./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 13:53:15,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 13:53:15,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 13:53:15,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 13:53:15,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 13:53:15,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 13:53:15,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 13:53:15,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 13:53:15,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 13:53:15,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 13:53:15,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 13:53:15,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 13:53:15,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 13:53:15,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 13:53:15,928 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 13:53:15,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 13:53:15,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 13:53:15,930 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 13:53:15,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 13:53:15,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 13:53:15,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 13:53:15,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 13:53:15,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 13:53:15,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 13:53:15,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 13:53:15,946 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 13:53:15,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 13:53:15,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 13:53:15,947 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 13:53:15,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 13:53:15,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 13:53:15,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 13:53:15,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:53:15,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 13:53:15,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 13:53:15,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 13:53:15,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 13:53:15,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 13:53:15,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 13:53:15,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 13:53:15,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 13:53:15,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 13:53:15,954 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c [2024-11-10 13:53:16,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 13:53:16,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 13:53:16,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 13:53:16,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 13:53:16,251 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 13:53:16,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2024-11-10 13:53:17,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 13:53:18,029 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 13:53:18,031 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2024-11-10 13:53:18,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d94cbbc5/4267647e959e4685bb6e5494c25d3f7e/FLAG1f26eb777 [2024-11-10 13:53:18,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d94cbbc5/4267647e959e4685bb6e5494c25d3f7e [2024-11-10 13:53:18,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 13:53:18,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 13:53:18,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 13:53:18,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 13:53:18,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 13:53:18,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:18,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae007d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18, skipping insertion in model container [2024-11-10 13:53:18,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:18,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 13:53:18,526 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2024-11-10 13:53:18,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:53:18,698 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 13:53:18,733 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2024-11-10 13:53:18,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:53:18,833 INFO L204 MainTranslator]: Completed translation [2024-11-10 13:53:18,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18 WrapperNode [2024-11-10 13:53:18,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 13:53:18,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 13:53:18,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 13:53:18,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 13:53:18,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:18,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,017 INFO L138 Inliner]: procedures = 176, calls = 386, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1713 [2024-11-10 13:53:19,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 13:53:19,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 13:53:19,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 13:53:19,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 13:53:19,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,164 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-10 13:53:19,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,206 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 13:53:19,249 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 13:53:19,249 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 13:53:19,249 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 13:53:19,250 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (1/1) ... [2024-11-10 13:53:19,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:53:19,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:53:19,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 13:53:19,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 13:53:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 13:53:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 13:53:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 13:53:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 13:53:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 13:53:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 13:53:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-10 13:53:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-10 13:53:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-10 13:53:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-10 13:53:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 13:53:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 13:53:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 13:53:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 13:53:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 13:53:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 13:53:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 13:53:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 13:53:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 13:53:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 13:53:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 13:53:19,558 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 13:53:19,560 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 13:53:21,307 INFO L? ?]: Removed 413 outVars from TransFormulas that were not future-live. [2024-11-10 13:53:21,308 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 13:53:21,379 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 13:53:21,383 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-10 13:53:21,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:53:21 BoogieIcfgContainer [2024-11-10 13:53:21,384 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 13:53:21,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 13:53:21,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 13:53:21,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 13:53:21,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:53:18" (1/3) ... [2024-11-10 13:53:21,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd182fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:53:21, skipping insertion in model container [2024-11-10 13:53:21,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:53:18" (2/3) ... [2024-11-10 13:53:21,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd182fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:53:21, skipping insertion in model container [2024-11-10 13:53:21,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:53:21" (3/3) ... [2024-11-10 13:53:21,397 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-2.i [2024-11-10 13:53:21,413 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 13:53:21,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 13:53:21,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 13:53:21,526 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;@48a04596, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 13:53:21,526 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 13:53:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 465 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 456 states have internal predecessors, (717), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 13:53:21,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:21,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:21,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:21,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:21,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1300402004, now seen corresponding path program 1 times [2024-11-10 13:53:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:21,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238666846] [2024-11-10 13:53:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:53:21,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238666846] [2024-11-10 13:53:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238666846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 13:53:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394630490] [2024-11-10 13:53:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:21,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 13:53:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 13:53:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 13:53:21,753 INFO L87 Difference]: Start difference. First operand has 465 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 456 states have internal predecessors, (717), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:21,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:21,914 INFO L93 Difference]: Finished difference Result 928 states and 1506 transitions. [2024-11-10 13:53:21,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 13:53:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-10 13:53:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:21,928 INFO L225 Difference]: With dead ends: 928 [2024-11-10 13:53:21,928 INFO L226 Difference]: Without dead ends: 426 [2024-11-10 13:53:21,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 13:53:21,936 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:21,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:53:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-10 13:53:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2024-11-10 13:53:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 407 states have (on average 1.4447174447174447) internal successors, (588), 417 states have internal predecessors, (588), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 620 transitions. [2024-11-10 13:53:22,003 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 620 transitions. Word has length 11 [2024-11-10 13:53:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:22,004 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 620 transitions. [2024-11-10 13:53:22,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 620 transitions. [2024-11-10 13:53:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 13:53:22,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:22,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:22,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 13:53:22,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:22,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash 52342368, now seen corresponding path program 1 times [2024-11-10 13:53:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817973820] [2024-11-10 13:53:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:53:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817973820] [2024-11-10 13:53:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817973820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:22,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:22,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 13:53:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404078645] [2024-11-10 13:53:22,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:22,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 13:53:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 13:53:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:53:22,115 INFO L87 Difference]: Start difference. First operand 426 states and 620 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:22,301 INFO L93 Difference]: Finished difference Result 846 states and 1234 transitions. [2024-11-10 13:53:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 13:53:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-10 13:53:22,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:22,310 INFO L225 Difference]: With dead ends: 846 [2024-11-10 13:53:22,311 INFO L226 Difference]: Without dead ends: 815 [2024-11-10 13:53:22,313 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 [2024-11-10 13:53:22,314 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 549 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:22,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1185 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 13:53:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-10 13:53:22,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 428. [2024-11-10 13:53:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 409 states have (on average 1.4425427872860637) internal successors, (590), 419 states have internal predecessors, (590), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 622 transitions. [2024-11-10 13:53:22,352 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 622 transitions. Word has length 12 [2024-11-10 13:53:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:22,353 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 622 transitions. [2024-11-10 13:53:22,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 622 transitions. [2024-11-10 13:53:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-10 13:53:22,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:22,361 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:22,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 13:53:22,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:22,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1825676455, now seen corresponding path program 1 times [2024-11-10 13:53:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883907721] [2024-11-10 13:53:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:53:23,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883907721] [2024-11-10 13:53:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883907721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:23,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:53:23,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970764354] [2024-11-10 13:53:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:23,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:53:23,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:23,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:53:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:53:23,014 INFO L87 Difference]: Start difference. First operand 428 states and 622 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:23,198 INFO L93 Difference]: Finished difference Result 855 states and 1243 transitions. [2024-11-10 13:53:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:53:23,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-10 13:53:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:23,201 INFO L225 Difference]: With dead ends: 855 [2024-11-10 13:53:23,201 INFO L226 Difference]: Without dead ends: 431 [2024-11-10 13:53:23,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:53:23,203 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 106 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:23,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1559 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 13:53:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-10 13:53:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 428. [2024-11-10 13:53:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 409 states have (on average 1.4254278728606358) internal successors, (583), 419 states have internal predecessors, (583), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 615 transitions. [2024-11-10 13:53:23,218 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 615 transitions. Word has length 161 [2024-11-10 13:53:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:23,218 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 615 transitions. [2024-11-10 13:53:23,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 615 transitions. [2024-11-10 13:53:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-10 13:53:23,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:23,226 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:23,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 13:53:23,229 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:23,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1704966944, now seen corresponding path program 1 times [2024-11-10 13:53:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226772377] [2024-11-10 13:53:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:53:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226772377] [2024-11-10 13:53:23,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226772377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:23,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:23,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:53:23,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114022969] [2024-11-10 13:53:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:23,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:53:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:53:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:53:23,541 INFO L87 Difference]: Start difference. First operand 428 states and 615 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:23,694 INFO L93 Difference]: Finished difference Result 804 states and 1151 transitions. [2024-11-10 13:53:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 13:53:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-10 13:53:23,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:23,698 INFO L225 Difference]: With dead ends: 804 [2024-11-10 13:53:23,698 INFO L226 Difference]: Without dead ends: 380 [2024-11-10 13:53:23,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:53:23,700 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 9 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:23,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1426 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:53:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-10 13:53:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-10 13:53:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 361 states have (on average 1.3933518005540166) internal successors, (503), 371 states have internal predecessors, (503), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 535 transitions. [2024-11-10 13:53:23,714 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 535 transitions. Word has length 161 [2024-11-10 13:53:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:23,716 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 535 transitions. [2024-11-10 13:53:23,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 535 transitions. [2024-11-10 13:53:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-10 13:53:23,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:23,720 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:23,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 13:53:23,721 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:23,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:23,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1141993505, now seen corresponding path program 1 times [2024-11-10 13:53:23,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:23,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626733178] [2024-11-10 13:53:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:23,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:53:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626733178] [2024-11-10 13:53:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626733178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:23,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 13:53:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175597101] [2024-11-10 13:53:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:23,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 13:53:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 13:53:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:53:23,986 INFO L87 Difference]: Start difference. First operand 380 states and 535 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:24,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:24,144 INFO L93 Difference]: Finished difference Result 838 states and 1176 transitions. [2024-11-10 13:53:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 13:53:24,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-10 13:53:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:24,148 INFO L225 Difference]: With dead ends: 838 [2024-11-10 13:53:24,148 INFO L226 Difference]: Without dead ends: 462 [2024-11-10 13:53:24,149 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 [2024-11-10 13:53:24,150 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 54 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:24,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 987 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:53:24,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-10 13:53:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2024-11-10 13:53:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 443 states have (on average 1.381489841986456) internal successors, (612), 453 states have internal predecessors, (612), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 644 transitions. [2024-11-10 13:53:24,163 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 644 transitions. Word has length 161 [2024-11-10 13:53:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:24,164 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 644 transitions. [2024-11-10 13:53:24,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:53:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 644 transitions. [2024-11-10 13:53:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 13:53:24,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:24,167 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:24,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 13:53:24,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:24,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1326339478, now seen corresponding path program 1 times [2024-11-10 13:53:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:24,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096092822] [2024-11-10 13:53:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:24,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:53:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:24,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:53:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:53:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:24,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096092822] [2024-11-10 13:53:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096092822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:24,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:24,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 13:53:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765570922] [2024-11-10 13:53:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:24,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 13:53:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 13:53:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:53:24,556 INFO L87 Difference]: Start difference. First operand 462 states and 644 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 13:53:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:25,066 INFO L93 Difference]: Finished difference Result 799 states and 1118 transitions. [2024-11-10 13:53:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 13:53:25,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-10 13:53:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:25,071 INFO L225 Difference]: With dead ends: 799 [2024-11-10 13:53:25,071 INFO L226 Difference]: Without dead ends: 423 [2024-11-10 13:53:25,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 13:53:25,073 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 44 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:25,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1439 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 13:53:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-10 13:53:25,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2024-11-10 13:53:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 401 states have (on average 1.3341645885286784) internal successors, (535), 411 states have internal predecessors, (535), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 567 transitions. [2024-11-10 13:53:25,087 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 567 transitions. Word has length 176 [2024-11-10 13:53:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:25,087 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 567 transitions. [2024-11-10 13:53:25,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 13:53:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 567 transitions. [2024-11-10 13:53:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 13:53:25,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:25,090 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:25,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 13:53:25,090 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:25,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash 961843872, now seen corresponding path program 1 times [2024-11-10 13:53:25,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:25,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605936031] [2024-11-10 13:53:25,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:25,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:25,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:53:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:25,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:53:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:53:25,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:25,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605936031] [2024-11-10 13:53:25,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605936031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:25,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 13:53:25,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276141095] [2024-11-10 13:53:25,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:25,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 13:53:25,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 13:53:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:53:25,412 INFO L87 Difference]: Start difference. First operand 420 states and 567 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 13:53:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:25,896 INFO L93 Difference]: Finished difference Result 751 states and 1024 transitions. [2024-11-10 13:53:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 13:53:25,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-10 13:53:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:25,899 INFO L225 Difference]: With dead ends: 751 [2024-11-10 13:53:25,899 INFO L226 Difference]: Without dead ends: 417 [2024-11-10 13:53:25,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 13:53:25,901 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 17 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:25,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1446 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 13:53:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-10 13:53:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2024-11-10 13:53:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 395 states have (on average 1.3291139240506329) internal successors, (525), 405 states have internal predecessors, (525), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 13:53:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 557 transitions. [2024-11-10 13:53:25,911 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 557 transitions. Word has length 176 [2024-11-10 13:53:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:25,911 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 557 transitions. [2024-11-10 13:53:25,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 13:53:25,912 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 557 transitions. [2024-11-10 13:53:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 13:53:25,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:25,914 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:25,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 13:53:25,914 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:25,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1426429980, now seen corresponding path program 1 times [2024-11-10 13:53:25,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:25,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209801820] [2024-11-10 13:53:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:25,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:26,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:53:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:26,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:53:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:53:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209801820] [2024-11-10 13:53:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209801820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:53:26,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:53:26,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:53:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782077335] [2024-11-10 13:53:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:53:26,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:53:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:53:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:53:26,221 INFO L87 Difference]: Start difference. First operand 414 states and 557 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 13:53:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:26,673 INFO L93 Difference]: Finished difference Result 887 states and 1203 transitions. [2024-11-10 13:53:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:53:26,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-10 13:53:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:26,678 INFO L225 Difference]: With dead ends: 887 [2024-11-10 13:53:26,679 INFO L226 Difference]: Without dead ends: 559 [2024-11-10 13:53:26,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:53:26,681 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 168 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:26,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1112 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 13:53:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-10 13:53:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 556. [2024-11-10 13:53:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 534 states have (on average 1.3258426966292134) internal successors, (708), 544 states have internal predecessors, (708), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-10 13:53:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 746 transitions. [2024-11-10 13:53:26,699 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 746 transitions. Word has length 176 [2024-11-10 13:53:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:26,702 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 746 transitions. [2024-11-10 13:53:26,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-10 13:53:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 746 transitions. [2024-11-10 13:53:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-10 13:53:26,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:26,705 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:26,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 13:53:26,705 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:26,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash -401657797, now seen corresponding path program 1 times [2024-11-10 13:53:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:26,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044270024] [2024-11-10 13:53:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:27,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:53:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:27,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:53:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:27,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-10 13:53:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:27,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-10 13:53:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:53:27,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:27,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044270024] [2024-11-10 13:53:27,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044270024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:53:27,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728552638] [2024-11-10 13:53:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:27,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:53:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:53:27,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 13:53:27,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 13:53:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:27,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 13:53:27,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:53:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:53:27,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:53:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:53:28,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728552638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:53:28,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:53:28,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-10 13:53:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283099418] [2024-11-10 13:53:28,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:53:28,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 13:53:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 13:53:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:53:28,128 INFO L87 Difference]: Start difference. First operand 556 states and 746 transitions. Second operand has 8 states, 8 states have (on average 62.0) internal successors, (496), 7 states have internal predecessors, (496), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 13:53:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:29,186 INFO L93 Difference]: Finished difference Result 1241 states and 1689 transitions. [2024-11-10 13:53:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 13:53:29,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 62.0) internal successors, (496), 7 states have internal predecessors, (496), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 191 [2024-11-10 13:53:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:29,193 INFO L225 Difference]: With dead ends: 1241 [2024-11-10 13:53:29,193 INFO L226 Difference]: Without dead ends: 1210 [2024-11-10 13:53:29,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:53:29,195 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 1575 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:29,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2263 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-10 13:53:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-10 13:53:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1207. [2024-11-10 13:53:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1170 states have (on average 1.317094017094017) internal successors, (1541), 1180 states have internal predecessors, (1541), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-10 13:53:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1609 transitions. [2024-11-10 13:53:29,225 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1609 transitions. Word has length 191 [2024-11-10 13:53:29,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:29,226 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1609 transitions. [2024-11-10 13:53:29,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 62.0) internal successors, (496), 7 states have internal predecessors, (496), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 13:53:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1609 transitions. [2024-11-10 13:53:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-10 13:53:29,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:29,238 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:29,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 13:53:29,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:53:29,439 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:29,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:29,439 INFO L85 PathProgramCache]: Analyzing trace with hash -927363062, now seen corresponding path program 1 times [2024-11-10 13:53:29,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:29,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36807747] [2024-11-10 13:53:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:29,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:53:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:31,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:53:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:31,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:53:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:31,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-10 13:53:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:31,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-10 13:53:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:53:31,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:53:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36807747] [2024-11-10 13:53:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36807747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:53:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687296158] [2024-11-10 13:53:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:53:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:53:31,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 13:53:31,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 13:53:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:53:32,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 13:53:32,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:53:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:53:33,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:53:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:53:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687296158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:53:33,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:53:33,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-10 13:53:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17910117] [2024-11-10 13:53:33,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:53:33,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 13:53:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:53:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 13:53:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:53:33,921 INFO L87 Difference]: Start difference. First operand 1207 states and 1609 transitions. Second operand has 14 states, 14 states have (on average 99.28571428571429) internal successors, (1390), 13 states have internal predecessors, (1390), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 13:53:35,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:53:35,078 INFO L93 Difference]: Finished difference Result 2999 states and 4062 transitions. [2024-11-10 13:53:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 13:53:35,079 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 99.28571428571429) internal successors, (1390), 13 states have internal predecessors, (1390), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 638 [2024-11-10 13:53:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:53:35,092 INFO L225 Difference]: With dead ends: 2999 [2024-11-10 13:53:35,092 INFO L226 Difference]: Without dead ends: 2968 [2024-11-10 13:53:35,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1289 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:53:35,095 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 3351 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3455 SdHoareTripleChecker+Valid, 5058 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-10 13:53:35,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3455 Valid, 5058 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-10 13:53:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2024-11-10 13:53:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2965. [2024-11-10 13:53:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2892 states have (on average 1.3150069156293223) internal successors, (3803), 2902 states have internal predecessors, (3803), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-10 13:53:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 3943 transitions. [2024-11-10 13:53:35,164 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 3943 transitions. Word has length 638 [2024-11-10 13:53:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:53:35,166 INFO L471 AbstractCegarLoop]: Abstraction has 2965 states and 3943 transitions. [2024-11-10 13:53:35,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 99.28571428571429) internal successors, (1390), 13 states have internal predecessors, (1390), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 13:53:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 3943 transitions. [2024-11-10 13:53:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1533 [2024-11-10 13:53:35,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:53:35,236 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:53:35,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 13:53:35,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 13:53:35,441 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:53:35,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:53:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1160100330, now seen corresponding path program 2 times [2024-11-10 13:53:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:53:35,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616545160] [2024-11-10 13:53:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:53:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms