./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:08:21,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:08:21,202 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 23:08:21,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:08:21,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:08:21,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:08:21,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:08:21,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:08:21,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 23:08:21,240 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 23:08:21,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:08:21,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:08:21,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:08:21,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:08:21,242 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:08:21,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:08:21,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:08:21,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:08:21,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:08:21,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:08:21,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:08:21,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:08:21,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:08:21,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:08:21,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:08:21,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:08:21,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:08:21,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:08:21,249 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:08:21,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:08:21,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 23:08:21,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:08:21,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:08:21,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:08:21,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:08:21,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:08:21,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:08:21,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:08:21,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:08:21,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:08:21,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:08:21,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:08:21,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2024-11-16 23:08:21,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:08:21,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:08:21,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:08:21,535 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:08:21,535 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:08:21,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2024-11-16 23:08:22,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:08:23,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:08:23,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2024-11-16 23:08:23,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72281aa8a/b8f798677184421c9e644c013c93fa02/FLAG12d0a2944 [2024-11-16 23:08:23,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72281aa8a/b8f798677184421c9e644c013c93fa02 [2024-11-16 23:08:23,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:08:23,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:08:23,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:08:23,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:08:23,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:08:23,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:08:23" (1/1) ... [2024-11-16 23:08:23,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5402b488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:23, skipping insertion in model container [2024-11-16 23:08:23,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:08:23" (1/1) ... [2024-11-16 23:08:23,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:08:23,881 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2024-11-16 23:08:23,895 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2024-11-16 23:08:24,028 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2024-11-16 23:08:24,031 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2024-11-16 23:08:24,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:08:24,071 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:08:24,104 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2024-11-16 23:08:24,106 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2024-11-16 23:08:24,151 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2024-11-16 23:08:24,153 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2024-11-16 23:08:24,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:08:24,222 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:08:24,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24 WrapperNode [2024-11-16 23:08:24,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:08:24,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:08:24,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:08:24,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:08:24,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,344 INFO L138 Inliner]: procedures = 282, calls = 349, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1607 [2024-11-16 23:08:24,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:08:24,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:08:24,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:08:24,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:08:24,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,506 INFO L175 MemorySlicer]: Split 318 memory accesses to 4 slices as follows [2, 12, 270, 34]. 85 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 62 writes are split as follows [0, 1, 57, 4]. [2024-11-16 23:08:24,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,564 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:08:24,602 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:08:24,602 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:08:24,603 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:08:24,603 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (1/1) ... [2024-11-16 23:08:24,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:08:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:08:24,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 23:08:24,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 23:08:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 23:08:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 23:08:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 23:08:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 23:08:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-16 23:08:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 23:08:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2024-11-16 23:08:24,695 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2024-11-16 23:08:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 23:08:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 23:08:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 23:08:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 23:08:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 23:08:24,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 23:08:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 23:08:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 23:08:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 23:08:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 23:08:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 23:08:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:08:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2024-11-16 23:08:24,698 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2024-11-16 23:08:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 23:08:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 23:08:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 23:08:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-16 23:08:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2024-11-16 23:08:24,700 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2024-11-16 23:08:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 23:08:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 23:08:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 23:08:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 23:08:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:08:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:08:24,981 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:08:24,983 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:08:25,040 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2024-11-16 23:08:26,289 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2024-11-16 23:08:26,290 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2024-11-16 23:08:26,290 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-16 23:08:26,409 INFO L? ?]: Removed 363 outVars from TransFormulas that