./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 20:39:57,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 20:39:58,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 20:39:58,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 20:39:58,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 20:39:58,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 20:39:58,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 20:39:58,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 20:39:58,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 20:39:58,042 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 20:39:58,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 20:39:58,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 20:39:58,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 20:39:58,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 20:39:58,044 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 20:39:58,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 20:39:58,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 20:39:58,046 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 20:39:58,046 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 20:39:58,046 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 20:39:58,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:39:58,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:39:58,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:39:58,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:39:58,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 20:39:58,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:39:58,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 20:39:58,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 20:39:58,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 20:39:58,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 20:39:58,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 20:39:58,048 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2025-01-09 20:39:58,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 20:39:58,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 20:39:58,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 20:39:58,285 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 20:39:58,286 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 20:39:58,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2025-01-09 20:39:59,416 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f111a2e3/f02def7aed2d4b078e31f474b12c84bd/FLAG07af2d58a [2025-01-09 20:39:59,707 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 20:39:59,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2025-01-09 20:39:59,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f111a2e3/f02def7aed2d4b078e31f474b12c84bd/FLAG07af2d58a [2025-01-09 20:39:59,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f111a2e3/f02def7aed2d4b078e31f474b12c84bd [2025-01-09 20:39:59,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 20:39:59,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 20:39:59,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 20:39:59,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 20:39:59,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 20:39:59,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:39:59" (1/1) ... [2025-01-09 20:39:59,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b75563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:39:59, skipping insertion in model container [2025-01-09 20:39:59,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:39:59" (1/1) ... [2025-01-09 20:40:00,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 20:40:00,368 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2025-01-09 20:40:00,376 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2025-01-09 20:40:00,442 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2025-01-09 20:40:00,443 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2025-01-09 20:40:00,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:40:00,465 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 20:40:00,490 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2025-01-09 20:40:00,495 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2025-01-09 20:40:00,549 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2025-01-09 20:40:00,550 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2025-01-09 20:40:00,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:40:00,607 INFO L204 MainTranslator]: Completed translation [2025-01-09 20:40:00,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00 WrapperNode [2025-01-09 20:40:00,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 20:40:00,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 20:40:00,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 20:40:00,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 20:40:00,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,722 INFO L138 Inliner]: procedures = 282, calls = 349, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1595 [2025-01-09 20:40:00,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 20:40:00,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 20:40:00,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 20:40:00,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 20:40:00,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,850 INFO L175 MemorySlicer]: Split 318 memory accesses to 4 slices as follows [34, 2, 12, 270]. 85 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [0, 2, 10, 0]. The 62 writes are split as follows [4, 0, 1, 57]. [2025-01-09 20:40:00,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,891 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 20:40:00,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 20:40:00,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 20:40:00,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 20:40:00,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (1/1) ... [2025-01-09 20:40:00,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:40:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:40:00,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 20:40:00,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 20:40:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 20:40:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 20:40:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 20:40:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 20:40:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 20:40:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 20:40:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-01-09 20:40:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-01-09 20:40:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 20:40:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 20:40:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 20:40:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 20:40:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 20:40:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 20:40:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 20:40:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-01-09 20:40:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-01-09 20:40:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 20:40:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 20:40:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 20:40:01,182 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 20:40:01,183 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 20:40:02,386 INFO L? ?]: Removed 365 outVars from TransFormulas that were not future-live. [2025-01-09 20:40:02,386 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 20:40:02,408 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 20:40:02,408 INFO L312 CfgBuilder]: Removed 35 assume(true) statements. [2025-01-09 20:40:02,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:40:02 BoogieIcfgContainer [2025-01-09 20:40:02,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 20:40:02,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 20:40:02,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 20:40:02,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 20:40:02,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 08:39:59" (1/3) ... [2025-01-09 20:40:02,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f04e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:40:02, skipping insertion in model container [2025-01-09 20:40:02,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:40:00" (2/3) ... [2025-01-09 20:40:02,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f04e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:40:02, skipping insertion in model container [2025-01-09 20:40:02,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:40:02" (3/3) ... [2025-01-09 20:40:02,417 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2025-01-09 20:40:02,428 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 20:40:02,429 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test6-2.i that has 5 procedures, 470 locations, 1 initial locations, 41 loop locations, and 4 error locations. [2025-01-09 20:40:02,476 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 20:40:02,484 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;@444e885a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 20:40:02,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-09 20:40:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 446 states have (on average 1.5896860986547086) internal successors, (709), 450 states have internal predecessors, (709), 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) [2025-01-09 20:40:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 20:40:02,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:02,495 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:40:02,496 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)] === [2025-01-09 20:40:02,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1883014248, now seen corresponding path program 1 times [2025-01-09 20:40:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675211076] [2025-01-09 20:40:02,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:02,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 20:40:02,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 20:40:02,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:02,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:02,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675211076] [2025-01-09 20:40:02,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675211076] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:02,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 20:40:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810070804] [2025-01-09 20:40:02,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:02,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 20:40:02,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:02,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 20:40:02,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 20:40:02,646 INFO L87 Difference]: Start difference. First operand has 470 states, 446 states have (on average 1.5896860986547086) internal successors, (709), 450 states have internal predecessors, (709), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:40:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:02,701 INFO L93 Difference]: Finished difference Result 936 states and 1489 transitions. [2025-01-09 20:40:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 20:40:02,703 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-09 20:40:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:02,713 INFO L225 Difference]: With dead ends: 936 [2025-01-09 20:40:02,713 INFO L226 Difference]: Without dead ends: 465 [2025-01-09 20:40:02,718 INFO L434 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 [2025-01-09 20:40:02,721 INFO L435 NwaCegarLoop]: 664 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:02,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:40:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-01-09 20:40:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2025-01-09 20:40:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 442 states have (on average 1.4276018099547512) internal successors, (631), 446 states have internal predecessors, (631), 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) [2025-01-09 20:40:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 661 transitions. [2025-01-09 20:40:02,780 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 661 transitions. Word has length 8 [2025-01-09 20:40:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:02,780 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 661 transitions. [2025-01-09 20:40:02,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:40:02,780 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 661 transitions. [2025-01-09 20:40:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 20:40:02,781 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:02,781 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:40:02,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 20:40:02,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-01-09 20:40:02,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1883663023, now seen corresponding path program 1 times [2025-01-09 20:40:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690452013] [2025-01-09 20:40:02,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:02,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 20:40:02,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 20:40:02,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:02,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:02,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690452013] [2025-01-09 20:40:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690452013] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:02,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:02,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:40:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799927882] [2025-01-09 20:40:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:02,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:40:02,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:02,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:40:02,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:40:02,934 INFO L87 Difference]: Start difference. First operand 465 states and 661 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-09 20:40:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:03,081 INFO L93 Difference]: Finished difference Result 1152 states and 1648 transitions. [2025-01-09 20:40:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 20:40:03,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-01-09 20:40:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:03,084 INFO L225 Difference]: With dead ends: 1152 [2025-01-09 20:40:03,086 INFO L226 Difference]: Without dead ends: 903 [2025-01-09 20:40:03,087 INFO L434 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 [2025-01-09 20:40:03,088 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 604 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:03,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2014 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:40:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2025-01-09 20:40:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 467. [2025-01-09 20:40:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 444 states have (on average 1.4256756756756757) internal successors, (633), 448 states have internal predecessors, (633), 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) [2025-01-09 20:40:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 663 transitions. [2025-01-09 20:40:03,113 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 663 transitions. Word has length 10 [2025-01-09 20:40:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:03,113 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 663 transitions. [2025-01-09 20:40:03,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-09 20:40:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 663 transitions. [2025-01-09 20:40:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 20:40:03,115 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:03,115 INFO L218 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] [2025-01-09 20:40:03,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 20:40:03,116 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)] === [2025-01-09 20:40:03,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash -546527626, now seen corresponding path program 1 times [2025-01-09 20:40:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365158058] [2025-01-09 20:40:03,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:03,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 20:40:03,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 20:40:03,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:03,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:03,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:03,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365158058] [2025-01-09 20:40:03,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365158058] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:03,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:03,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:40:03,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947074867] [2025-01-09 20:40:03,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:03,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:40:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:03,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:40:03,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:40:03,388 INFO L87 Difference]: Start difference. First operand 467 states and 663 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-01-09 20:40:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:03,467 INFO L93 Difference]: Finished difference Result 888 states and 1256 transitions. [2025-01-09 20:40:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 20:40:03,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2025-01-09 20:40:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:03,470 INFO L225 Difference]: With dead ends: 888 [2025-01-09 20:40:03,470 INFO L226 Difference]: Without dead ends: 425 [2025-01-09 20:40:03,471 INFO L434 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 [2025-01-09 20:40:03,474 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 30 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:03,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1661 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:40:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2025-01-09 20:40:03,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2025-01-09 20:40:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 402 states have (on average 1.3830845771144278) internal successors, (556), 406 states have internal predecessors, (556), 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) [2025-01-09 20:40:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 586 transitions. [2025-01-09 20:40:03,489 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 586 transitions. Word has length 66 [2025-01-09 20:40:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:03,489 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 586 transitions. [2025-01-09 20:40:03,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-01-09 20:40:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 586 transitions. [2025-01-09 20:40:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 20:40:03,491 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:03,491 INFO L218 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] [2025-01-09 20:40:03,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 20:40:03,491 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)] === [2025-01-09 20:40:03,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1513782506, now seen corresponding path program 1 times [2025-01-09 20:40:03,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:03,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401574020] [2025-01-09 20:40:03,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:03,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 20:40:03,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 20:40:03,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:03,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:03,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:03,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401574020] [2025-01-09 20:40:03,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401574020] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:03,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:03,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 20:40:03,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146415335] [2025-01-09 20:40:03,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:03,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 20:40:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:03,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 20:40:03,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:40:03,710 INFO L87 Difference]: Start difference. First operand 425 states and 586 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2025-01-09 20:40:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:03,758 INFO L93 Difference]: Finished difference Result 846 states and 1168 transitions. [2025-01-09 20:40:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 20:40:03,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 66 [2025-01-09 20:40:03,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:03,761 INFO L225 Difference]: With dead ends: 846 [2025-01-09 20:40:03,761 INFO L226 Difference]: Without dead ends: 425 [2025-01-09 20:40:03,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:40:03,764 INFO L435 NwaCegarLoop]: 572 mSDtfsCounter, 0 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:03,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1122 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:40:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2025-01-09 20:40:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2025-01-09 20:40:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 402 states have (on average 1.3756218905472637) internal successors, (553), 406 states have internal predecessors, (553), 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) [2025-01-09 20:40:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 583 transitions. [2025-01-09 20:40:03,780 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 583 transitions. Word has length 66 [2025-01-09 20:40:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:03,781 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 583 transitions. [2025-01-09 20:40:03,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2025-01-09 20:40:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 583 transitions. [2025-01-09 20:40:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 20:40:03,784 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:03,785 INFO L218 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] [2025-01-09 20:40:03,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 20:40:03,785 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)] === [2025-01-09 20:40:03,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -537201492, now seen corresponding path program 1 times [2025-01-09 20:40:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:03,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889725115] [2025-01-09 20:40:03,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:03,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:03,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 20:40:03,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 20:40:03,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:03,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:04,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:04,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889725115] [2025-01-09 20:40:04,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889725115] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:04,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:04,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 20:40:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645986481] [2025-01-09 20:40:04,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:04,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 20:40:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:04,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 20:40:04,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 20:40:04,141 INFO L87 Difference]: Start difference. First operand 425 states and 583 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-01-09 20:40:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:04,447 INFO L93 Difference]: Finished difference Result 851 states and 1170 transitions. [2025-01-09 20:40:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:40:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 66 [2025-01-09 20:40:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:04,449 INFO L225 Difference]: With dead ends: 851 [2025-01-09 20:40:04,449 INFO L226 Difference]: Without dead ends: 430 [2025-01-09 20:40:04,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:40:04,453 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 14 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:04,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2519 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:40:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2025-01-09 20:40:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 427. [2025-01-09 20:40:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 404 states have (on average 1.3737623762376239) internal successors, (555), 408 states have internal predecessors, (555), 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) [2025-01-09 20:40:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 585 transitions. [2025-01-09 20:40:04,466 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 585 transitions. Word has length 66 [2025-01-09 20:40:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:04,467 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 585 transitions. [2025-01-09 20:40:04,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-01-09 20:40:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 585 transitions. [2025-01-09 20:40:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-09 20:40:04,468 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:04,468 INFO L218 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] [2025-01-09 20:40:04,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 20:40:04,468 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)] === [2025-01-09 20:40:04,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2064890107, now seen corresponding path program 1 times [2025-01-09 20:40:04,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:04,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913419264] [2025-01-09 20:40:04,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:04,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-09 20:40:04,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 20:40:04,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:04,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:04,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913419264] [2025-01-09 20:40:04,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913419264] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:04,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:04,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 20:40:04,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577271841] [2025-01-09 20:40:04,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:04,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:40:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:04,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:40:04,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:40:04,683 INFO L87 Difference]: Start difference. First operand 427 states and 585 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2025-01-09 20:40:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:04,922 INFO L93 Difference]: Finished difference Result 855 states and 1174 transitions. [2025-01-09 20:40:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 20:40:04,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 67 [2025-01-09 20:40:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:04,924 INFO L225 Difference]: With dead ends: 855 [2025-01-09 20:40:04,924 INFO L226 Difference]: Without dead ends: 432 [2025-01-09 20:40:04,925 INFO L434 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 [2025-01-09 20:40:04,925 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 15 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:04,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3023 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:40:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2025-01-09 20:40:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 431. [2025-01-09 20:40:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 408 states have (on average 1.3725490196078431) internal successors, (560), 412 states have internal predecessors, (560), 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) [2025-01-09 20:40:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 590 transitions. [2025-01-09 20:40:04,934 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 590 transitions. Word has length 67 [2025-01-09 20:40:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:04,934 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 590 transitions. [2025-01-09 20:40:04,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2025-01-09 20:40:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 590 transitions. [2025-01-09 20:40:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-09 20:40:04,935 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:04,935 INFO L218 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] [2025-01-09 20:40:04,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 20:40:04,935 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)] === [2025-01-09 20:40:04,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -395471473, now seen corresponding path program 1 times [2025-01-09 20:40:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786320059] [2025-01-09 20:40:04,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:04,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-09 20:40:04,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 20:40:04,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:04,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:05,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786320059] [2025-01-09 20:40:05,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786320059] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:05,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:05,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:40:05,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190960597] [2025-01-09 20:40:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:05,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:40:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:05,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:40:05,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:40:05,177 INFO L87 Difference]: Start difference. First operand 431 states and 590 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2025-01-09 20:40:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:05,270 INFO L93 Difference]: Finished difference Result 858 states and 1176 transitions. [2025-01-09 20:40:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 20:40:05,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 67 [2025-01-09 20:40:05,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:05,273 INFO L225 Difference]: With dead ends: 858 [2025-01-09 20:40:05,273 INFO L226 Difference]: Without dead ends: 431 [2025-01-09 20:40:05,273 INFO L434 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 [2025-01-09 20:40:05,274 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 17 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:05,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1576 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:40:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-01-09 20:40:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2025-01-09 20:40:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 408 states have (on average 1.3700980392156863) internal successors, (559), 412 states have internal predecessors, (559), 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) [2025-01-09 20:40:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 589 transitions. [2025-01-09 20:40:05,284 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 589 transitions. Word has length 67 [2025-01-09 