./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.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 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:49:55,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:49:55,500 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:49:55,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:49:55,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:49:55,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:49:55,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:49:55,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:49:55,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:49:55,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:49:55,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:49:55,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:49:55,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:49:55,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:49:55,531 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:49:55,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:49:55,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:49:55,531 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:49:55,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:49:55,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:49:55,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:49:55,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:49:55,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:49:55,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:49:55,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:49:55,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:49:55,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:49:55,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:49:55,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:49:55,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:49:55,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:49:55,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:49:55,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:49:55,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:49:55,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:49:55,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:49:55,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:49:55,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:49:55,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:49:55,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:49:55,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:49:55,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:49:55,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2024-10-24 14:49:55,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:49:55,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:49:55,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:49:55,766 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:49:55,767 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:49:55,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2024-10-24 14:49:57,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:49:57,346 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:49:57,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2024-10-24 14:49:57,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/755a62f7b/8ce01209bf8441258d48e494a49dbea9/FLAGcbda6e212 [2024-10-24 14:49:57,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/755a62f7b/8ce01209bf8441258d48e494a49dbea9 [2024-10-24 14:49:57,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:49:57,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:49:57,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:49:57,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:49:57,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:49:57,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:49:57" (1/1) ... [2024-10-24 14:49:57,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f47a93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:57, skipping insertion in model container [2024-10-24 14:49:57,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:49:57" (1/1) ... [2024-10-24 14:49:57,459 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:49:57,823 WARN L248 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_JEN_test9-2.i[33021,33034] [2024-10-24 14:49:58,009 WARN L248 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_JEN_test9-2.i[84583,84596] [2024-10-24 14:49:58,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:49:58,033 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:49:58,056 WARN L248 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_JEN_test9-2.i[33021,33034] [2024-10-24 14:49:58,130 WARN L248 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_JEN_test9-2.i[84583,84596] [2024-10-24 14:49:58,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:49:58,175 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:49:58,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58 WrapperNode [2024-10-24 14:49:58,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:49:58,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:49:58,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:49:58,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:49:58,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,312 INFO L138 Inliner]: procedures = 177, calls = 773, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3448 [2024-10-24 14:49:58,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:49:58,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:49:58,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:49:58,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:49:58,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,421 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-10-24 14:49:58,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:49:58,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:49:58,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:49:58,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:49:58,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (1/1) ... [2024-10-24 14:49:58,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:49:58,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:49:58,574 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) [2024-10-24 14:49:58,576 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 [2024-10-24 14:49:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:49:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:49:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:49:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:49:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:49:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:49:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:49:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:49:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:49:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:49:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:49:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:49:58,784 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:49:58,786 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:50:00,773 INFO L? ?]: Removed 824 outVars from TransFormulas that were not future-live. [2024-10-24 14:50:00,773 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:50:00,831 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:50:00,831 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-24 14:50:00,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:50:00 BoogieIcfgContainer [2024-10-24 14:50:00,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:50:00,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:50:00,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:50:00,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:50:00,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:49:57" (1/3) ... [2024-10-24 14:50:00,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33babb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:50:00, skipping insertion in model container [2024-10-24 14:50:00,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:49:58" (2/3) ... [2024-10-24 14:50:00,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33babb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:50:00, skipping insertion in model container [2024-10-24 14:50:00,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:50:00" (3/3) ... [2024-10-24 14:50:00,839 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2024-10-24 14:50:00,853 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:50:00,854 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 14:50:00,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:50:00,972 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;@5bec3ade, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:50:00,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 14:50:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 1400 states, 892 states have (on average 1.836322869955157) internal successors, (1638), 1394 states have internal predecessors, (1638), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:50:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 14:50:00,990 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:00,990 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:50:00,991 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:00,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1216099773, now seen corresponding path program 1 times [2024-10-24 14:50:01,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:01,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630042703] [2024-10-24 14:50:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:01,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:50:01,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:01,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630042703] [2024-10-24 14:50:01,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630042703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:50:01,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:50:01,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:50:01,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224219122] [2024-10-24 14:50:01,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:50:01,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:50:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:01,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:50:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:50:01,325 INFO L87 Difference]: Start difference. First operand has 1400 states, 892 states have (on average 1.836322869955157) internal successors, (1638), 1394 states have internal predecessors, (1638), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:01,521 INFO L93 Difference]: Finished difference Result 2799 states and 5787 transitions. [2024-10-24 14:50:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:50:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-24 14:50:01,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:01,550 INFO L225 Difference]: With dead ends: 2799 [2024-10-24 14:50:01,551 INFO L226 Difference]: Without dead ends: 1364 [2024-10-24 14:50:01,564 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 [2024-10-24 14:50:01,568 INFO L432 NwaCegarLoop]: 2570 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:01,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2570 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:50:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2024-10-24 14:50:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2024-10-24 14:50:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 857 states have (on average 1.7736289381563595) internal successors, (1520), 1358 states have internal predecessors, (1520), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:50:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2526 transitions. [2024-10-24 14:50:01,907 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2526 transitions. Word has length 8 [2024-10-24 14:50:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:01,908 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 2526 transitions. [2024-10-24 14:50:01,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2526 transitions. [2024-10-24 14:50:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 14:50:01,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:01,914 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:50:01,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:50:01,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:01,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -271741673, now seen corresponding path program 1 times [2024-10-24 14:50:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589556264] [2024-10-24 14:50:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:50:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589556264] [2024-10-24 14:50:02,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589556264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:50:02,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:50:02,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:50:02,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870310632] [2024-10-24 14:50:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:50:02,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:50:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:50:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:50:02,345 INFO L87 Difference]: Start difference. First operand 1364 states and 2526 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:03,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:03,124 INFO L93 Difference]: Finished difference Result 3882 states and 7281 transitions. [2024-10-24 14:50:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:50:03,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-24 14:50:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:03,142 INFO L225 Difference]: With dead ends: 3882 [2024-10-24 14:50:03,142 INFO L226 Difference]: Without dead ends: 2717 [2024-10-24 14:50:03,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:50:03,148 INFO L432 NwaCegarLoop]: 2740 mSDtfsCounter, 1507 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 7480 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:03,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 7480 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:50:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-10-24 14:50:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1366. [2024-10-24 14:50:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 859 states have (on average 1.7718277066356227) internal successors, (1522), 1360 states have internal predecessors, (1522), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:50:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2528 transitions. [2024-10-24 14:50:03,447 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2528 transitions. Word has length 63 [2024-10-24 14:50:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:03,448 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 2528 transitions. [2024-10-24 14:50:03,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2528 transitions. [2024-10-24 14:50:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-24 14:50:03,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:03,456 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] [2024-10-24 14:50:03,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:50:03,457 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:03,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash -930208392, now seen corresponding path program 1 times [2024-10-24 14:50:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724387207] [2024-10-24 14:50:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:03,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:50:03,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:03,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724387207] [2024-10-24 14:50:03,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724387207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:50:03,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:50:03,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:50:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022920480] [2024-10-24 14:50:03,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:50:03,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:50:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:50:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:50:03,897 INFO L87 Difference]: Start difference. First operand 1366 states and 2528 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:04,006 INFO L93 Difference]: Finished difference Result 2687 states and 4987 transitions. [2024-10-24 14:50:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:50:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-10-24 14:50:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:04,017 INFO L225 Difference]: With dead ends: 2687 [2024-10-24 14:50:04,017 INFO L226 Difference]: Without dead ends: 1324 [2024-10-24 14:50:04,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:50:04,024 INFO L432 NwaCegarLoop]: 2421 mSDtfsCounter, 30 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:04,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7246 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:50:04,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2024-10-24 14:50:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1324. [2024-10-24 14:50:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 817 states have (on average 1.7686658506731947) internal successors, (1445), 1318 states have internal predecessors, (1445), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:50:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2451 transitions. [2024-10-24 14:50:04,180 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2451 transitions. Word has length 139 [2024-10-24 14:50:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:04,180 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2451 transitions. [2024-10-24 14:50:04,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2451 transitions. [2024-10-24 14:50:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-24 14:50:04,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:04,183 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] [2024-10-24 14:50:04,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:50:04,183 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:04,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:04,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1343313156, now seen corresponding path program 1 times [2024-10-24 14:50:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783443226] [2024-10-24 14:50:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:04,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:50:04,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783443226] [2024-10-24 14:50:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783443226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:50:04,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:50:04,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:50:04,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939402327] [2024-10-24 14:50:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:50:04,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:50:04,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:50:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:50:04,317 INFO L87 Difference]: Start difference. First operand 1324 states and 2451 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:04,443 INFO L93 Difference]: Finished difference Result 3869 states and 7222 transitions. [2024-10-24 14:50:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:50:04,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-10-24 14:50:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:04,461 INFO L225 Difference]: With dead ends: 3869 [2024-10-24 14:50:04,461 INFO L226 Difference]: Without dead ends: 2548 [2024-10-24 14:50:04,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:50:04,467 INFO L432 NwaCegarLoop]: 2895 mSDtfsCounter, 1260 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 5322 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:04,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 5322 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:50:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2024-10-24 14:50:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2546. [2024-10-24 14:50:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 1539 states have (on average 1.796621182586095) internal successors, (2765), 2540 states have internal predecessors, (2765), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-10-24 14:50:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 4771 transitions. [2024-10-24 14:50:04,734 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 4771 transitions. Word has length 139 [2024-10-24 14:50:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:04,735 INFO L471 AbstractCegarLoop]: Abstraction has 2546 states and 4771 transitions. [2024-10-24 14:50:04,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:50:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 4771 transitions. [2024-10-24 14:50:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-24 14:50:04,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:04,738 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:50:04,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:50:04,739 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:04,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 551944948, now seen corresponding path program 1 times [2024-10-24 14:50:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352068385] [2024-10-24 14:50:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:04,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:04,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:50:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:04,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:50:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:50:05,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352068385] [2024-10-24 14:50:05,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352068385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:50:05,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:50:05,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:50:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074604260] [2024-10-24 14:50:05,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:50:05,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:50:05,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:05,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:50:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:50:05,005 INFO L87 Difference]: Start difference. First operand 2546 states and 4771 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:50:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:07,531 INFO L93 Difference]: Finished difference Result 4763 states and 9084 transitions. [2024-10-24 14:50:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:50:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-24 14:50:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:07,551 INFO L225 Difference]: With dead ends: 4763 [2024-10-24 14:50:07,551 INFO L226 Difference]: Without dead ends: 2464 [2024-10-24 14:50:07,560 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 [2024-10-24 14:50:07,561 INFO L432 NwaCegarLoop]: 2332 mSDtfsCounter, 37 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 7257 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:07,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 7257 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 14:50:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2024-10-24 14:50:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2462. [2024-10-24 14:50:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1455 states have (on average 1.7945017182130585) internal successors, (2611), 2456 states have internal predecessors, (2611), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-10-24 14:50:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4617 transitions. [2024-10-24 14:50:07,883 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4617 transitions. Word has length 152 [2024-10-24 14:50:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:07,884 INFO L471 AbstractCegarLoop]: Abstraction has 2462 states and 4617 transitions. [2024-10-24 14:50:07,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:50:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4617 transitions. [2024-10-24 14:50:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-24 14:50:07,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:07,885 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:50:07,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:50:07,886 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:07,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash -619569176, now seen corresponding path program 1 times [2024-10-24 14:50:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:07,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730570601] [2024-10-24 14:50:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:08,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:50:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:08,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:50:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:08,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730570601] [2024-10-24 14:50:08,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730570601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:50:08,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:50:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:50:08,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51024387] [2024-10-24 14:50:08,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:50:08,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:50:08,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:50:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:50:08,127 INFO L87 Difference]: Start difference. First operand 2462 states and 4617 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:50:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:13,095 INFO L93 Difference]: Finished difference Result 4915 states and 9225 transitions. [2024-10-24 14:50:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:50:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-24 14:50:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:13,121 INFO L225 Difference]: With dead ends: 4915 [2024-10-24 14:50:13,121 INFO L226 Difference]: Without dead ends: 2543 [2024-10-24 14:50:13,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:50:13,131 INFO L432 NwaCegarLoop]: 2686 mSDtfsCounter, 6050 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 2541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6552 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2541 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:13,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6552 Valid, 6533 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2541 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-10-24 14:50:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2024-10-24 14:50:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1369. [2024-10-24 14:50:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 862 states have (on average 1.7215777262180973) internal successors, (1484), 1363 states have internal predecessors, (1484), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:50:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2490 transitions. [2024-10-24 14:50:13,400 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2490 transitions. Word has length 152 [2024-10-24 14:50:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:13,400 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2490 transitions. [2024-10-24 14:50:13,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:50:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2490 transitions. [2024-10-24 14:50:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 14:50:13,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:13,402 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:50:13,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:50:13,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:13,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash -261366884, now seen corresponding path program 1 times [2024-10-24 14:50:13,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:13,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623474957] [2024-10-24 14:50:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:13,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:14,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:50:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:14,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:50:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:14,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:14,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623474957] [2024-10-24 14:50:14,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623474957] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:50:14,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502380111] [2024-10-24 14:50:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:14,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:50:14,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:50:14,040 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) [2024-10-24 14:50:14,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:50:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:14,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 14:50:14,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:50:14,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 14:50:14,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:50:14,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:50:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:14,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:50:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:14,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502380111] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:50:14,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:50:14,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-10-24 14:50:14,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428257664] [2024-10-24 14:50:14,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:50:14,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 14:50:14,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 14:50:14,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:50:14,705 INFO L87 Difference]: Start difference. First operand 1369 states and 2490 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:50:22,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:22,308 INFO L93 Difference]: Finished difference Result 5222 states and 9633 transitions. [2024-10-24 14:50:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 14:50:22,308 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 162 [2024-10-24 14:50:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:22,329 INFO L225 Difference]: With dead ends: 5222 [2024-10-24 14:50:22,330 INFO L226 Difference]: Without dead ends: 4099 [2024-10-24 14:50:22,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-24 14:50:22,336 INFO L432 NwaCegarLoop]: 1879 mSDtfsCounter, 4315 mSDsluCounter, 10035 mSDsCounter, 0 mSdLazyCounter, 6200 mSolverCounterSat, 2512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5327 SdHoareTripleChecker+Valid, 11914 SdHoareTripleChecker+Invalid, 8712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2512 IncrementalHoareTripleChecker+Valid, 6200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:22,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5327 Valid, 11914 Invalid, 8712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2512 Valid, 6200 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-10-24 14:50:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2024-10-24 14:50:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 1715. [2024-10-24 14:50:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1204 states have (on average 1.611295681063123) internal successors, (1940), 1705 states have internal predecessors, (1940), 506 states have call successors, (506), 3 states have call predecessors, (506), 3 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2024-10-24 14:50:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2952 transitions. [2024-10-24 14:50:22,737 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2952 transitions. Word has length 162 [2024-10-24 14:50:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:22,737 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2952 transitions. [2024-10-24 14:50:22,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:50:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2952 transitions. [2024-10-24 14:50:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-24 14:50:22,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:22,741 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, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:50:22,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 14:50:22,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:50:22,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:22,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1775265373, now seen corresponding path program 1 times [2024-10-24 14:50:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:22,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143119496] [2024-10-24 14:50:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:22,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:25,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:50:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:25,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:50:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:25,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:25,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143119496] [2024-10-24 14:50:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143119496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:50:25,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781609300] [2024-10-24 14:50:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:25,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:50:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:50:25,876 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) [2024-10-24 14:50:25,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:50:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:26,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 14:50:26,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:50:26,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 14:50:26,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:50:26,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:50:26,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:50:26,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:50:26,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:50:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:26,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:50:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781609300] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:50:27,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:50:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-10-24 14:50:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742981180] [2024-10-24 14:50:27,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:50:27,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 14:50:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:27,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 14:50:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2024-10-24 14:50:27,222 INFO L87 Difference]: Start difference. First operand 1715 states and 2952 transitions. Second operand has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:50:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:44,063 INFO L93 Difference]: Finished difference Result 10550 states and 19420 transitions. [2024-10-24 14:50:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 14:50:44,064 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 390 [2024-10-24 14:50:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:44,121 INFO L225 Difference]: With dead ends: 10550 [2024-10-24 14:50:44,121 INFO L226 Difference]: Without dead ends: 9427 [2024-10-24 14:50:44,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 776 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2024-10-24 14:50:44,130 INFO L432 NwaCegarLoop]: 1879 mSDtfsCounter, 16054 mSDsluCounter, 20613 mSDsCounter, 0 mSdLazyCounter, 12095 mSolverCounterSat, 5812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19074 SdHoareTripleChecker+Valid, 22492 SdHoareTripleChecker+Invalid, 17907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5812 IncrementalHoareTripleChecker+Valid, 12095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:44,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19074 Valid, 22492 Invalid, 17907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5812 Valid, 12095 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2024-10-24 14:50:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9427 states. [2024-10-24 14:50:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9427 to 2579. [2024-10-24 14:50:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2062 states have (on average 1.4966052376333656) internal successors, (3086), 2563 states have internal predecessors, (3086), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-10-24 14:50:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4110 transitions. [2024-10-24 14:50:45,065 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4110 transitions. Word has length 390 [2024-10-24 14:50:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:45,066 INFO L471 AbstractCegarLoop]: Abstraction has 2579 states and 4110 transitions. [2024-10-24 14:50:45,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:50:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4110 transitions. [2024-10-24 14:50:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2024-10-24 14:50:45,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:45,079 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, 9, 9, 9, 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] [2024-10-24 14:50:45,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 14:50:45,279 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,SelfDestructingSolverStorable7 [2024-10-24 14:50:45,280 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:50:45,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:50:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1140766513, now seen corresponding path program 2 times [2024-10-24 14:50:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:50:45,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684574743] [2024-10-24 14:50:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:50:45,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:50:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:54,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:50:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:54,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:50:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:50:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:50:54,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:50:54,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684574743] [2024-10-24 14:50:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684574743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:50:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811078509] [2024-10-24 14:50:54,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:50:54,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:50:54,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:50:54,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:50:54,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 14:50:55,332 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:50:55,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:50:55,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:50:55,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:50:55,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:50:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2024-10-24 14:50:55,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:50:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811078509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:50:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:50:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [26] total 33 [2024-10-24 14:50:55,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496964386] [2024-10-24 14:50:55,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:50:55,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:50:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:50:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:50:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 14:50:55,888 INFO L87 Difference]: Start difference. First operand 2579 states and 4110 transitions. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:50:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:50:59,496 INFO L93 Difference]: Finished difference Result 4831 states and 8439 transitions. [2024-10-24 14:50:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:50:59,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 846 [2024-10-24 14:50:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:50:59,511 INFO L225 Difference]: With dead ends: 4831 [2024-10-24 14:50:59,512 INFO L226 Difference]: Without dead ends: 3709 [2024-10-24 14:50:59,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 851 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2024-10-24 14:50:59,518 INFO L432 NwaCegarLoop]: 2636 mSDtfsCounter, 1358 mSDsluCounter, 10088 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 12724 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:50:59,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 12724 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-24 14:50:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2024-10-24 14:50:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 2616. [2024-10-24 14:50:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2099 states have (on average 1.4897570271557885) internal successors, (3127), 2600 states have internal predecessors, (3127), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-10-24 14:50:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 4151 transitions. [2024-10-24 14:50:59,883 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 4151 transitions. Word has length 846 [2024-10-24 14:50:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:50:59,884 INFO L471 AbstractCegarLoop]: Abstraction has 2616 states and 4151 transitions. [2024-10-24 14:50:59,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:50:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 4151 transitions. [2024-10-24 14:50:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2024-10-24 14:50:59,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:50:59,900 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, 9, 9, 9, 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] [2024-10-24 14:50:59,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 14:51:00,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:51:00,101 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:00,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash -105809632, now seen corresponding path program 1 times [2024-10-24 14:51:00,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:00,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087729882] [2024-10-24 14:51:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:00,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:08,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:51:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:08,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:51:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:51:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087729882] [2024-10-24 14:51:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087729882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:51:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719728819] [2024-10-24 14:51:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:08,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:51:08,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:51:08,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:51:08,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 14:51:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:09,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:51:09,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:51:09,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 14:51:09,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:51:10,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:51:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:51:10,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:51:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:51:11,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719728819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:51:11,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:51:11,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 14, 14] total 39 [2024-10-24 14:51:11,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485163553] [2024-10-24 14:51:11,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:51:11,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-24 14:51:11,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-24 14:51:11,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=909, Unknown=0, NotChecked=0, Total=1482 [2024-10-24 14:51:11,486 INFO L87 Difference]: Start difference. First operand 2616 states and 4151 transitions. Second operand has 39 states, 39 states have (on average 41.87179487179487) internal successors, (1633), 38 states have internal predecessors, (1633), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)