were not future-live. [2024-11-16 23:08:26,409 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:08:26,494 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:08:26,494 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-16 23:08:26,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:08:26 BoogieIcfgContainer [2024-11-16 23:08:26,495 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:08:26,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:08:26,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:08:26,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:08:26,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:08:23" (1/3) ... [2024-11-16 23:08:26,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d998dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:08:26, skipping insertion in model container [2024-11-16 23:08:26,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:24" (2/3) ... [2024-11-16 23:08:26,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d998dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:08:26, skipping insertion in model container [2024-11-16 23:08:26,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:08:26" (3/3) ... [2024-11-16 23:08:26,511 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2024-11-16 23:08:26,528 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:08:26,528 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-16 23:08:26,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:08:26,618 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;@d40d0fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:08:26,618 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 23:08:26,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 480 states, 455 states have (on average 1.5934065934065933) internal successors, (725), 460 states have internal predecessors, (725), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 23:08:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 23:08:26,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:26,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:26,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:26,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1871319507, now seen corresponding path program 1 times [2024-11-16 23:08:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:26,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965439858] [2024-11-16 23:08:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965439858] [2024-11-16 23:08:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965439858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:26,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:08:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068194767] [2024-11-16 23:08:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:26,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:08:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:26,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:08:26,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:08:26,915 INFO L87 Difference]: Start difference. First operand has 480 states, 455 states have (on average 1.5934065934065933) internal successors, (725), 460 states have internal predecessors, (725), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:27,076 INFO L93 Difference]: Finished difference Result 955 states and 1520 transitions. [2024-11-16 23:08:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:08:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-11-16 23:08:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:27,092 INFO L225 Difference]: With dead ends: 955 [2024-11-16 23:08:27,092 INFO L226 Difference]: Without dead ends: 473 [2024-11-16 23:08:27,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:08:27,101 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:27,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 630 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:08:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-16 23:08:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2024-11-16 23:08:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 450 states have (on average 1.42) internal successors, (639), 454 states have internal predecessors, (639), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 669 transitions. [2024-11-16 23:08:27,166 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 669 transitions. Word has length 9 [2024-11-16 23:08:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:27,166 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 669 transitions. [2024-11-16 23:08:27,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 669 transitions. [2024-11-16 23:08:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 23:08:27,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:27,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:27,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:08:27,168 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:27,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1715575217, now seen corresponding path program 1 times [2024-11-16 23:08:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:27,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345785054] [2024-11-16 23:08:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:27,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345785054] [2024-11-16 23:08:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345785054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:27,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:27,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:08:27,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21821695] [2024-11-16 23:08:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:27,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:08:27,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:08:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:08:27,395 INFO L87 Difference]: Start difference. First operand 473 states and 669 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:27,792 INFO L93 Difference]: Finished difference Result 1173 states and 1669 transitions. [2024-11-16 23:08:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:08:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2024-11-16 23:08:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:27,798 INFO L225 Difference]: With dead ends: 1173 [2024-11-16 23:08:27,799 INFO L226 Difference]: Without dead ends: 919 [2024-11-16 23:08:27,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:08:27,801 INFO L432 NwaCegarLoop]: 650 mSDtfsCounter, 612 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:27,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1892 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 23:08:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2024-11-16 23:08:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 475. [2024-11-16 23:08:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 452 states have (on average 1.418141592920354) internal successors, (641), 456 states have internal predecessors, (641), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:27,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 671 transitions. [2024-11-16 23:08:27,856 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 671 transitions. Word has length 11 [2024-11-16 23:08:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:27,857 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 671 transitions. [2024-11-16 23:08:27,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 671 transitions. [2024-11-16 23:08:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 23:08:27,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:27,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:27,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:08:27,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:27,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:27,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1404729437, now seen corresponding path program 1 times [2024-11-16 23:08:27,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:27,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676239175] [2024-11-16 23:08:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:27,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676239175] [2024-11-16 23:08:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676239175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:28,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:28,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:08:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467958077] [2024-11-16 23:08:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:28,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:08:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:08:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:08:28,158 INFO L87 Difference]: Start difference. First operand 475 states and 671 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:28,339 INFO L93 Difference]: Finished difference Result 949 states and 1341 transitions. [2024-11-16 23:08:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:08:28,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 23:08:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:28,342 INFO L225 Difference]: With dead ends: 949 [2024-11-16 23:08:28,344 INFO L226 Difference]: Without dead ends: 478 [2024-11-16 23:08:28,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:08:28,347 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 105 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:28,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1709 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:08:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-16 23:08:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 475. [2024-11-16 23:08:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 452 states have (on average 1.4026548672566372) internal successors, (634), 456 states have internal predecessors, (634), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 664 transitions. [2024-11-16 23:08:28,366 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 664 transitions. Word has length 68 [2024-11-16 23:08:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:28,367 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 664 transitions. [2024-11-16 23:08:28,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 664 transitions. [2024-11-16 23:08:28,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 23:08:28,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:28,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:28,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 23:08:28,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:28,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1689936470, now seen corresponding path program 1 times [2024-11-16 23:08:28,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:28,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923357928] [2024-11-16 23:08:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:28,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:28,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923357928] [2024-11-16 23:08:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923357928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:28,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:28,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 23:08:28,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359877634] [2024-11-16 23:08:28,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:28,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:08:28,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:08:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:08:28,948 INFO L87 Difference]: Start difference. First operand 475 states and 664 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:29,698 INFO L93 Difference]: Finished difference Result 982 states and 1371 transitions. [2024-11-16 23:08:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:08:29,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 23:08:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:29,702 INFO L225 Difference]: With dead ends: 982 [2024-11-16 23:08:29,702 INFO L226 Difference]: Without dead ends: 511 [2024-11-16 23:08:29,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:29,704 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 14 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:29,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2550 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:08:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-16 23:08:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 504. [2024-11-16 23:08:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 481 states have (on average 1.3908523908523909) internal successors, (669), 485 states have internal predecessors, (669), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 699 transitions. [2024-11-16 23:08:29,717 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 699 transitions. Word has length 68 [2024-11-16 23:08:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:29,718 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 699 transitions. [2024-11-16 23:08:29,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 699 transitions. [2024-11-16 23:08:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 23:08:29,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:29,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:29,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 23:08:29,721 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:29,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:29,721 INFO L85 PathProgramCache]: Analyzing trace with hash -339622243, now seen corresponding path program 1 times [2024-11-16 23:08:29,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:29,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918492652] [2024-11-16 23:08:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:29,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:29,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:29,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918492652] [2024-11-16 23:08:29,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918492652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:29,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:29,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:08:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591815047] [2024-11-16 23:08:29,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:29,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:08:29,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:29,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:08:29,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:29,997 INFO L87 Difference]: Start difference. First operand 504 states and 699 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:30,649 INFO L93 Difference]: Finished difference Result 1017 states and 1415 transitions. [2024-11-16 23:08:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:08:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 23:08:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:30,653 INFO L225 Difference]: With dead ends: 1017 [2024-11-16 23:08:30,653 INFO L226 Difference]: Without dead ends: 517 [2024-11-16 23:08:30,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:30,655 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 15 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:30,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3063 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:08:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-16 23:08:30,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 514. [2024-11-16 23:08:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 491 states have (on average 1.3930753564154785) internal successors, (684), 495 states have internal predecessors, (684), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 714 transitions. [2024-11-16 23:08:30,669 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 714 transitions. Word has length 69 [2024-11-16 23:08:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:30,670 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 714 transitions. [2024-11-16 23:08:30,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 714 transitions. [2024-11-16 23:08:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 23:08:30,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:30,672 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:30,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:08:30,672 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:30,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2126215420, now seen corresponding path program 1 times [2024-11-16 23:08:30,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:30,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663437637] [2024-11-16 23:08:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:30,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:30,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:30,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663437637] [2024-11-16 23:08:30,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663437637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:30,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:30,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:08:30,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305363805] [2024-11-16 23:08:30,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:30,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:08:30,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:08:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:08:30,899 INFO L87 Difference]: Start difference. First operand 514 states and 714 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:31,165 INFO L93 Difference]: Finished difference Result 1027 states and 1428 transitions. [2024-11-16 23:08:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:08:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 23:08:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:31,169 INFO L225 Difference]: With dead ends: 1027 [2024-11-16 23:08:31,169 INFO L226 Difference]: Without dead ends: 517 [2024-11-16 23:08:31,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:08:31,173 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 17 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:31,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1666 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:08:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-16 23:08:31,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 514. [2024-11-16 23:08:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 491 states have (on average 1.3910386965376782) internal successors, (683), 495 states have internal predecessors, (683), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 713 transitions. [2024-11-16 23:08:31,190 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 713 transitions. Word has length 69 [2024-11-16 23:08:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:31,193 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 713 transitions. [2024-11-16 23:08:31,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 713 transitions. [2024-11-16 23:08:31,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 23:08:31,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:31,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:31,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:08:31,195 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:31,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:31,195 INFO L85 PathProgramCache]: Analyzing trace with hash -560656925, now seen corresponding path program 1 times [2024-11-16 23:08:31,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439853278] [2024-11-16 23:08:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:31,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:31,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439853278] [2024-11-16 23:08:31,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439853278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:31,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:31,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 23:08:31,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397740407] [2024-11-16 23:08:31,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:31,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 23:08:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 23:08:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 23:08:31,646 INFO L87 Difference]: Start difference. First operand 514 states and 713 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:32,603 INFO L93 Difference]: Finished difference Result 1040 states and 1447 transitions. [2024-11-16 23:08:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:08:32,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 23:08:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:32,608 INFO L225 Difference]: With dead ends: 1040 [2024-11-16 23:08:32,609 INFO L226 Difference]: Without dead ends: 530 [2024-11-16 23:08:32,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-16 23:08:32,611 INFO L432 NwaCegarLoop]: 602 mSDtfsCounter, 35 mSDsluCounter, 3556 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 4158 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:32,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 4158 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 23:08:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-16 23:08:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 524. [2024-11-16 23:08:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 501 states have (on average 1.3912175648702594) internal successors, (697), 505 states have internal predecessors, (697), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 727 transitions. [2024-11-16 23:08:32,628 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 727 transitions. Word has length 70 [2024-11-16 23:08:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:32,628 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 727 transitions. [2024-11-16 23:08:32,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 727 transitions. [2024-11-16 23:08:32,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 23:08:32,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:32,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:32,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:08:32,631 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:32,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2119837913, now seen corresponding path program 1 times [2024-11-16 23:08:32,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211607684] [2024-11-16 23:08:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:33,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:33,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211607684] [2024-11-16 23:08:33,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211607684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:33,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:33,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 23:08:33,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848449348] [2024-11-16 23:08:33,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:33,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 23:08:33,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 23:08:33,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:08:33,131 INFO L87 Difference]: Start difference. First operand 524 states and 727 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:33,928 INFO L93 Difference]: Finished difference Result 1050 states and 1459 transitions. [2024-11-16 23:08:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 23:08:33,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 23:08:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:33,931 INFO L225 Difference]: With dead ends: 1050 [2024-11-16 23:08:33,932 INFO L226 Difference]: Without dead ends: 530 [2024-11-16 23:08:33,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:08:33,933 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 27 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:33,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3647 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:08:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-16 23:08:33,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 527. [2024-11-16 23:08:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 504 states have (on average 1.3888888888888888) internal successors, (700), 508 states have internal predecessors, (700), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 730 transitions. [2024-11-16 23:08:33,949 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 730 transitions. Word has length 70 [2024-11-16 23:08:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:33,949 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 730 transitions. [2024-11-16 23:08:33,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 730 transitions. [2024-11-16 23:08:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 23:08:33,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:33,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:33,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 23:08:33,951 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:33,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash -408710969, now seen corresponding path program 1 times [2024-11-16 23:08:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:33,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892409484] [2024-11-16 23:08:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892409484] [2024-11-16 23:08:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892409484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:34,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:34,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 23:08:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331656765] [2024-11-16 23:08:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:34,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:08:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:08:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:08:34,241 INFO L87 Difference]: Start difference. First operand 527 states and 730 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:34,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:34,775 INFO L93 Difference]: Finished difference Result 1053 states and 1461 transitions. [2024-11-16 23:08:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:08:34,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 23:08:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:34,778 INFO L225 Difference]: With dead ends: 1053 [2024-11-16 23:08:34,778 INFO L226 Difference]: Without dead ends: 530 [2024-11-16 23:08:34,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:08:34,780 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 8 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:34,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2578 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 23:08:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-16 23:08:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2024-11-16 23:08:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 507 states have (on average 1.3865877712031558) internal successors, (703), 511 states have internal predecessors, (703), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 