20:40:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:05,284 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 589 transitions. [2025-01-09 20:40:05,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2025-01-09 20:40:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 589 transitions. [2025-01-09 20:40:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 20:40:05,285 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:05,285 INFO L218 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] [2025-01-09 20:40:05,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 20:40:05,285 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)] === [2025-01-09 20:40:05,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1316778760, now seen corresponding path program 1 times [2025-01-09 20:40:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:05,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923706674] [2025-01-09 20:40:05,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:05,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:05,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 20:40:05,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 20:40:05,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:05,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:05,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:05,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923706674] [2025-01-09 20:40:05,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923706674] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:05,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:05,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 20:40:05,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662284254] [2025-01-09 20:40:05,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:05,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 20:40:05,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:05,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 20:40:05,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:40:05,605 INFO L87 Difference]: Start difference. First operand 431 states and 589 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2025-01-09 20:40:05,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:05,971 INFO L93 Difference]: Finished difference Result 871 states and 1195 transitions. [2025-01-09 20:40:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 20:40:05,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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 [2025-01-09 20:40:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:05,974 INFO L225 Difference]: With dead ends: 871 [2025-01-09 20:40:05,974 INFO L226 Difference]: Without dead ends: 444 [2025-01-09 20:40:05,974 INFO L434 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 [2025-01-09 20:40:05,975 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 33 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4079 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:05,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4079 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:40:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-01-09 20:40:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2025-01-09 20:40:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 418 states have (on average 1.3708133971291867) internal successors, (573), 422 states have internal predecessors, (573), 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) [2025-01-09 20:40:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 603 transitions. [2025-01-09 20:40:05,984 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 603 transitions. Word has length 68 [2025-01-09 20:40:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:05,984 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 603 transitions. [2025-01-09 20:40:05,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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) [2025-01-09 20:40:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 603 transitions. [2025-01-09 20:40:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 20:40:05,985 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:05,985 INFO L218 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] [2025-01-09 20:40:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 20:40:05,985 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)] === [2025-01-09 20:40:05,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash 295892241, now seen corresponding path program 1 times [2025-01-09 20:40:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925033383] [2025-01-09 20:40:05,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:05,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 20:40:06,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 20:40:06,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:06,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925033383] [2025-01-09 20:40:06,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925033383] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:06,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:06,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 20:40:06,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99383782] [2025-01-09 20:40:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:06,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 20:40:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:06,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 20:40:06,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 20:40:06,293 INFO L87 Difference]: Start difference. First operand 441 states and 603 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2025-01-09 20:40:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:06,613 INFO L93 Difference]: Finished difference Result 881 states and 1207 transitions. [2025-01-09 20:40:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 20:40:06,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 [2025-01-09 20:40:06,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:06,615 INFO L225 Difference]: With dead ends: 881 [2025-01-09 20:40:06,615 INFO L226 Difference]: Without dead ends: 444 [2025-01-09 20:40:06,616 INFO L434 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 [2025-01-09 20:40:06,616 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 27 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:06,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3571 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:40:06,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-01-09 20:40:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2025-01-09 20:40:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 421 states have (on average 1.368171021377672) internal successors, (576), 425 states have internal predecessors, (576), 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) [2025-01-09 20:40:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2025-01-09 20:40:06,626 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 68 [2025-01-09 20:40:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:06,626 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2025-01-09 20:40:06,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2025-01-09 20:40:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2025-01-09 20:40:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 20:40:06,627 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:06,627 INFO L218 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] [2025-01-09 20:40:06,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 20:40:06,627 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)] === [2025-01-09 20:40:06,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1457191505, now seen corresponding path program 1 times [2025-01-09 20:40:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594342534] [2025-01-09 20:40:06,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:06,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 20:40:06,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 20:40:06,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:06,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:06,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594342534] [2025-01-09 20:40:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594342534] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:06,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 20:40:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538323406] [2025-01-09 20:40:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:06,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 20:40:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:06,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 20:40:06,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 20:40:06,798 INFO L87 Difference]: Start difference. First operand 444 states and 606 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) [2025-01-09 20:40:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:06,996 INFO L93 Difference]: Finished difference Result 887 states and 1213 transitions. [2025-01-09 20:40:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:40:06,997 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 [2025-01-09 20:40:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:06,999 INFO L225 Difference]: With dead ends: 887 [2025-01-09 20:40:06,999 INFO L226 Difference]: Without dead ends: 447 [2025-01-09 20:40:07,000 INFO L434 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 [2025-01-09 20:40:07,000 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 8 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:07,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2541 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:40:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2025-01-09 20:40:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2025-01-09 20:40:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 424 states have (on average 1.365566037735849) internal successors, (579), 428 states have internal predecessors, (579), 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) [2025-01-09 20:40:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 609 transitions. [2025-01-09 20:40:07,010 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 609 transitions. Word has length 68 [2025-01-09 20:40:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:07,010 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 609 transitions. [2025-01-09 20:40:07,010 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) [2025-01-09 20:40:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 609 transitions. [2025-01-09 20:40:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-09 20:40:07,010 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:07,011 INFO L218 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] [2025-01-09 20:40:07,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 20:40:07,011 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)] === [2025-01-09 20:40:07,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash -924128962, now seen corresponding path program 1 times [2025-01-09 20:40:07,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:07,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871215967] [2025-01-09 20:40:07,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:07,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:07,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 20:40:07,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 20:40:07,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:07,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:07,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871215967] [2025-01-09 20:40:07,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871215967] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:07,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 20:40:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688558119] [2025-01-09 20:40:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:07,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 20:40:07,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:07,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 20:40:07,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:40:07,398 INFO L87 Difference]: Start difference. First operand 447 states and 609 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2025-01-09 20:40:08,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:08,210 INFO L93 Difference]: Finished difference Result 1295 states and 1777 transitions. [2025-01-09 20:40:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:08,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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 [2025-01-09 20:40:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:08,213 INFO L225 Difference]: With dead ends: 1295 [2025-01-09 20:40:08,213 INFO L226 Difference]: Without dead ends: 852 [2025-01-09 20:40:08,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-01-09 20:40:08,214 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 675 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:08,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 4145 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 20:40:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2025-01-09 20:40:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 485. [2025-01-09 20:40:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 462 states have (on average 1.3376623376623376) internal successors, (618), 466 states have internal predecessors, (618), 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) [2025-01-09 20:40:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 648 transitions. [2025-01-09 20:40:08,227 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 648 transitions. Word has length 69 [2025-01-09 20:40:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:08,227 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 648 transitions. [2025-01-09 20:40:08,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2025-01-09 20:40:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 648 transitions. [2025-01-09 20:40:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-09 20:40:08,227 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:08,227 INFO L218 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] [2025-01-09 20:40:08,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 20:40:08,227 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)] === [2025-01-09 20:40:08,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash -187398510, now seen corresponding path program 1 times [2025-01-09 20:40:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593011012] [2025-01-09 20:40:08,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:08,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 20:40:08,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 20:40:08,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:08,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593011012] [2025-01-09 20:40:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593011012] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:08,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:08,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 20:40:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194538598] [2025-01-09 20:40:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:08,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:40:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:08,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:40:08,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:40:08,426 INFO L87 Difference]: Start difference. First operand 485 states and 648 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) [2025-01-09 20:40:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:08,686 INFO L93 Difference]: Finished difference Result 933 states and 1261 transitions. [2025-01-09 20:40:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 20:40:08,687 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 [2025-01-09 20:40:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:08,689 INFO L225 Difference]: With dead ends: 933 [2025-01-09 20:40:08,689 INFO L226 Difference]: Without dead ends: 490 [2025-01-09 20:40:08,690 INFO L434 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 [2025-01-09 20:40:08,691 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 12 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:08,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3030 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:40:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2025-01-09 20:40:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 485. [2025-01-09 20:40:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 462 states have (on average 1.3376623376623376) internal successors, (618), 466 states have internal predecessors, (618), 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) [2025-01-09 20:40:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 648 transitions. [2025-01-09 20:40:08,705 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 648 transitions. Word has length 69 [2025-01-09 20:40:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:08,705 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 648 transitions. [2025-01-09 20:40:08,705 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) [2025-01-09 20:40:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 648 transitions. [2025-01-09 20:40:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 20:40:08,706 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:08,706 INFO L218 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] [2025-01-09 20:40:08,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 20:40:08,706 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)] === [2025-01-09 20:40:08,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash -260522659, now seen corresponding path program 1 times [2025-01-09 20:40:08,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:08,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097226814] [2025-01-09 20:40:08,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:08,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:08,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 20:40:08,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 20:40:08,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:08,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:08,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:08,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097226814] [2025-01-09 20:40:08,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097226814] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:08,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:08,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 20:40:08,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713858390] [2025-01-09 20:40:08,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:08,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 20:40:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:08,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 20:40:08,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:40:08,888 INFO L87 Difference]: Start difference. First operand 485 states and 648 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) [2025-01-09 20:40:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:09,130 INFO L93 Difference]: Finished difference Result 938 states and 1267 transitions. [2025-01-09 20:40:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 20:40:09,131 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 [2025-01-09 20:40:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:09,133 INFO L225 Difference]: With dead ends: 938 [2025-01-09 20:40:09,133 INFO L226 Difference]: Without dead ends: 495 [2025-01-09 20:40:09,134 INFO L434 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 [2025-01-09 20:40:09,134 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 20 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:09,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3611 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:40:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2025-01-09 20:40:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2025-01-09 20:40:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 465 states have (on average 1.3376344086021505) internal successors, (622), 469 states have internal predecessors, (622), 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) [2025-01-09 20:40:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 652 transitions. [2025-01-09 20:40:09,146 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 652 transitions. Word has length 70 [2025-01-09 20:40:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:09,146 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 652 transitions. [2025-01-09 20:40:09,146 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) [2025-01-09 20:40:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 652 transitions. [2025-01-09 20:40:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 20:40:09,146 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:09,146 INFO L218 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] [2025-01-09 20:40:09,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 20:40:09,147 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)] === [2025-01-09 20:40:09,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1876718145, now seen corresponding path program 1 times [2025-01-09 20:40:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886633635] [2025-01-09 20:40:09,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:09,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 20:40:09,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 20:40:09,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:09,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:09,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886633635] [2025-01-09 20:40:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886633635] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:09,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:09,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 20:40:09,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224656691] [2025-01-09 20:40:09,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:09,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 20:40:09,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:09,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 20:40:09,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:40:09,388 INFO L87 Difference]: Start difference. First operand 488 states and 652 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) [2025-01-09 20:40:09,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:09,765 INFO L93 Difference]: Finished difference Result 948 states and 1279 transitions. [2025-01-09 20:40:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:09,765 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 [2025-01-09 20:40:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:09,767 INFO L225 Difference]: With dead ends: 948 [2025-01-09 20:40:09,767 INFO L226 Difference]: Without dead ends: 502 [2025-01-09 20:40:09,768 INFO L434 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 [2025-01-09 20:40:09,768 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 37 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:09,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 4035 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:40:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-01-09 20:40:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 488. [2025-01-09 20:40:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 465 states have (on average 1.3376344086021505) internal successors, (622), 469 states have internal predecessors, (622), 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) [2025-01-09 20:40:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 652 transitions. [2025-01-09 20:40:09,780 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 652 transitions. Word has length 70 [2025-01-09 20:40:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:09,780 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 652 transitions. [2025-01-09 20:40:09,780 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) [2025-01-09 20:40:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 652 transitions. [2025-01-09 20:40:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 20:40:09,781 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:09,781 INFO L218 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] [2025-01-09 20:40:09,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 20:40:09,781 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)] === [2025-01-09 20:40:09,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:09,781 INFO L85 PathProgramCache]: Analyzing trace with hash -495464894, now seen corresponding path program 1 times [2025-01-09 20:40:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054662068] [2025-01-09 20:40:09,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:09,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 20:40:09,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 20:40:09,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:09,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054662068] [2025-01-09 20:40:09,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054662068] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:09,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 20:40:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006278694] [2025-01-09 20:40:09,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:09,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 20:40:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:09,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 20:40:09,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-01-09 20:40:09,999 INFO L87 Difference]: Start difference. First operand 488 states and 652 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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) [2025-01-09 20:40:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:10,348 INFO L93 Difference]: Finished difference Result 950 states and 1284 transitions. [2025-01-09 20:40:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 [2025-01-09 20:40:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:10,351 INFO L225 Difference]: With dead ends: 950 [2025-01-09 20:40:10,351 INFO L226 Difference]: Without dead ends: 504 [2025-01-09 20:40:10,352 INFO L434 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 [2025-01-09 20:40:10,352 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 23 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:10,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4099 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:40:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2025-01-09 20:40:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2025-01-09 20:40:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 475 states have (on average 1.3347368421052632) internal successors, (634), 479 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) [2025-01-09 20:40:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 664 transitions. [2025-01-09 20:40:10,364 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 664 transitions. Word has length 71 [2025-01-09 20:40:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:10,364 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 664 transitions. [2025-01-09 20:40:10,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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) [2025-01-09 20:40:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 664 transitions. [2025-01-09 20:40:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 20:40:10,365 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:10,365 INFO L218 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] [2025-01-09 20:40:10,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 20:40:10,365 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)] === [2025-01-09 20:40:10,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1334490590, now seen corresponding path program 1 times [2025-01-09 20:40:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:10,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143734029] [2025-01-09 20:40:10,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:10,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:10,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 20:40:10,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 20:40:10,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:10,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143734029] [2025-01-09 20:40:10,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143734029] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:10,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:10,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 20:40:10,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379858717] [2025-01-09 20:40:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:10,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 20:40:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:10,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 20:40:10,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-01-09 20:40:10,582 INFO L87 Difference]: Start difference. First operand 498 states and 664 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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) [2025-01-09 20:40:10,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:10,950 INFO L93 Difference]: Finished difference Result 970 states and 1308 transitions. [2025-01-09 20:40:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:10,951 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 [2025-01-09 20:40:10,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:10,953 INFO L225 Difference]: With dead ends: 970 [2025-01-09 20:40:10,954 INFO L226 Difference]: Without dead ends: 514 [2025-01-09 20:40:10,954 INFO L434 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 [2025-01-09 20:40:10,955 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 17 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4547 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:10,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4547 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:40:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2025-01-09 20:40:10,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 501. [2025-01-09 20:40:10,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 478 states have (on average 1.3347280334728033) internal successors, (638), 482 states have internal predecessors, (638), 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) [2025-01-09 20:40:10,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 668 transitions. [2025-01-09 20:40:10,970 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 668 transitions. Word has length 71 [2025-01-09 20:40:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:10,971 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 668 transitions. [2025-01-09 20:40:10,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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) [2025-01-09 20:40:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 668 transitions. [2025-01-09 20:40:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 20:40:10,972 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:10,972 INFO L218 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] [2025-01-09 20:40:10,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 20:40:10,972 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)] === [2025-01-09 20:40:10,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:10,973 INFO L85 PathProgramCache]: Analyzing trace with hash -163562146, now seen corresponding path program 1 times [2025-01-09 20:40:10,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:10,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511133586] [2025-01-09 20:40:10,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:10,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:10,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 20:40:11,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 20:40:11,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:11,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:11,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511133586] [2025-01-09 20:40:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511133586] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 20:40:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392306779] [2025-01-09 20:40:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:11,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:40:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:11,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:40:11,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:40:11,194 INFO L87 Difference]: Start difference. First operand 501 states and 668 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) [2025-01-09 20:40:11,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:11,423 INFO L93 Difference]: Finished difference Result 965 states and 1298 transitions. [2025-01-09 20:40:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 20:40:11,424 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 [2025-01-09 20:40:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:11,426 INFO L225 Difference]: With dead ends: 965 [2025-01-09 20:40:11,426 INFO L226 Difference]: Without dead ends: 506 [2025-01-09 20:40:11,427 INFO L434 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 [2025-01-09 20:40:11,427 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 11 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:11,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3053 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:40:11,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-01-09 20:40:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 501. [2025-01-09 20:40:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 478 states have (on average 1.3326359832635983) internal successors, (637), 482 states have internal predecessors, (637), 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) [2025-01-09 20:40:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 667 transitions. [2025-01-09 20:40:11,442 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 667 transitions. Word has length 71 [2025-01-09 20:40:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:11,442 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 667 transitions. [2025-01-09 20:40:11,442 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) [2025-01-09 20:40:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 667 transitions. [2025-01-09 20:40:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 20:40:11,444 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:11,444 INFO L218 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] [2025-01-09 20:40:11,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-09 20:40:11,445 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)] === [2025-01-09 20:40:11,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1449108855, now seen corresponding path program 1 times [2025-01-09 20:40:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667578667] [2025-01-09 20:40:11,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:11,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 20:40:11,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 20:40:11,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:11,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667578667] [2025-01-09 20:40:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667578667] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:11,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 20:40:11,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710080446] [2025-01-09 20:40:11,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:11,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:40:11,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:11,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:40:11,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:40:11,616 INFO L87 Difference]: Start difference. First operand 501 states and 667 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) [2025-01-09 20:40:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:11,871 INFO L93 Difference]: Finished difference Result 963 states and 1296 transitions. [2025-01-09 20:40:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 20:40:11,872 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 [2025-01-09 20:40:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:11,876 INFO L225 Difference]: With dead ends: 963 [2025-01-09 20:40:11,876 INFO L226 Difference]: Without dead ends: 504 [2025-01-09 20:40:11,877 INFO L434 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 [2025-01-09 20:40:11,877 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 8 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:11,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3012 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:40:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2025-01-09 20:40:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2025-01-09 20:40:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 481 states have (on average 1.3305613305613306) internal successors, (640), 485 states have internal predecessors, (640), 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) [2025-01-09 20:40:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 670 transitions. [2025-01-09 20:40:11,904 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 670 transitions. Word has length 71 [2025-01-09 20:40:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:11,904 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 670 transitions. [2025-01-09 20:40:11,904 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) [2025-01-09 20:40:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 670 transitions. [2025-01-09 20:40:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 20:40:11,908 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:11,908 INFO L218 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] [2025-01-09 20:40:11,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-09 20:40:11,908 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)] === [2025-01-09 20:40:11,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:11,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2011256672, now seen corresponding path program 1 times [2025-01-09 20:40:11,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:11,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343429788] [2025-01-09 20:40:11,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:11,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:11,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 20:40:11,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 20:40:11,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:11,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:12,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:12,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343429788] [2025-01-09 20:40:12,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343429788] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:12,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:12,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 20:40:12,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529407181] [2025-01-09 20:40:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:12,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 20:40:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:12,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 20:40:12,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 20:40:12,231 INFO L87 Difference]: Start difference. First operand 504 states and 670 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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) [2025-01-09 20:40:14,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 20:40:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:14,408 INFO L93 Difference]: Finished difference Result 978 states and 1315 transitions. [2025-01-09 20:40:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:14,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 [2025-01-09 20:40:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:14,411 INFO L225 Difference]: With dead ends: 978 [2025-01-09 20:40:14,411 INFO L226 Difference]: Without dead ends: 516 [2025-01-09 20:40:14,412 INFO L434 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 [2025-01-09 20:40:14,412 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 13 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:14,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4059 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-01-09 20:40:14,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-01-09 20:40:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 508. [2025-01-09 20:40:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 485 states have (on average 1.3298969072164948) internal successors, (645), 489 states have internal predecessors, (645), 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) [2025-01-09 20:40:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 675 transitions. [2025-01-09 20:40:14,430 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 675 transitions. Word has length 72 [2025-01-09 20:40:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:14,430 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 675 transitions. [2025-01-09 20:40:14,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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) [2025-01-09 20:40:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 675 transitions. [2025-01-09 20:40:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 20:40:14,430 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:14,430 INFO L218 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] [2025-01-09 20:40:14,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-09 20:40:14,430 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)] === [2025-01-09 20:40:14,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash -355136947, now seen corresponding path program 1 times [2025-01-09 20:40:14,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:14,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764939068] [2025-01-09 20:40:14,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:14,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:14,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 20:40:14,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 20:40:14,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:14,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:14,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764939068] [2025-01-09 20:40:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764939068] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:14,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:14,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 20:40:14,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238747600] [2025-01-09 20:40:14,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:14,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 20:40:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:14,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 20:40:14,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-09 20:40:14,655 INFO L87 Difference]: Start difference. First operand 508 states and 675 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2025-01-09 20:40:15,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:15,041 INFO L93 Difference]: Finished difference Result 987 states and 1325 transitions. [2025-01-09 20:40:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:15,042 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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 [2025-01-09 20:40:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:15,044 INFO L225 Difference]: With dead ends: 987 [2025-01-09 20:40:15,044 INFO L226 Difference]: Without dead ends: 521 [2025-01-09 20:40:15,045 INFO L434 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 [2025-01-09 20:40:15,045 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 40 mSDsluCounter, 4019 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 4577 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:15,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 4577 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 20:40:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-01-09 20:40:15,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 511. [2025-01-09 20:40:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 488 states have (on average 1.3278688524590163) internal successors, (648), 492 states have internal predecessors, (648), 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) [2025-01-09 20:40:15,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 678 transitions. [2025-01-09 20:40:15,056 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 678 transitions. Word has length 72 [2025-01-09 20:40:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:15,056 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 678 transitions. [2025-01-09 20:40:15,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2025-01-09 20:40:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 678 transitions. [2025-01-09 20:40:15,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 20:40:15,056 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:15,056 INFO L218 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] [2025-01-09 20:40:15,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-09 20:40:15,057 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)] === [2025-01-09 20:40:15,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1389665468, now seen corresponding path program 1 times [2025-01-09 20:40:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7996315] [2025-01-09 20:40:15,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:15,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 20:40:15,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 20:40:15,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:15,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:15,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:15,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7996315] [2025-01-09 20:40:15,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7996315] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:15,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:15,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 20:40:15,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089718531] [2025-01-09 20:40:15,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:15,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 20:40:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:15,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 20:40:15,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 20:40:15,432 INFO L87 Difference]: Start difference. First operand 511 states and 678 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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) [2025-01-09 20:40:17,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 20:40:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:18,038 INFO L93 Difference]: Finished difference Result 990 states and 1325 transitions. [2025-01-09 20:40:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:18,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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 [2025-01-09 20:40:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:18,044 INFO L225 Difference]: With dead ends: 990 [2025-01-09 20:40:18,044 INFO L226 Difference]: Without dead ends: 521 [2025-01-09 20:40:18,045 INFO L434 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 [2025-01-09 20:40:18,047 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 44 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:18,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 4005 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-01-09 20:40:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-01-09 20:40:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 512. [2025-01-09 20:40:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 489 states have (on average 1.32719836400818) internal successors, (649), 493 states have internal predecessors, (649), 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) [2025-01-09 20:40:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 679 transitions. [2025-01-09 20:40:18,061 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 679 transitions. Word has length 72 [2025-01-09 20:40:18,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:18,062 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 679 transitions. [2025-01-09 20:40:18,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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) [2025-01-09 20:40:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 679 transitions. [2025-01-09 20:40:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 20:40:18,062 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:18,062 INFO L218 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] [2025-01-09 20:40:18,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 20:40:18,062 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)] === [2025-01-09 20:40:18,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1068838908, now seen corresponding path program 1 times [2025-01-09 20:40:18,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:18,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847816957] [2025-01-09 20:40:18,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:18,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:18,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 20:40:18,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 20:40:18,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:18,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:40:18,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:40:18,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847816957] [2025-01-09 20:40:18,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847816957] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:40:18,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:40:18,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 20:40:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961360845] [2025-01-09 20:40:18,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:40:18,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 20:40:18,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:40:18,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 20:40:18,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:40:18,257 INFO L87 Difference]: Start difference. First operand 512 states and 679 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) [2025-01-09 20:40:18,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:40:18,643 INFO L93 Difference]: Finished difference Result 995 states and 1332 transitions. [2025-01-09 20:40:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:40:18,644 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 [2025-01-09 20:40:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:40:18,646 INFO L225 Difference]: With dead ends: 995 [2025-01-09 20:40:18,646 INFO L226 Difference]: Without dead ends: 525 [2025-01-09 20:40:18,647 INFO L434 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 [2025-01-09 20:40:18,648 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 33 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:40:18,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4035 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:40:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-01-09 20:40:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 509. [2025-01-09 20:40:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 486 states have (on average 1.3292181069958848) internal successors, (646), 490 states have internal predecessors, (646), 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) [2025-01-09 20:40:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 676 transitions. [2025-01-09 20:40:18,659 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 676 transitions. Word has length 72 [2025-01-09 20:40:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:40:18,659 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 676 transitions. [2025-01-09 20:40:18,659 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) [2025-01-09 20:40:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 676 transitions. [2025-01-09 20:40:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 20:40:18,659 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:40:18,659 INFO L218 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] [2025-01-09 20:40:18,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-09 20:40:18,659 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-01-09 20:40:18,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:40:18,660 INFO L85 PathProgramCache]: Analyzing trace with hash 465847704, now seen corresponding path program 1 times [2025-01-09 20:40:18,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:40:18,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013539112] [2025-01-09 20:40:18,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:40:18,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:40:18,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 20:40:18,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 20:40:18,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:40:18,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:40:33,979 WARN L286 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-09 20:41:08,578 WARN L286 SmtUtils]: Spent 12.01s 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) [2025-01-09 20:41:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:41:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:41:20,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013539112] [2025-01-09 20:41:20,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013539112] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:41:20,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:41:20,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 20:41:20,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274882961] [2025-01-09 20:41:20,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:41:20,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 20:41:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:41:20,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 20:41:20,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=82, Unknown=6, NotChecked=0, Total=110 [2025-01-09 20:41:20,629 INFO L87 Difference]: Start difference. First operand 509 states and 676 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2025-01-09 20:41:26,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 20:41:30,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 20:41:34,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []