./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:24:37,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:24:37,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 21:24:37,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:24:37,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:24:37,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:24:37,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:24:37,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:24:37,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 21:24:37,745 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 21:24:37,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:24:37,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:24:37,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:24:37,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:24:37,746 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:24:37,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:24:37,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:24:37,747 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:24:37,748 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:24:37,748 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:24:37,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:24:37,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 21:24:37,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:24:37,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:24:37,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:24:37,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:24:37,749 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/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 -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2025-03-08 21:24:37,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:24:38,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:24:38,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:24:38,012 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:24:38,012 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:24:38,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2025-03-08 21:24:39,146 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbbc8825/f8fba121a3d94f989d8fca76ed4cbff6/FLAG8fa340a00 [2025-03-08 21:24:39,562 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:24:39,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2025-03-08 21:24:39,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbbc8825/f8fba121a3d94f989d8fca76ed4cbff6/FLAG8fa340a00 [2025-03-08 21:24:39,725 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbbc8825/f8fba121a3d94f989d8fca76ed4cbff6 [2025-03-08 21:24:39,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:24:39,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:24:39,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:24:39,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:24:39,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:24:39,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:24:39" (1/1) ... [2025-03-08 21:24:39,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4982fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:39, skipping insertion in model container [2025-03-08 21:24:39,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:24:39" (1/1) ... [2025-03-08 21:24:39,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:24:40,068 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2025-03-08 21:24:40,077 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2025-03-08 21:24:40,148 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2025-03-08 21:24:40,148 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2025-03-08 21:24:40,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:24:40,161 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:24:40,196 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2025-03-08 21:24:40,197 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2025-03-08 21:24:40,252 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2025-03-08 21:24:40,253 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2025-03-08 21:24:40,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:24:40,300 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:24:40,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40 WrapperNode [2025-03-08 21:24:40,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:24:40,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:24:40,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:24:40,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:24:40,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,364 INFO L138 Inliner]: procedures = 282, calls = 296, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1432 [2025-03-08 21:24:40,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:24:40,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:24:40,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:24:40,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:24:40,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,435 INFO L175 MemorySlicer]: Split 268 memory accesses to 4 slices as follows [2, 34, 12, 220]. 82 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 10, 0]. The 54 writes are split as follows [0, 4, 1, 49]. [2025-03-08 21:24:40,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,463 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:24:40,479 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:24:40,479 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:24:40,479 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:24:40,480 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (1/1) ... [2025-03-08 21:24:40,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:24:40,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:24:40,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 21:24:40,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 21:24:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 21:24:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 21:24:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 21:24:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 21:24:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 21:24:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:24:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-03-08 21:24:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 21:24:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:24:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-03-08 21:24:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-03-08 21:24:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 21:24:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:24:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:24:40,717 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:24:40,718 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:24:40,764 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2025-03-08 21:24:41,798 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2025-03-08 21:24:41,800 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2025-03-08 21:24:41,800 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-08 21:24:41,873 INFO L? ?]: Removed 335 outVars from TransFormulas that were not future-live. [2025-03-08 21:24:41,874 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:24:41,934 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:24:41,934 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-08 21:24:41,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:24:41 BoogieIcfgContainer [2025-03-08 21:24:41,934 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:24:41,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:24:41,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:24:41,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:24:41,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:24:39" (1/3) ... [2025-03-08 21:24:41,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4965a5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:24:41, skipping insertion in model container [2025-03-08 21:24:41,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:24:40" (2/3) ... [2025-03-08 21:24:41,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4965a5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:24:41, skipping insertion in model container [2025-03-08 21:24:41,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:24:41" (3/3) ... [2025-03-08 21:24:41,943 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2025-03-08 21:24:41,953 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:24:41,954 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test6-1.i that has 5 procedures, 429 locations, 1 initial locations, 34 loop locations, and 4 error locations. [2025-03-08 21:24:41,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:24:42,008 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;@89fc37c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:24:42,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-08 21:24:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 407 states have (on average 1.5945945945945945) internal successors, (649), 411 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 21:24:42,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 21:24:42,017 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:42,017 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:24:42,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:24:42,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1073890916, now seen corresponding path program 1 times [2025-03-08 21:24:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:42,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007915618] [2025-03-08 21:24:42,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:42,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 21:24:42,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 21:24:42,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:42,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007915618] [2025-03-08 21:24:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007915618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:42,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:42,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:24:42,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006396451] [2025-03-08 21:24:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:42,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 21:24:42,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:42,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 21:24:42,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 21:24:42,188 INFO L87 Difference]: Start difference. First operand has 429 states, 407 states have (on average 1.5945945945945945) internal successors, (649), 411 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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) [2025-03-08 21:24:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:42,292 INFO L93 Difference]: Finished difference Result 854 states and 1359 transitions. [2025-03-08 21:24:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 21:24:42,297 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 [2025-03-08 21:24:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:42,304 INFO L225 Difference]: With dead ends: 854 [2025-03-08 21:24:42,304 INFO L226 Difference]: Without dead ends: 423 [2025-03-08 21:24:42,307 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 [2025-03-08 21:24:42,309 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:42,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:24:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-03-08 21:24:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2025-03-08 21:24:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 402 states have (on average 1.4402985074626866) internal successors, (579), 407 states have internal predecessors, (579), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 604 transitions. [2025-03-08 21:24:42,349 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 604 transitions. Word has length 8 [2025-03-08 21:24:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:42,349 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 604 transitions. [2025-03-08 21:24:42,349 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) [2025-03-08 21:24:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 604 transitions. [2025-03-08 21:24:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 21:24:42,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:42,350 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:24:42,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:24:42,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:24:42,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2034121717, now seen corresponding path program 1 times [2025-03-08 21:24:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:42,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827367426] [2025-03-08 21:24:42,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:42,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:42,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 21:24:42,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 21:24:42,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:42,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:42,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:42,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827367426] [2025-03-08 21:24:42,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827367426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:42,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:42,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:24:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104445607] [2025-03-08 21:24:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:42,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:24:42,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:42,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:24:42,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:24:42,540 INFO L87 Difference]: Start difference. First operand 423 states and 604 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) [2025-03-08 21:24:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:42,894 INFO L93 Difference]: Finished difference Result 1029 states and 1480 transitions. [2025-03-08 21:24:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:24:42,896 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 [2025-03-08 21:24:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:42,901 INFO L225 Difference]: With dead ends: 1029 [2025-03-08 21:24:42,901 INFO L226 Difference]: Without dead ends: 819 [2025-03-08 21:24:42,902 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 [2025-03-08 21:24:42,902 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 552 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:42,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1611 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:24:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2025-03-08 21:24:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 425. [2025-03-08 21:24:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 404 states have (on average 1.438118811881188) internal successors, (581), 409 states have internal predecessors, (581), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 606 transitions. [2025-03-08 21:24:42,926 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 606 transitions. Word has length 10 [2025-03-08 21:24:42,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:42,926 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 606 transitions. [2025-03-08 21:24:42,926 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) [2025-03-08 21:24:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 606 transitions. [2025-03-08 21:24:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 21:24:42,928 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:42,928 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] [2025-03-08 21:24:42,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:24:42,928 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)] === [2025-03-08 21:24:42,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash -577258923, now seen corresponding path program 1 times [2025-03-08 21:24:42,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:42,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011318654] [2025-03-08 21:24:42,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:42,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 21:24:42,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 21:24:42,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:42,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011318654] [2025-03-08 21:24:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011318654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:43,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:43,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:24:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462381388] [2025-03-08 21:24:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:43,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:24:43,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:43,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:24:43,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:24:43,188 INFO L87 Difference]: Start difference. First operand 425 states and 606 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-08 21:24:43,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:43,353 INFO L93 Difference]: Finished difference Result 849 states and 1211 transitions. [2025-03-08 21:24:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:24:43,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 64 [2025-03-08 21:24:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:43,355 INFO L225 Difference]: With dead ends: 849 [2025-03-08 21:24:43,355 INFO L226 Difference]: Without dead ends: 428 [2025-03-08 21:24:43,356 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 [2025-03-08 21:24:43,356 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 105 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:43,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1521 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:24:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2025-03-08 21:24:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 425. [2025-03-08 21:24:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 404 states have (on average 1.4207920792079207) internal successors, (574), 409 states have internal predecessors, (574), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 599 transitions. [2025-03-08 21:24:43,369 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 599 transitions. Word has length 64 [2025-03-08 21:24:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:43,369 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 599 transitions. [2025-03-08 21:24:43,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-08 21:24:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 599 transitions. [2025-03-08 21:24:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 21:24:43,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:43,371 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] [2025-03-08 21:24:43,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:24:43,371 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)] === [2025-03-08 21:24:43,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1694587505, now seen corresponding path program 1 times [2025-03-08 21:24:43,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:43,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626777032] [2025-03-08 21:24:43,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:43,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:43,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 21:24:43,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 21:24:43,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:43,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:43,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626777032] [2025-03-08 21:24:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626777032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:43,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:43,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 21:24:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923515230] [2025-03-08 21:24:43,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:43,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:24:43,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:43,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:24:43,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:24:43,780 INFO L87 Difference]: Start difference. First operand 425 states and 599 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2025-03-08 21:24:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:44,412 INFO L93 Difference]: Finished difference Result 880 states and 1239 transitions. [2025-03-08 21:24:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:24:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 64 [2025-03-08 21:24:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:44,415 INFO L225 Difference]: With dead ends: 880 [2025-03-08 21:24:44,416 INFO L226 Difference]: Without dead ends: 459 [2025-03-08 21:24:44,417 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 [2025-03-08 21:24:44,419 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 14 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:44,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2230 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:24:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2025-03-08 21:24:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 452. [2025-03-08 21:24:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 431 states have (on average 1.408352668213457) internal successors, (607), 436 states have internal predecessors, (607), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 632 transitions. [2025-03-08 21:24:44,435 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 632 transitions. Word has length 64 [2025-03-08 21:24:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:44,436 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 632 transitions. [2025-03-08 21:24:44,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2025-03-08 21:24:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 632 transitions. [2025-03-08 21:24:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 21:24:44,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:44,437 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] [2025-03-08 21:24:44,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:24:44,437 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)] === [2025-03-08 21:24:44,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash -245950012, now seen corresponding path program 1 times [2025-03-08 21:24:44,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:44,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123570974] [2025-03-08 21:24:44,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:44,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 21:24:44,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 21:24:44,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:44,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:44,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123570974] [2025-03-08 21:24:44,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123570974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:44,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:44,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:24:44,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014495149] [2025-03-08 21:24:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:44,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:24:44,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:44,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:24:44,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:24:44,724 INFO L87 Difference]: Start difference. First operand 452 states and 632 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-08 21:24:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:44,942 INFO L93 Difference]: Finished difference Result 909 states and 1274 transitions. [2025-03-08 21:24:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:24:44,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 65 [2025-03-08 21:24:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:44,947 INFO L225 Difference]: With dead ends: 909 [2025-03-08 21:24:44,947 INFO L226 Difference]: Without dead ends: 461 [2025-03-08 21:24:44,948 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 [2025-03-08 21:24:44,948 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 17 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:44,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1474 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:24:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2025-03-08 21:24:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 453. [2025-03-08 21:24:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 432 states have (on average 1.4074074074074074) internal successors, (608), 437 states have internal predecessors, (608), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 633 transitions. [2025-03-08 21:24:44,962 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 633 transitions. Word has length 65 [2025-03-08 21:24:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:44,962 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 633 transitions. [2025-03-08 21:24:44,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-08 21:24:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 633 transitions. [2025-03-08 21:24:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 21:24:44,963 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:44,963 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] [2025-03-08 21:24:44,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:24:44,963 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)] === [2025-03-08 21:24:44,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash 920060683, now seen corresponding path program 1 times [2025-03-08 21:24:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172502659] [2025-03-08 21:24:44,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:44,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 21:24:45,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 21:24:45,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:45,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:45,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:45,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172502659] [2025-03-08 21:24:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172502659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:45,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:45,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:24:45,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790559844] [2025-03-08 21:24:45,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:45,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:24:45,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:45,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:24:45,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:24:45,205 INFO L87 Difference]: Start difference. First operand 453 states and 633 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2025-03-08 21:24:45,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:45,688 INFO L93 Difference]: Finished difference Result 914 states and 1281 transitions. [2025-03-08 21:24:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:24:45,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 65 [2025-03-08 21:24:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:45,691 INFO L225 Difference]: With dead ends: 914 [2025-03-08 21:24:45,691 INFO L226 Difference]: Without dead ends: 465 [2025-03-08 21:24:45,692 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 [2025-03-08 21:24:45,693 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 14 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:45,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2680 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:24:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-03-08 21:24:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 462. [2025-03-08 21:24:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 441 states have (on average 1.4081632653061225) internal successors, (621), 446 states have internal predecessors, (621), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 646 transitions. [2025-03-08 21:24:45,710 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 646 transitions. Word has length 65 [2025-03-08 21:24:45,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:45,710 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 646 transitions. [2025-03-08 21:24:45,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2025-03-08 21:24:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 646 transitions. [2025-03-08 21:24:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:24:45,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:45,714 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] [2025-03-08 21:24:45,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 21:24:45,715 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)] === [2025-03-08 21:24:45,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:45,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1788179634, now seen corresponding path program 1 times [2025-03-08 21:24:45,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:45,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072621405] [2025-03-08 21:24:45,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:45,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:24:45,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:24:45,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:45,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:45,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:45,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072621405] [2025-03-08 21:24:45,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072621405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:45,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:45,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 21:24:45,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381704744] [2025-03-08 21:24:45,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:45,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:24:45,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:45,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:24:45,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:24:45,914 INFO L87 Difference]: Start difference. First operand 462 states and 646 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) [2025-03-08 21:24:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:46,350 INFO L93 Difference]: Finished difference Result 923 states and 1293 transitions. [2025-03-08 21:24:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:24:46,350 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 [2025-03-08 21:24:46,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:46,353 INFO L225 Difference]: With dead ends: 923 [2025-03-08 21:24:46,353 INFO L226 Difference]: Without dead ends: 465 [2025-03-08 21:24:46,354 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 [2025-03-08 21:24:46,356 INFO L435 NwaCegarLoop]: 547 mSDtfsCounter, 8 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:46,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2259 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 21:24:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-03-08 21:24:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2025-03-08 21:24:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 444 states have (on average 1.4054054054054055) internal successors, (624), 449 states have internal predecessors, (624), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 649 transitions. [2025-03-08 21:24:46,374 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 649 transitions. Word has length 66 [2025-03-08 21:24:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:46,374 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 649 transitions. [2025-03-08 21:24:46,374 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) [2025-03-08 21:24:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 649 transitions. [2025-03-08 21:24:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:24:46,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:46,376 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] [2025-03-08 21:24:46,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 21:24:46,376 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)] === [2025-03-08 21:24:46,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash 120710166, now seen corresponding path program 1 times [2025-03-08 21:24:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:46,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365816702] [2025-03-08 21:24:46,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:46,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:24:46,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:24:46,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:46,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:46,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365816702] [2025-03-08 21:24:46,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365816702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:46,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:46,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:24:46,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402176335] [2025-03-08 21:24:46,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:46,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:24:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:46,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:24:46,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:24:46,698 INFO L87 Difference]: Start difference. First operand 465 states and 649 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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) [2025-03-08 21:24:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:47,423 INFO L93 Difference]: Finished difference Result 942 states and 1319 transitions. [2025-03-08 21:24:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:24:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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 [2025-03-08 21:24:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:47,426 INFO L225 Difference]: With dead ends: 942 [2025-03-08 21:24:47,426 INFO L226 Difference]: Without dead ends: 481 [2025-03-08 21:24:47,427 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 [2025-03-08 21:24:47,427 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 33 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:47,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3646 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:24:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2025-03-08 21:24:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 475. [2025-03-08 21:24:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 454 states have (on average 1.4052863436123348) internal successors, (638), 459 states have internal predecessors, (638), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 663 transitions. [2025-03-08 21:24:47,439 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 663 transitions. Word has length 66 [2025-03-08 21:24:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:47,439 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 663 transitions. [2025-03-08 21:24:47,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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) [2025-03-08 21:24:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 663 transitions. [2025-03-08 21:24:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:24:47,440 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:47,441 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] [2025-03-08 21:24:47,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 21:24:47,441 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)] === [2025-03-08 21:24:47,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1040245330, now seen corresponding path program 1 times [2025-03-08 21:24:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444917530] [2025-03-08 21:24:47,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:47,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:24:47,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:24:47,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:47,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:47,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:47,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444917530] [2025-03-08 21:24:47,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444917530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:47,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:47,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 21:24:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812628292] [2025-03-08 21:24:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:47,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 21:24:47,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:47,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 21:24:47,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:24:47,784 INFO L87 Difference]: Start difference. First operand 475 states and 663 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2025-03-08 21:24:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:48,384 INFO L93 Difference]: Finished difference Result 952 states and 1331 transitions. [2025-03-08 21:24:48,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 21:24:48,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 [2025-03-08 21:24:48,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:48,387 INFO L225 Difference]: With dead ends: 952 [2025-03-08 21:24:48,387 INFO L226 Difference]: Without dead ends: 481 [2025-03-08 21:24:48,388 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 [2025-03-08 21:24:48,388 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 27 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:48,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3199 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:24:48,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2025-03-08 21:24:48,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 478. [2025-03-08 21:24:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 457 states have (on average 1.4026258205689277) internal successors, (641), 462 states have internal predecessors, (641), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 666 transitions. [2025-03-08 21:24:48,403 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 666 transitions. Word has length 66 [2025-03-08 21:24:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:48,403 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 666 transitions. [2025-03-08 21:24:48,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2025-03-08 21:24:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 666 transitions. [2025-03-08 21:24:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 21:24:48,404 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:48,404 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] [2025-03-08 21:24:48,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 21:24:48,404 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)] === [2025-03-08 21:24:48,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash 885840396, now seen corresponding path program 1 times [2025-03-08 21:24:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:48,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113027318] [2025-03-08 21:24:48,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:48,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:48,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 21:24:48,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 21:24:48,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:48,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:48,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113027318] [2025-03-08 21:24:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113027318] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:48,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:48,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:24:48,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798143299] [2025-03-08 21:24:48,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:48,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:24:48,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:48,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:24:48,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:24:48,603 INFO L87 Difference]: Start difference. First operand 478 states and 666 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) [2025-03-08 21:24:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:49,126 INFO L93 Difference]: Finished difference Result 959 states and 1339 transitions. [2025-03-08 21:24:49,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:24:49,128 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 [2025-03-08 21:24:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:49,130 INFO L225 Difference]: With dead ends: 959 [2025-03-08 21:24:49,130 INFO L226 Difference]: Without dead ends: 485 [2025-03-08 21:24:49,131 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 [2025-03-08 21:24:49,132 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 12 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:49,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2686 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:24:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2025-03-08 21:24:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 478. [2025-03-08 21:24:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 457 states have (on average 1.4026258205689277) internal successors, (641), 462 states have internal predecessors, (641), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 666 transitions. [2025-03-08 21:24:49,147 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 666 transitions. Word has length 67 [2025-03-08 21:24:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:49,148 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 666 transitions. [2025-03-08 21:24:49,148 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) [2025-03-08 21:24:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 666 transitions. [2025-03-08 21:24:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 21:24:49,149 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:49,149 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] [2025-03-08 21:24:49,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 21:24:49,150 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)] === [2025-03-08 21:24:49,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash 800296954, now seen corresponding path program 1 times [2025-03-08 21:24:49,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:49,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608068732] [2025-03-08 21:24:49,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:49,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 21:24:49,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 21:24:49,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:49,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:49,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608068732] [2025-03-08 21:24:49,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608068732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:49,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:49,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:24:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311306630] [2025-03-08 21:24:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:49,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:24:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:49,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:24:49,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:24:49,557 INFO L87 Difference]: Start difference. First operand 478 states and 666 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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) [2025-03-08 21:24:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:50,821 INFO L93 Difference]: Finished difference Result 1404 states and 1970 transitions. [2025-03-08 21:24:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 21:24:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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 [2025-03-08 21:24:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:50,826 INFO L225 Difference]: With dead ends: 1404 [2025-03-08 21:24:50,826 INFO L226 Difference]: Without dead ends: 930 [2025-03-08 21:24:50,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-03-08 21:24:50,828 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 852 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:50,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 3661 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 21:24:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2025-03-08 21:24:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 508. [2025-03-08 21:24:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 487 states have (on average 1.3880903490759753) internal successors, (676), 492 states have internal predecessors, (676), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 701 transitions. [2025-03-08 21:24:50,847 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 701 transitions. Word has length 67 [2025-03-08 21:24:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:50,847 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 701 transitions. [2025-03-08 21:24:50,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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) [2025-03-08 21:24:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 701 transitions. [2025-03-08 21:24:50,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 21:24:50,848 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:50,848 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] [2025-03-08 21:24:50,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 21:24:50,848 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)] === [2025-03-08 21:24:50,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1280407161, now seen corresponding path program 1 times [2025-03-08 21:24:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:50,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119290679] [2025-03-08 21:24:50,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:50,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 21:24:50,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 21:24:50,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:50,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:51,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:51,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119290679] [2025-03-08 21:24:51,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119290679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:51,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:51,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:24:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493608327] [2025-03-08 21:24:51,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:51,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:24:51,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:51,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:24:51,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:24:51,074 INFO L87 Difference]: Start difference. First operand 508 states and 701 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) [2025-03-08 21:24:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:51,640 INFO L93 Difference]: Finished difference Result 995 states and 1381 transitions. [2025-03-08 21:24:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:24:51,640 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 [2025-03-08 21:24:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:51,642 INFO L225 Difference]: With dead ends: 995 [2025-03-08 21:24:51,642 INFO L226 Difference]: Without dead ends: 521 [2025-03-08 21:24:51,643 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 [2025-03-08 21:24:51,644 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 20 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:51,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3648 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:24:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-08 21:24:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 511. [2025-03-08 21:24:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 490 states have (on average 1.3877551020408163) internal successors, (680), 495 states have internal predecessors, (680), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 705 transitions. [2025-03-08 21:24:51,655 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 705 transitions. Word has length 68 [2025-03-08 21:24:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:51,656 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 705 transitions. [2025-03-08 21:24:51,656 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) [2025-03-08 21:24:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 705 transitions. [2025-03-08 21:24:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 21:24:51,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:51,657 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] [2025-03-08 21:24:51,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 21:24:51,657 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)] === [2025-03-08 21:24:51,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash -940118731, now seen corresponding path program 1 times [2025-03-08 21:24:51,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:51,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11099451] [2025-03-08 21:24:51,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:51,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:51,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 21:24:51,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 21:24:51,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:51,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11099451] [2025-03-08 21:24:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11099451] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:51,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:24:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318183734] [2025-03-08 21:24:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:51,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:24:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:51,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:24:51,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:24:51,849 INFO L87 Difference]: Start difference. First operand 511 states and 705 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) [2025-03-08 21:24:52,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:52,576 INFO L93 Difference]: Finished difference Result 1016 states and 1410 transitions. [2025-03-08 21:24:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:24:52,577 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 [2025-03-08 21:24:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:52,579 INFO L225 Difference]: With dead ends: 1016 [2025-03-08 21:24:52,579 INFO L226 Difference]: Without dead ends: 539 [2025-03-08 21:24:52,580 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 [2025-03-08 21:24:52,581 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 37 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:52,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3578 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:24:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-03-08 21:24:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 511. [2025-03-08 21:24:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 490 states have (on average 1.3877551020408163) internal successors, (680), 495 states have internal predecessors, (680), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 705 transitions. [2025-03-08 21:24:52,598 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 705 transitions. Word has length 68 [2025-03-08 21:24:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:52,599 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 705 transitions. [2025-03-08 21:24:52,599 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) [2025-03-08 21:24:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 705 transitions. [2025-03-08 21:24:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:24:52,600 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:52,600 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] [2025-03-08 21:24:52,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 21:24:52,601 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)] === [2025-03-08 21:24:52,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash 453215023, now seen corresponding path program 1 times [2025-03-08 21:24:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729863997] [2025-03-08 21:24:52,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:52,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:24:52,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:24:52,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:52,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:52,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729863997] [2025-03-08 21:24:52,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729863997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:52,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:52,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:24:52,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298983268] [2025-03-08 21:24:52,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:52,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:24:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:52,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:24:52,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:24:52,852 INFO L87 Difference]: Start difference. First operand 511 states and 705 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2025-03-08 21:24:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:53,457 INFO L93 Difference]: Finished difference Result 1004 states and 1394 transitions. [2025-03-08 21:24:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:24:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 [2025-03-08 21:24:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:53,460 INFO L225 Difference]: With dead ends: 1004 [2025-03-08 21:24:53,460 INFO L226 Difference]: Without dead ends: 527 [2025-03-08 21:24:53,461 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 [2025-03-08 21:24:53,461 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 23 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:53,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3630 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:24:53,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-08 21:24:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 521. [2025-03-08 21:24:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 500 states have (on average 1.384) internal successors, (692), 505 states have internal predecessors, (692), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 717 transitions. [2025-03-08 21:24:53,473 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 717 transitions. Word has length 69 [2025-03-08 21:24:53,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:53,473 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 717 transitions. [2025-03-08 21:24:53,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2025-03-08 21:24:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 717 transitions. [2025-03-08 21:24:53,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:24:53,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:53,475 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] [2025-03-08 21:24:53,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 21:24:53,476 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)] === [2025-03-08 21:24:53,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash 336389107, now seen corresponding path program 1 times [2025-03-08 21:24:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:53,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501313350] [2025-03-08 21:24:53,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:53,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:24:53,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:24:53,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:53,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:53,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501313350] [2025-03-08 21:24:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501313350] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:53,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:53,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:24:53,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430545424] [2025-03-08 21:24:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:53,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:24:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:53,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:24:53,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:24:53,693 INFO L87 Difference]: Start difference. First operand 521 states and 717 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2025-03-08 21:24:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:54,325 INFO L93 Difference]: Finished difference Result 1026 states and 1421 transitions. [2025-03-08 21:24:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:24:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 [2025-03-08 21:24:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:54,327 INFO L225 Difference]: With dead ends: 1026 [2025-03-08 21:24:54,327 INFO L226 Difference]: Without dead ends: 539 [2025-03-08 21:24:54,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:24:54,333 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 17 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:54,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4008 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:24:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-03-08 21:24:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 524. [2025-03-08 21:24:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 503 states have (on average 1.3836978131212723) internal successors, (696), 508 states have internal predecessors, (696), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 721 transitions. [2025-03-08 21:24:54,348 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 721 transitions. Word has length 69 [2025-03-08 21:24:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:54,348 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 721 transitions. [2025-03-08 21:24:54,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2025-03-08 21:24:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 721 transitions. [2025-03-08 21:24:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:24:54,349 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:54,349 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] [2025-03-08 21:24:54,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 21:24:54,349 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)] === [2025-03-08 21:24:54,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1715793235, now seen corresponding path program 1 times [2025-03-08 21:24:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397634529] [2025-03-08 21:24:54,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:54,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:24:54,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:24:54,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:54,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:54,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397634529] [2025-03-08 21:24:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397634529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:54,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:54,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:24:54,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321876272] [2025-03-08 21:24:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:54,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:24:54,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:54,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:24:54,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:24:54,528 INFO L87 Difference]: Start difference. First operand 524 states and 721 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) [2025-03-08 21:24:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:55,016 INFO L93 Difference]: Finished difference Result 1021 states and 1411 transitions. [2025-03-08 21:24:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:24:55,017 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 [2025-03-08 21:24:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:55,020 INFO L225 Difference]: With dead ends: 1021 [2025-03-08 21:24:55,020 INFO L226 Difference]: Without dead ends: 531 [2025-03-08 21:24:55,020 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 [2025-03-08 21:24:55,021 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 11 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:55,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2717 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:24:55,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2025-03-08 21:24:55,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 524. [2025-03-08 21:24:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 503 states have (on average 1.3817097415506958) internal successors, (695), 508 states have internal predecessors, (695), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 720 transitions. [2025-03-08 21:24:55,033 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 720 transitions. Word has length 69 [2025-03-08 21:24:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:55,034 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 720 transitions. [2025-03-08 21:24:55,034 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) [2025-03-08 21:24:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 720 transitions. [2025-03-08 21:24:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:24:55,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:55,035 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] [2025-03-08 21:24:55,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 21:24:55,035 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)] === [2025-03-08 21:24:55,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1659638897, now seen corresponding path program 1 times [2025-03-08 21:24:55,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:55,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612644446] [2025-03-08 21:24:55,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:55,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:55,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:24:55,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:24:55,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:55,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:55,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:55,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612644446] [2025-03-08 21:24:55,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612644446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:55,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:55,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:24:55,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538171575] [2025-03-08 21:24:55,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:55,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:24:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:55,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:24:55,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:24:55,208 INFO L87 Difference]: Start difference. First operand 524 states and 720 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) [2025-03-08 21:24:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:55,683 INFO L93 Difference]: Finished difference Result 1019 states and 1409 transitions. [2025-03-08 21:24:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:24:55,684 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 [2025-03-08 21:24:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:55,686 INFO L225 Difference]: With dead ends: 1019 [2025-03-08 21:24:55,686 INFO L226 Difference]: Without dead ends: 529 [2025-03-08 21:24:55,686 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 [2025-03-08 21:24:55,687 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 8 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:55,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2653 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:24:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2025-03-08 21:24:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 528. [2025-03-08 21:24:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 507 states have (on average 1.3806706114398422) internal successors, (700), 512 states have internal predecessors, (700), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 725 transitions. [2025-03-08 21:24:55,700 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 725 transitions. Word has length 69 [2025-03-08 21:24:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:55,700 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 725 transitions. [2025-03-08 21:24:55,700 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) [2025-03-08 21:24:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 725 transitions. [2025-03-08 21:24:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:24:55,701 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:55,701 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] [2025-03-08 21:24:55,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 21:24:55,701 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)] === [2025-03-08 21:24:55,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1849591247, now seen corresponding path program 1 times [2025-03-08 21:24:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:55,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507310453] [2025-03-08 21:24:55,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:55,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:55,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:24:55,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:24:55,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:55,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:55,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507310453] [2025-03-08 21:24:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507310453] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:55,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:55,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:24:55,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504058692] [2025-03-08 21:24:55,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:56,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:24:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:56,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:24:56,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:24:56,001 INFO L87 Difference]: Start difference. First operand 528 states and 725 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 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) [2025-03-08 21:24:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:24:56,752 INFO L93 Difference]: Finished difference Result 1034 states and 1429 transitions. [2025-03-08 21:24:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:24:56,752 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 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 [2025-03-08 21:24:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:24:56,754 INFO L225 Difference]: With dead ends: 1034 [2025-03-08 21:24:56,754 INFO L226 Difference]: Without dead ends: 540 [2025-03-08 21:24:56,755 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 [2025-03-08 21:24:56,755 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 13 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3566 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:24:56,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3566 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:24:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2025-03-08 21:24:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 532. [2025-03-08 21:24:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 511 states have (on average 1.3796477495107633) internal successors, (705), 516 states have internal predecessors, (705), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:24:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 730 transitions. [2025-03-08 21:24:56,765 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 730 transitions. Word has length 70 [2025-03-08 21:24:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:24:56,766 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 730 transitions. [2025-03-08 21:24:56,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 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) [2025-03-08 21:24:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 730 transitions. [2025-03-08 21:24:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:24:56,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:24:56,766 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] [2025-03-08 21:24:56,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 21:24:56,767 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)] === [2025-03-08 21:24:56,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:24:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1772012149, now seen corresponding path program 1 times [2025-03-08 21:24:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:24:56,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800856994] [2025-03-08 21:24:56,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:24:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:24:56,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:24:56,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:24:56,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:24:56,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:24:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:24:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:24:57,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800856994] [2025-03-08 21:24:57,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800856994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:24:57,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:24:57,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:24:57,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494966028] [2025-03-08 21:24:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:24:57,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:24:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:24:57,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:24:57,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:24:57,117 INFO L87 Difference]: Start difference. First operand 532 states and 730 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 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) [2025-03-08 21:25:01,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:25:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:25:01,697 INFO L93 Difference]: Finished difference Result 1053 states and 1452 transitions. [2025-03-08 21:25:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:25:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 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 [2025-03-08 21:25:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:25:01,700 INFO L225 Difference]: With dead ends: 1053 [2025-03-08 21:25:01,700 INFO L226 Difference]: Without dead ends: 555 [2025-03-08 21:25:01,701 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 [2025-03-08 21:25:01,701 INFO L435 NwaCegarLoop]: 543 mSDtfsCounter, 44 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:25:01,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3952 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-03-08 21:25:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2025-03-08 21:25:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 530. [2025-03-08 21:25:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 509 states have (on average 1.3791748526522594) internal successors, (702), 514 states have internal predecessors, (702), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:25:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 727 transitions. [2025-03-08 21:25:01,711 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 727 transitions. Word has length 70 [2025-03-08 21:25:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:25:01,711 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 727 transitions. [2025-03-08 21:25:01,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 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) [2025-03-08 21:25:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 727 transitions. [2025-03-08 21:25:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:25:01,712 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:25:01,712 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] [2025-03-08 21:25:01,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 21:25:01,712 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)] === [2025-03-08 21:25:01,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:25:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2087456900, now seen corresponding path program 1 times [2025-03-08 21:25:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:25:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878735972] [2025-03-08 21:25:01,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:25:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:25:01,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:25:01,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:25:01,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:25:01,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:25:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:25:01,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:25:01,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878735972] [2025-03-08 21:25:01,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878735972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:25:01,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:25:01,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 21:25:01,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15180277] [2025-03-08 21:25:01,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:25:01,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 21:25:01,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:25:01,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 21:25:01,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:25:01,908 INFO L87 Difference]: Start difference. First operand 530 states and 727 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 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) [2025-03-08 21:25:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:25:02,631 INFO L93 Difference]: Finished difference Result 1043 states and 1438 transitions. [2025-03-08 21:25:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:25:02,632 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 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 [2025-03-08 21:25:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:25:02,634 INFO L225 Difference]: With dead ends: 1043 [2025-03-08 21:25:02,634 INFO L226 Difference]: Without dead ends: 547 [2025-03-08 21:25:02,634 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 [2025-03-08 21:25:02,635 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 40 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 4065 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:25:02,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 4065 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:25:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2025-03-08 21:25:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 536. [2025-03-08 21:25:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 515 states have (on average 1.3766990291262136) internal successors, (709), 520 states have internal predecessors, (709), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:25:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 734 transitions. [2025-03-08 21:25:02,650 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 734 transitions. Word has length 70 [2025-03-08 21:25:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:25:02,650 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 734 transitions. [2025-03-08 21:25:02,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 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) [2025-03-08 21:25:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 734 transitions. [2025-03-08 21:25:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:25:02,651 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:25:02,652 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] [2025-03-08 21:25:02,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 21:25:02,652 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)] === [2025-03-08 21:25:02,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:25:02,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1754401810, now seen corresponding path program 1 times [2025-03-08 21:25:02,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:25:02,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176086634] [2025-03-08 21:25:02,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:25:02,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:25:02,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:25:02,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:25:02,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:25:02,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:25:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:25:02,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:25:02,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176086634] [2025-03-08 21:25:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176086634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:25:02,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:25:02,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:25:02,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961761289] [2025-03-08 21:25:02,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:25:02,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:25:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:25:02,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:25:02,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:25:02,836 INFO L87 Difference]: Start difference. First operand 536 states and 734 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) [2025-03-08 21:25:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:25:03,505 INFO L93 Difference]: Finished difference Result 1064 states and 1465 transitions. [2025-03-08 21:25:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:25:03,506 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 [2025-03-08 21:25:03,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:25:03,508 INFO L225 Difference]: With dead ends: 1064 [2025-03-08 21:25:03,508 INFO L226 Difference]: Without dead ends: 562 [2025-03-08 21:25:03,508 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 [2025-03-08 21:25:03,509 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 33 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:25:03,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3578 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:25:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-03-08 21:25:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 533. [2025-03-08 21:25:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 512 states have (on average 1.37890625) internal successors, (706), 517 states have internal predecessors, (706), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 21:25:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 731 transitions. [2025-03-08 21:25:03,520 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 731 transitions. Word has length 70 [2025-03-08 21:25:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:25:03,520 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 731 transitions. [2025-03-08 21:25:03,520 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) [2025-03-08 21:25:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 731 transitions. [2025-03-08 21:25:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:25:03,521 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:25:03,521 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] [2025-03-08 21:25:03,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 21:25:03,521 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)] === [2025-03-08 21:25:03,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:25:03,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1291735459, now seen corresponding path program 1 times [2025-03-08 21:25:03,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:25:03,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409036860] [2025-03-08 21:25:03,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:25:03,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:25:03,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:25:03,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:25:03,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:25:03,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:25:25,090 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* (div |c_ULTIMATE.start_main_~_hj_j~0#1| 4294967296) 524288)) (.cse0 (div |c_ULTIMATE.start_main_~_hj_j~0#1| 8192))) (and (= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (<= 4408680405129836981 (+ (* 1030789530 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* |c_ULTIMATE.start_main_~_hj_j~0#1| 2061579059) (* (div (+ (* (- 4123158118) |c_ULTIMATE.start_main_~_hj_j~0#1|) 8817360810260198248 .cse1 (* (- 2061579059) |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* (- 1) .cse0)) 4294967296) 2147483648))))) is different from false [2025-03-08 21:25:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:25:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:25:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409036860] [2025-03-08 21:25:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409036860] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:25:25,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:25:25,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 21:25:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724109362] [2025-03-08 21:25:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:25:25,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 21:25:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:25:25,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 21:25:25,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=72, Unknown=1, NotChecked=16, Total=110 [2025-03-08 21:25:25,135 INFO L87 Difference]: Start difference. First operand 533 states and 731 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 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) [2025-03-08 21:25:27,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:25:31,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:25:35,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:26:11,798 WARN L286 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 45 DAG size of output: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)