733 transitions. [2024-11-16 23:08:34,794 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 733 transitions. Word has length 70 [2024-11-16 23:08:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:34,794 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 733 transitions. [2024-11-16 23:08:34,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 733 transitions. [2024-11-16 23:08:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 23:08:34,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:34,796 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:34,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 23:08:34,796 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:34,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash 259418596, now seen corresponding path program 1 times [2024-11-16 23:08:34,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:34,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9962439] [2024-11-16 23:08:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9962439] [2024-11-16 23:08:35,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9962439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:35,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:35,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 23:08:35,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540951644] [2024-11-16 23:08:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:35,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 23:08:35,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 23:08:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 23:08:35,324 INFO L87 Difference]: Start difference. First operand 530 states and 733 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:36,963 INFO L93 Difference]: Finished difference Result 1560 states and 2171 transitions. [2024-11-16 23:08:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 23:08:36,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 23:08:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:36,968 INFO L225 Difference]: With dead ends: 1560 [2024-11-16 23:08:36,968 INFO L226 Difference]: Without dead ends: 1034 [2024-11-16 23:08:36,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-16 23:08:36,970 INFO L432 NwaCegarLoop]: 648 mSDtfsCounter, 923 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:36,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 4279 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 23:08:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-11-16 23:08:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 563. [2024-11-16 23:08:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 540 states have (on average 1.3722222222222222) internal successors, (741), 544 states have internal predecessors, (741), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 771 transitions. [2024-11-16 23:08:36,990 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 771 transitions. Word has length 71 [2024-11-16 23:08:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:36,990 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 771 transitions. [2024-11-16 23:08:36,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 771 transitions. [2024-11-16 23:08:36,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 23:08:36,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:36,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:36,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 23:08:36,992 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:36,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash -123065198, now seen corresponding path program 1 times [2024-11-16 23:08:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470977532] [2024-11-16 23:08:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470977532] [2024-11-16 23:08:37,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470977532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:37,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:37,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:08:37,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386229341] [2024-11-16 23:08:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:37,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:08:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:08:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:37,302 INFO L87 Difference]: Start difference. First operand 563 states and 771 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:38,010 INFO L93 Difference]: Finished difference Result 1096 states and 1511 transitions. [2024-11-16 23:08:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:08:38,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 23:08:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:38,014 INFO L225 Difference]: With dead ends: 1096 [2024-11-16 23:08:38,014 INFO L226 Difference]: Without dead ends: 570 [2024-11-16 23:08:38,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:08:38,016 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 14 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:38,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3071 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:08:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-16 23:08:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 563. [2024-11-16 23:08:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 540 states have (on average 1.3722222222222222) internal successors, (741), 544 states have internal predecessors, (741), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 771 transitions. [2024-11-16 23:08:38,035 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 771 transitions. Word has length 71 [2024-11-16 23:08:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:38,036 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 771 transitions. [2024-11-16 23:08:38,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 771 transitions. [2024-11-16 23:08:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 23:08:38,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:38,037 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:38,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 23:08:38,037 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:38,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1958564416, now seen corresponding path program 1 times [2024-11-16 23:08:38,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:38,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206255600] [2024-11-16 23:08:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:38,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206255600] [2024-11-16 23:08:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206255600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:38,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:38,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 23:08:38,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088575767] [2024-11-16 23:08:38,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:38,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 23:08:38,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 23:08:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 23:08:38,334 INFO L87 Difference]: Start difference. First operand 563 states and 771 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:39,084 INFO L93 Difference]: Finished difference Result 1102 states and 1518 transitions. [2024-11-16 23:08:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:08:39,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-16 23:08:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:39,088 INFO L225 Difference]: With dead ends: 1102 [2024-11-16 23:08:39,088 INFO L226 Difference]: Without dead ends: 576 [2024-11-16 23:08:39,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 23:08:39,090 INFO L432 NwaCegarLoop]: 602 mSDtfsCounter, 20 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:39,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4160 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:08:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-16 23:08:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 566. [2024-11-16 23:08:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 543 states have (on average 1.3720073664825045) internal successors, (745), 547 states have internal predecessors, (745), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 775 transitions. [2024-11-16 23:08:39,109 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 775 transitions. Word has length 72 [2024-11-16 23:08:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:39,109 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 775 transitions. [2024-11-16 23:08:39,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:39,109 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 775 transitions. [2024-11-16 23:08:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 23:08:39,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:39,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:39,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 23:08:39,111 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:39,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1857644174, now seen corresponding path program 1 times [2024-11-16 23:08:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:39,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954112550] [2024-11-16 23:08:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:39,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:39,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:39,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954112550] [2024-11-16 23:08:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954112550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:39,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:39,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 23:08:39,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501850682] [2024-11-16 23:08:39,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:39,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 23:08:39,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:39,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 23:08:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 23:08:39,399 INFO L87 Difference]: Start difference. First operand 566 states and 775 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:40,299 INFO L93 Difference]: Finished difference Result 1123 states and 1547 transitions. [2024-11-16 23:08:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:08:40,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-16 23:08:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:40,303 INFO L225 Difference]: With dead ends: 1123 [2024-11-16 23:08:40,303 INFO L226 Difference]: Without dead ends: 594 [2024-11-16 23:08:40,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:08:40,305 INFO L432 NwaCegarLoop]: 613 mSDtfsCounter, 39 mSDsluCounter, 3477 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:40,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4090 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 23:08:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-16 23:08:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 566. [2024-11-16 23:08:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 543 states have (on average 1.3720073664825045) internal successors, (745), 547 states have internal predecessors, (745), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 775 transitions. [2024-11-16 23:08:40,324 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 775 transitions. Word has length 72 [2024-11-16 23:08:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:40,324 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 775 transitions. [2024-11-16 23:08:40,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 775 transitions. [2024-11-16 23:08:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 23:08:40,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:40,325 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:40,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 23:08:40,326 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:40,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash -186122439, now seen corresponding path program 1 times [2024-11-16 23:08:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:40,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598893505] [2024-11-16 23:08:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:40,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:40,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:40,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598893505] [2024-11-16 23:08:40,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598893505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:40,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:40,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 23:08:40,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827164073] [2024-11-16 23:08:40,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:40,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:08:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:40,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:08:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:08:40,618 INFO L87 Difference]: Start difference. First operand 566 states and 775 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:41,472 INFO L93 Difference]: Finished difference Result 1111 states and 1531 transitions. [2024-11-16 23:08:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:08:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 23:08:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:41,475 INFO L225 Difference]: With dead ends: 1111 [2024-11-16 23:08:41,475 INFO L226 Difference]: Without dead ends: 582 [2024-11-16 23:08:41,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-16 23:08:41,476 INFO L432 NwaCegarLoop]: 608 mSDtfsCounter, 26 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:41,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 4112 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 23:08:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-16 23:08:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 576. [2024-11-16 23:08:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 553 states have (on average 1.3688969258589512) internal successors, (757), 557 states have internal predecessors, (757), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 787 transitions. [2024-11-16 23:08:41,493 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 787 transitions. Word has length 73 [2024-11-16 23:08:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:41,494 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 787 transitions. [2024-11-16 23:08:41,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 787 transitions. [2024-11-16 23:08:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 23:08:41,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:41,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:41,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 23:08:41,496 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:41,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2142740437, now seen corresponding path program 1 times [2024-11-16 23:08:41,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:41,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922380667] [2024-11-16 23:08:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:41,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:41,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:41,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922380667] [2024-11-16 23:08:41,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922380667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:41,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:41,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 23:08:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975925453] [2024-11-16 23:08:41,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:41,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:08:41,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:41,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:08:41,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:08:41,792 INFO L87 Difference]: Start difference. First operand 576 states and 787 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:42,652 INFO L93 Difference]: Finished difference Result 1133 states and 1558 transitions. [2024-11-16 23:08:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:08:42,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 23:08:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:42,656 INFO L225 Difference]: With dead ends: 1133 [2024-11-16 23:08:42,656 INFO L226 Difference]: Without dead ends: 594 [2024-11-16 23:08:42,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:08:42,659 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 17 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4584 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:42,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4584 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 23:08:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-16 23:08:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 579. [2024-11-16 23:08:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 556 states have (on average 1.368705035971223) internal successors, (761), 560 states have internal predecessors, (761), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 791 transitions. [2024-11-16 23:08:42,677 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 791 transitions. Word has length 73 [2024-11-16 23:08:42,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:42,678 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 791 transitions. [2024-11-16 23:08:42,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:42,678 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 791 transitions. [2024-11-16 23:08:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 23:08:42,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:42,680 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:42,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 23:08:42,680 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:42,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1964081867, now seen corresponding path program 1 times [2024-11-16 23:08:42,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:42,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101996586] [2024-11-16 23:08:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:43,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101996586] [2024-11-16 23:08:43,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101996586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:43,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:43,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:08:43,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171576452] [2024-11-16 23:08:43,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:43,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:08:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:08:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:43,039 INFO L87 Difference]: Start difference. First operand 579 states and 791 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:43,651 INFO L93 Difference]: Finished difference Result 1128 states and 1548 transitions. [2024-11-16 23:08:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:08:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 23:08:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:43,655 INFO L225 Difference]: With dead ends: 1128 [2024-11-16 23:08:43,655 INFO L226 Difference]: Without dead ends: 586 [2024-11-16 23:08:43,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:43,657 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 11 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:43,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3101 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:08:43,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-16 23:08:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 579. [2024-11-16 23:08:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 556 states have (on average 1.3669064748201438) internal successors, (760), 560 states have internal predecessors, (760), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 790 transitions. [2024-11-16 23:08:43,676 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 790 transitions. Word has length 73 [2024-11-16 23:08:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:43,677 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 790 transitions. [2024-11-16 23:08:43,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 790 transitions. [2024-11-16 23:08:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 23:08:43,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:43,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:43,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 23:08:43,678 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:43,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 404900879, now seen corresponding path program 1 times [2024-11-16 23:08:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:43,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282035867] [2024-11-16 23:08:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:43,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282035867] [2024-11-16 23:08:43,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282035867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:43,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:43,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:08:43,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340374325] [2024-11-16 23:08:43,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:43,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:08:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:43,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:08:43,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:43,978 INFO L87 Difference]: Start difference. First operand 579 states and 790 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:44,573 INFO L93 Difference]: Finished difference Result 1126 states and 1546 transitions. [2024-11-16 23:08:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:08:44,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 23:08:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:44,577 INFO L225 Difference]: With dead ends: 1126 [2024-11-16 23:08:44,577 INFO L226 Difference]: Without dead ends: 584 [2024-11-16 23:08:44,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:08:44,579 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 8 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:44,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3037 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:08:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-16 23:08:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 583. [2024-11-16 23:08:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 560 states have (on average 1.3660714285714286) internal successors, (765), 564 states have internal predecessors, (765), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 795 transitions. [2024-11-16 23:08:44,600 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 795 transitions. Word has length 73 [2024-11-16 23:08:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:44,600 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 795 transitions. [2024-11-16 23:08:44,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 795 transitions. [2024-11-16 23:08:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 23:08:44,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:44,602 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:44,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 23:08:44,602 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:44,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1373290688, now seen corresponding path program 1 times [2024-11-16 23:08:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:44,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153993596] [2024-11-16 23:08:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:44,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:45,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:45,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153993596] [2024-11-16 23:08:45,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153993596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:45,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:45,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 23:08:45,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801073502] [2024-11-16 23:08:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:45,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:08:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:08:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:08:45,066 INFO L87 Difference]: Start difference. First operand 583 states and 795 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:49,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 23:08:49,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:49,968 INFO L93 Difference]: Finished difference Result 1141 states and 1566 transitions. [2024-11-16 23:08:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:08:49,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 23:08:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:49,972 INFO L225 Difference]: With dead ends: 1141 [2024-11-16 23:08:49,972 INFO L226 Difference]: Without dead ends: 595 [2024-11-16 23:08:49,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:08:49,974 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 13 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:49,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4542 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1531 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-16 23:08:49,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-16 23:08:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 587. [2024-11-16 23:08:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 564 states have (on average 1.3652482269503545) internal successors, (770), 568 states have internal predecessors, (770), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 800 transitions. [2024-11-16 23:08:49,994 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 800 transitions. Word has length 74 [2024-11-16 23:08:49,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:49,994 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 800 transitions. [2024-11-16 23:08:49,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 800 transitions. [2024-11-16 23:08:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 23:08:49,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:49,996 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:49,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 23:08:49,996 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:49,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 847674894, now seen corresponding path program 1 times [2024-11-16 23:08:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666963934] [2024-11-16 23:08:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666963934] [2024-11-16 23:08:50,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666963934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:50,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 23:08:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832011188] [2024-11-16 23:08:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:50,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:08:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:08:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:08:50,487 INFO L87 Difference]: Start difference. First operand 587 states and 800 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:55,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 23:08:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:55,769 INFO L93 Difference]: Finished difference Result 1158 states and 1587 transitions. [2024-11-16 23:08:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:08:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 23:08:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:55,773 INFO L225 Difference]: With dead ends: 1158 [2024-11-16 23:08:55,773 INFO L226 Difference]: Without dead ends: 608 [2024-11-16 23:08:55,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:08:55,775 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 44 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:55,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 4046 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1355 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-16 23:08:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-16 23:08:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 585. [2024-11-16 23:08:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 562 states have (on average 1.3647686832740213) internal successors, (767), 566 states have internal predecessors, (767), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 797 transitions. [2024-11-16 23:08:55,792 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 797 transitions. Word has length 74 [2024-11-16 23:08:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:55,792 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 797 transitions. [2024-11-16 23:08:55,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 797 transitions. [2024-11-16 23:08:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 23:08:55,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:55,794 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:55,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 23:08:55,794 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:55,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:55,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2088779641, now seen corresponding path program 1 times [2024-11-16 23:08:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:55,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297973181] [2024-11-16 23:08:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:55,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297973181] [2024-11-16 23:08:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297973181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:56,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:56,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 23:08:56,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634518825] [2024-11-16 23:08:56,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:56,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 23:08:56,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 23:08:56,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:08:56,114 INFO L87 Difference]: Start difference. First operand 585 states and 797 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:57,196 INFO L93 Difference]: Finished difference Result 1150 states and 1575 transitions. [2024-11-16 23:08:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:08:57,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 23:08:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:57,200 INFO L225 Difference]: With dead ends: 1150 [2024-11-16 23:08:57,200 INFO L226 Difference]: Without dead ends: 602 [2024-11-16 23:08:57,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:08:57,202 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 26 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5170 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:57,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5170 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 23:08:57,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-16 23:08:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 591. [2024-11-16 23:08:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 568 states have (on average 1.3626760563380282) internal successors, (774), 572 states have internal predecessors, (774), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 804 transitions. [2024-11-16 23:08:57,218 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 804 transitions. Word has length 74 [2024-11-16 23:08:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:57,218 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 804 transitions. [2024-11-16 23:08:57,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 804 transitions. [2024-11-16 23:08:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 23:08:57,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:57,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:57,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 23:08:57,220 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:57,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1044723377, now seen corresponding path program 1 times [2024-11-16 23:08:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:57,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256983442] [2024-11-16 23:08:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:57,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:08:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:08:57,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:08:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256983442] [2024-11-16 23:08:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256983442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:08:57,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:08:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 23:08:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300942899] [2024-11-16 23:08:57,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:08:57,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 23:08:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:08:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 23:08:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 23:08:57,480 INFO L87 Difference]: Start difference. First operand 591 states and 804 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:08:58,438 INFO L93 Difference]: Finished difference Result 1171 states and 1602 transitions. [2024-11-16 23:08:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:08:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 23:08:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:08:58,443 INFO L225 Difference]: With dead ends: 1171 [2024-11-16 23:08:58,444 INFO L226 Difference]: Without dead ends: 617 [2024-11-16 23:08:58,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:08:58,446 INFO L432 NwaCegarLoop]: 613 mSDtfsCounter, 35 mSDsluCounter, 3477 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:08:58,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 4090 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 23:08:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-16 23:08:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 588. [2024-11-16 23:08:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 565 states have (on average 1.3646017699115045) internal successors, (771), 569 states have internal predecessors, (771), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 23:08:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 801 transitions. [2024-11-16 23:08:58,474 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 801 transitions. Word has length 74 [2024-11-16 23:08:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:08:58,474 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 801 transitions. [2024-11-16 23:08:58,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:08:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 801 transitions. [2024-11-16 23:08:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 23:08:58,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:08:58,476 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:08:58,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 23:08:58,476 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 23:08:58,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:08:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1216909820, now seen corresponding path program 1 times [2024-11-16 23:08:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:08:58,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222873045] [2024-11-16 23:08:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:08:58,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:08:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:09:41,840 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)