 736 transitions. Word has length 51 [2024-11-13 13:32:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:03,033 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 736 transitions. [2024-11-13 13:32:03,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 13:32:03,037 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 736 transitions. [2024-11-13 13:32:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 13:32:03,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:03,038 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 13:32:03,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:32:03,039 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:03,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:03,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1205622842, now seen corresponding path program 1 times [2024-11-13 13:32:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:03,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176732807] [2024-11-13 13:32:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:03,320 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 13:32:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176732807] [2024-11-13 13:32:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176732807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:03,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:03,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737474334] [2024-11-13 13:32:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:03,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:03,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:03,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:03,326 INFO L87 Difference]: Start difference. First operand 477 states and 736 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 13:32:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:03,569 INFO L93 Difference]: Finished difference Result 2727 states and 4281 transitions. [2024-11-13 13:32:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:03,570 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 13:32:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:03,585 INFO L225 Difference]: With dead ends: 2727 [2024-11-13 13:32:03,585 INFO L226 Difference]: Without dead ends: 2277 [2024-11-13 13:32:03,589 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 13:32:03,590 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 1016 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:03,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1218 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:03,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2024-11-13 13:32:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 925. [2024-11-13 13:32:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.5454545454545454) internal successors, (1428), 924 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states 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 13:32:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1428 transitions. [2024-11-13 13:32:03,683 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1428 transitions. Word has length 52 [2024-11-13 13:32:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:03,683 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1428 transitions. [2024-11-13 13:32:03,684 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 13:32:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1428 transitions. [2024-11-13 13:32:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 13:32:03,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:03,689 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 13:32:03,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:32:03,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:03,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1299853839, now seen corresponding path program 1 times [2024-11-13 13:32:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:03,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145286987] [2024-11-13 13:32:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:03,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:04,078 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 13:32:04,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145286987] [2024-11-13 13:32:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145286987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:04,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524465139] [2024-11-13 13:32:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:04,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:04,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:04,082 INFO L87 Difference]: Start difference. First operand 925 states and 1428 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 13:32:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:04,260 INFO L93 Difference]: Finished difference Result 4029 states and 6232 transitions. [2024-11-13 13:32:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:04,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 13:32:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:04,276 INFO L225 Difference]: With dead ends: 4029 [2024-11-13 13:32:04,276 INFO L226 Difference]: Without dead ends: 3131 [2024-11-13 13:32:04,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:04,281 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 425 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:04,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 743 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2024-11-13 13:32:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3125. [2024-11-13 13:32:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 3124 states have (on average 1.5403329065300897) internal successors, (4812), 3124 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states 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 13:32:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4812 transitions. [2024-11-13 13:32:04,391 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4812 transitions. Word has length 53 [2024-11-13 13:32:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:04,391 INFO L471 AbstractCegarLoop]: Abstraction has 3125 states and 4812 transitions. [2024-11-13 13:32:04,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 13:32:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4812 transitions. [2024-11-13 13:32:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 13:32:04,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:04,399 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 13:32:04,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:32:04,400 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:04,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1774851107, now seen corresponding path program 1 times [2024-11-13 13:32:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:04,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156582974] [2024-11-13 13:32:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:04,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:04,539 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 13:32:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:04,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156582974] [2024-11-13 13:32:04,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156582974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:04,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:04,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:04,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313907420] [2024-11-13 13:32:04,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:04,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:04,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:04,542 INFO L87 Difference]: Start difference. First operand 3125 states and 4812 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 13:32:04,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:04,622 INFO L93 Difference]: Finished difference Result 8249 states and 12654 transitions. [2024-11-13 13:32:04,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:04,623 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 13:32:04,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:04,644 INFO L225 Difference]: With dead ends: 8249 [2024-11-13 13:32:04,645 INFO L226 Difference]: Without dead ends: 5151 [2024-11-13 13:32:04,649 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 13:32:04,650 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 115 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 369 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 13:32:04,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 369 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2024-11-13 13:32:04,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 5149. [2024-11-13 13:32:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 1.5159285159285159) internal successors, (7804), 5148 states have internal predecessors, (7804), 0 states have call successors, (0), 0 states 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 13:32:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 7804 transitions. [2024-11-13 13:32:04,819 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 7804 transitions. Word has length 54 [2024-11-13 13:32:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:04,819 INFO L471 AbstractCegarLoop]: Abstraction has 5149 states and 7804 transitions. [2024-11-13 13:32:04,819 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 13:32:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 7804 transitions. [2024-11-13 13:32:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 13:32:04,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:04,820 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 13:32:04,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:32:04,821 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:04,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash -850826877, now seen corresponding path program 1 times [2024-11-13 13:32:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216634681] [2024-11-13 13:32:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:05,416 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 13:32:05,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216634681] [2024-11-13 13:32:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216634681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:32:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305848552] [2024-11-13 13:32:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:05,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:32:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:32:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:32:05,422 INFO L87 Difference]: Start difference. First operand 5149 states and 7804 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 13:32:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:05,513 INFO L93 Difference]: Finished difference Result 5407 states and 8189 transitions. [2024-11-13 13:32:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:32:05,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 13:32:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:05,537 INFO L225 Difference]: With dead ends: 5407 [2024-11-13 13:32:05,537 INFO L226 Difference]: Without dead ends: 5405 [2024-11-13 13:32:05,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:32:05,543 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:05,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 606 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2024-11-13 13:32:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5405. [2024-11-13 13:32:05,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5404 states have (on average 1.4914877868245744) internal successors, (8060), 5404 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 13:32:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 8060 transitions. [2024-11-13 13:32:05,715 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 8060 transitions. Word has length 55 [2024-11-13 13:32:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:05,716 INFO L471 AbstractCegarLoop]: Abstraction has 5405 states and 8060 transitions. [2024-11-13 13:32:05,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 13:32:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 8060 transitions. [2024-11-13 13:32:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 13:32:05,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:05,718 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 13:32:05,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:32:05,718 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:05,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash -595256360, now seen corresponding path program 1 times [2024-11-13 13:32:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:05,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074142227] [2024-11-13 13:32:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:05,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:05,864 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 13:32:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074142227] [2024-11-13 13:32:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074142227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:05,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717311574] [2024-11-13 13:32:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:05,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:05,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:05,868 INFO L87 Difference]: Start difference. First operand 5405 states and 8060 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 13:32:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:05,977 INFO L93 Difference]: Finished difference Result 13259 states and 19788 transitions. [2024-11-13 13:32:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:05,977 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 13:32:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:06,018 INFO L225 Difference]: With dead ends: 13259 [2024-11-13 13:32:06,018 INFO L226 Difference]: Without dead ends: 7881 [2024-11-13 13:32:06,027 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 13:32:06,028 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 92 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 281 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 13:32:06,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 281 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2024-11-13 13:32:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7823. [2024-11-13 13:32:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7822 states have (on average 1.4812068524673996) internal successors, (11586), 7822 states have internal predecessors, (11586), 0 states have call successors, (0), 0 states 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 13:32:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 11586 transitions. [2024-11-13 13:32:06,286 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 11586 transitions. Word has length 56 [2024-11-13 13:32:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:06,287 INFO L471 AbstractCegarLoop]: Abstraction has 7823 states and 11586 transitions. [2024-11-13 13:32:06,287 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 13:32:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 11586 transitions. [2024-11-13 13:32:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 13:32:06,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:06,298 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] [2024-11-13 13:32:06,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:32:06,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:06,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash -264442661, now seen corresponding path program 1 times [2024-11-13 13:32:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73391595] [2024-11-13 13:32:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:07,061 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 13:32:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73391595] [2024-11-13 13:32:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73391595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396646286] [2024-11-13 13:32:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:07,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:07,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:07,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:07,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:32:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:07,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:32:07,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:08,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396646286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:09,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:09,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-13 13:32:09,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851358568] [2024-11-13 13:32:09,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:09,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:32:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:32:09,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:32:09,347 INFO L87 Difference]: Start difference. First operand 7823 states and 11586 transitions. Second operand has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 21 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 13:32:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:25,072 INFO L93 Difference]: Finished difference Result 102686 states and 151592 transitions. [2024-11-13 13:32:25,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-11-13 13:32:25,073 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 21 states have internal predecessors, (228), 0 states have call successors, (0), 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 13:32:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:25,411 INFO L225 Difference]: With dead ends: 102686 [2024-11-13 13:32:25,412 INFO L226 Difference]: Without dead ends: 94892 [2024-11-13 13:32:25,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12160 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=4623, Invalid=24789, Unknown=0, NotChecked=0, Total=29412 [2024-11-13 13:32:25,446 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 16600 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 3742 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16600 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:25,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16600 Valid, 3700 Invalid, 3964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [222 Valid, 3742 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-13 13:32:25,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94892 states. [2024-11-13 13:32:27,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94892 to 66534. [2024-11-13 13:32:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66534 states, 66533 states have (on average 1.44690604662348) internal successors, (96267), 66533 states have internal predecessors, (96267), 0 states have call successors, (0), 0 states 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 13:32:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66534 states to 66534 states and 96267 transitions. [2024-11-13 13:32:27,565 INFO L78 Accepts]: Start accepts. Automaton has 66534 states and 96267 transitions. Word has length 79 [2024-11-13 13:32:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:27,565 INFO L471 AbstractCegarLoop]: Abstraction has 66534 states and 96267 transitions. [2024-11-13 13:32:27,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 21 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 13:32:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 66534 states and 96267 transitions. [2024-11-13 13:32:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:32:27,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:27,686 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:27,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:32:27,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe563597-d350-410a-92e7-35662d66e6fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:27,891 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:27,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:27,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1122786804, now seen corresponding path program 1 times [2024-11-13 13:32:27,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:27,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926221211] [2024-11-13 13:32:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:27,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926221211] [2024-11-13 13:32:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926221211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:28,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879551682] [2024-11-13 13:32:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:28,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:28,024 INFO L87 Difference]: Start difference. First operand 66534 states and 96267 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:28,720 INFO L93 Difference]: Finished difference Result 157742 states and 227710 transitions. [2024-11-13 13:32:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:28,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:32:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:29,150 INFO L225 Difference]: With dead ends: 157742 [2024-11-13 13:32:29,151 INFO L226 Difference]: Without dead ends: 104273 [2024-11-13 13:32:29,193 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 13:32:29,193 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 91 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:29,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 344 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104273 states. [2024-11-13 13:32:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104273 to 100411. [2024-11-13 13:32:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100411 states, 100410 states have (on average 1.430923214819241) internal successors, (143679), 100410 states have internal predecessors, (143679), 0 states have call successors, (0), 0 states 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 13:32:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100411 states to 100411 states and 143679 transitions. [2024-11-13 13:32:31,543 INFO L78 Accepts]: Start accepts. Automaton has 100411 states and 143679 transitions. Word has length 80 [2024-11-13 13:32:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:31,543 INFO L471 AbstractCegarLoop]: Abstraction has 100411 states and 143679 transitions. [2024-11-13 13:32:31,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 100411 states and 143679 transitions. [2024-11-13 13:32:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:32:31,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:31,552 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:31,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:32:31,553 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:31,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash 463975674, now seen corresponding path program 1 times [2024-11-13 13:32:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683691459] [2024-11-13 13:32:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:31,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:31,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683691459] [2024-11-13 13:32:31,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683691459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:31,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:31,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:31,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194198697] [2024-11-13 13:32:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:31,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:31,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:31,686 INFO L87 Difference]: Start difference. First operand 100411 states and 143679 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:32,537 INFO L93 Difference]: Finished difference Result 211629 states and 301341 transitions. [2024-11-13 13:32:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:32,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:32:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:32,801 INFO L225 Difference]: With dead ends: 211629 [2024-11-13 13:32:32,801 INFO L226 Difference]: Without dead ends: 142710 [2024-11-13 13:32:33,313 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 13:32:33,314 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 92 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:33,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 336 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142710 states. [2024-11-13 13:32:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142710 to 136496. [2024-11-13 13:32:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136496 states, 136495 states have (on average 1.4111945492508884) internal successors, (192621), 136495 states have internal predecessors, (192621), 0 states have call successors, (0), 0 states 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 13:32:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136496 states to 136496 states and 192621 transitions. [2024-11-13 13:32:35,393 INFO L78 Accepts]: Start accepts. Automaton has 136496 states and 192621 transitions. Word has length 80 [2024-11-13 13:32:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:35,393 INFO L471 AbstractCegarLoop]: Abstraction has 136496 states and 192621 transitions. [2024-11-13 13:32:35,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 136496 states and 192621 transitions. [2024-11-13 13:32:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:32:35,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:35,401 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:35,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:32:35,402 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:35,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1412707103, now seen corresponding path program 1 times [2024-11-13 13:32:35,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295226388] [2024-11-13 13:32:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:35,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295226388] [2024-11-13 13:32:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295226388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:35,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:35,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651854005] [2024-11-13 13:32:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:35,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:35,506 INFO L87 Difference]: Start difference. First operand 136496 states and 192621 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:36,557 INFO L93 Difference]: Finished difference Result 224249 states and 314445 transitions. [2024-11-13 13:32:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:36,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:32:36,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:36,747 INFO L225 Difference]: With dead ends: 224249 [2024-11-13 13:32:36,748 INFO L226 Difference]: Without dead ends: 142165 [2024-11-13 13:32:36,811 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 13:32:36,812 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 93 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:36,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 355 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142165 states. [2024-11-13 13:32:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142165 to 134884. [2024-11-13 13:32:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134884 states, 134883 states have (on average 1.3899972568818901) internal successors, (187487), 134883 states have internal predecessors, (187487), 0 states have call successors, (0), 0 states 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 13:32:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134884 states to 134884 states and 187487 transitions. [2024-11-13 13:32:39,210 INFO L78 Accepts]: Start accepts. Automaton has 134884 states and 187487 transitions. Word has length 80 [2024-11-13 13:32:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:39,211 INFO L471 AbstractCegarLoop]: Abstraction has 134884 states and 187487 transitions. [2024-11-13 13:32:39,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 134884 states and 187487 transitions. [2024-11-13 13:32:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:32:39,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:39,218 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:39,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:32:39,218 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:39,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash -487533507, now seen corresponding path program 1 times [2024-11-13 13:32:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:39,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667115784] [2024-11-13 13:32:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:32:39,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:39,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667115784] [2024-11-13 13:32:39,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667115784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:39,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:39,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:39,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158999308] [2024-11-13 13:32:39,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:39,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:39,422 INFO L87 Difference]: Start difference. First operand 134884 states and 187487 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:32:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:40,899 INFO L93 Difference]: Finished difference Result 333219 states and 467697 transitions. [2024-11-13 13:32:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:32:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:41,246 INFO L225 Difference]: With dead ends: 333219 [2024-11-13 13:32:41,246 INFO L226 Difference]: Without dead ends: 273587 [2024-11-13 13:32:41,300 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 13:32:41,300 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 736 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:41,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1185 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273587 states. [2024-11-13 13:32:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273587 to 191707. [2024-11-13 13:32:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191707 states, 191706 states have (on average 1.387682180004799) internal successors, (266027), 191706 states have internal predecessors, (266027), 0 states have call successors, (0), 0 states 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 13:32:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191707 states to 191707 states and 266027 transitions. [2024-11-13 13:32:45,400 INFO L78 Accepts]: Start accepts. Automaton has 191707 states and 266027 transitions. Word has length 80 [2024-11-13 13:32:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:45,400 INFO L471 AbstractCegarLoop]: Abstraction has 191707 states and 266027 transitions. [2024-11-13 13:32:45,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:32:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 191707 states and 266027 transitions. [2024-11-13 13:32:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:32:45,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:45,406 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:45,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:32:45,406 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:45,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1701945514, now seen corresponding path program 1 times [2024-11-13 13:32:45,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:45,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042119170] [2024-11-13 13:32:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:45,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:45,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:45,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042119170] [2024-11-13 13:32:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042119170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259241587] [2024-11-13 13:32:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:45,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:45,552 INFO L87 Difference]: Start difference. First operand 191707 states and 266027 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:47,879 INFO L93 Difference]: Finished difference Result 450990 states and 625957 transitions. [2024-11-13 13:32:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:47,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:32:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:48,182 INFO L225 Difference]: With dead ends: 450990 [2024-11-13 13:32:48,182 INFO L226 Difference]: Without dead ends: 274557 [2024-11-13 13:32:48,223 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 13:32:48,223 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 88 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:48,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 324 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:32:48,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274557 states. [2024-11-13 13:32:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274557 to 262715. [2024-11-13 13:32:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262715 states, 262714 states have (on average 1.3761771355923171) internal successors, (361541), 262714 states have internal predecessors, (361541), 0 states have call successors, (0), 0 states 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 13:32:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262715 states to 262715 states and 361541 transitions. [2024-11-13 13:32:52,978 INFO L78 Accepts]: Start accepts. Automaton has 262715 states and 361541 transitions. Word has length 80 [2024-11-13 13:32:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:52,978 INFO L471 AbstractCegarLoop]: Abstraction has 262715 states and 361541 transitions. [2024-11-13 13:32:52,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:32:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 262715 states and 361541 transitions. [2024-11-13 13:32:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:32:52,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:52,983 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:52,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:32:52,984 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:52,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1190794252, now seen corresponding path program 1 times [2024-11-13 13:32:52,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:52,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110005972] [2024-11-13 13:32:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:32:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110005972] [2024-11-13 13:32:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110005972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:53,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:53,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344866506] [2024-11-13 13:32:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:53,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:53,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:53,239 INFO L87 Difference]: Start difference. First operand 262715 states and 361541 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 13:32:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:55,511 INFO L93 Difference]: Finished difference Result 513074 states and 713063 transitions. [2024-11-13 13:32:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:55,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:32:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:56,039 INFO L225 Difference]: With dead ends: 513074 [2024-11-13 13:32:56,039 INFO L226 Difference]: Without dead ends: 443261 [2024-11-13 13:32:56,096 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 13:32:56,096 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 774 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:56,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 985 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443261 states. [2024-11-13 13:33:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443261 to 319308. [2024-11-13 13:33:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319308 states, 319307 states have (on average 1.376327484207988) internal successors, (439471), 319307 states have internal predecessors, (439471), 0 states have call successors, (0), 0 states 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 13:33:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319308 states to 319308 states and 439471 transitions. [2024-11-13 13:33:01,656 INFO L78 Accepts]: Start accepts. Automaton has 319308 states and 439471 transitions. Word has length 80 [2024-11-13 13:33:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:01,656 INFO L471 AbstractCegarLoop]: Abstraction has 319308 states and 439471 transitions. [2024-11-13 13:33:01,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 13:33:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand 319308 states and 439471 transitions. [2024-11-13 13:33:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:33:01,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:01,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:33:01,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:33:01,663 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:01,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 164048609, now seen corresponding path program 1 times [2024-11-13 13:33:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:01,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071020945] [2024-11-13 13:33:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:01,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat