./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.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 8a7354f4fd6865dd535373d18faa5c6e5c139e69159223a75476e722fa8db1a5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 01:23:27,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 01:23:27,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 01:23:27,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 01:23:27,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 01:23:27,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 01:23:27,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 01:23:27,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 01:23:27,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 01:23:27,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 01:23:27,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 01:23:27,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 01:23:27,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 01:23:27,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 01:23:27,834 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 01:23:27,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 01:23:27,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 01:23:27,835 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 01:23:27,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 01:23:27,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 01:23:27,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 01:23:27,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 01:23:27,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 01:23:27,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 01:23:27,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 01:23:27,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 01:23:27,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 01:23:27,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 01:23:27,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 01:23:27,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 01:23:27,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 01:23:27,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 01:23:27,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:23:27,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 01:23:27,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 01:23:27,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 01:23:27,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 01:23:27,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 01:23:27,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 01:23:27,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 01:23:27,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 01:23:27,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 01:23:27,840 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7354f4fd6865dd535373d18faa5c6e5c139e69159223a75476e722fa8db1a5 [2024-10-14 01:23:28,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 01:23:28,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 01:23:28,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 01:23:28,041 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 01:23:28,041 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 01:23:28,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i [2024-10-14 01:23:29,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 01:23:29,559 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 01:23:29,560 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i [2024-10-14 01:23:29,584 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb62df86c/e1ca5ebe96ec461a9c1a42fa2b03c30b/FLAG3375b0f84 [2024-10-14 01:23:29,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb62df86c/e1ca5ebe96ec461a9c1a42fa2b03c30b [2024-10-14 01:23:29,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 01:23:29,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 01:23:29,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 01:23:29,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 01:23:29,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 01:23:29,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:23:29" (1/1) ... [2024-10-14 01:23:29,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44426aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:29, skipping insertion in model container [2024-10-14 01:23:29,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:23:29" (1/1) ... [2024-10-14 01:23:29,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 01:23:30,158 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i[65243,65256] [2024-10-14 01:23:30,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:23:30,317 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 01:23:30,356 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i[65243,65256] [2024-10-14 01:23:30,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:23:30,538 INFO L204 MainTranslator]: Completed translation [2024-10-14 01:23:30,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30 WrapperNode [2024-10-14 01:23:30,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 01:23:30,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 01:23:30,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 01:23:30,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 01:23:30,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,716 INFO L138 Inliner]: procedures = 619, calls = 2157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 2547 [2024-10-14 01:23:30,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 01:23:30,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 01:23:30,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 01:23:30,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 01:23:30,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,794 INFO L175 MemorySlicer]: Split 2133 memory accesses to 12 slices as follows [2, 7, 43, 449, 33, 1025, 33, 449, 3, 15, 38, 36]. 48 percent of accesses are in the largest equivalence class. The 2071 initializations are split as follows [2, 7, 0, 448, 32, 1024, 32, 448, 0, 14, 32, 32]. The 19 writes are split as follows [0, 0, 14, 0, 0, 0, 0, 0, 1, 0, 2, 2]. [2024-10-14 01:23:30,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 01:23:30,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 01:23:30,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 01:23:30,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 01:23:30,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (1/1) ... [2024-10-14 01:23:30,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:23:30,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:30,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 01:23:30,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 01:23:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 01:23:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 01:23:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 01:23:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 01:23:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 01:23:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-14 01:23:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-14 01:23:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-14 01:23:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-14 01:23:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-14 01:23:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-14 01:23:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-14 01:23:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-14 01:23:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 01:23:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 01:23:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 01:23:31,147 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 01:23:31,148 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 01:23:32,886 INFO L? ?]: Removed 144 outVars from TransFormulas that were not future-live. [2024-10-14 01:23:32,887 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 01:23:32,981 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 01:23:32,981 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-14 01:23:32,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:23:32 BoogieIcfgContainer [2024-10-14 01:23:32,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 01:23:32,983 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 01:23:32,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 01:23:32,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 01:23:32,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:23:29" (1/3) ... [2024-10-14 01:23:32,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cc2d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:23:32, skipping insertion in model container [2024-10-14 01:23:32,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:23:30" (2/3) ... [2024-10-14 01:23:32,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cc2d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:23:32, skipping insertion in model container [2024-10-14 01:23:32,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:23:32" (3/3) ... [2024-10-14 01:23:32,987 INFO L112 eAbstractionObserver]: Analyzing ICFG gcas_8_safe.c-amalgamation.i [2024-10-14 01:23:32,999 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 01:23:32,999 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 01:23:33,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 01:23:33,048 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;@659e706a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 01:23:33,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 01:23:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 01:23:33,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:33,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:33,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:33,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -781333683, now seen corresponding path program 1 times [2024-10-14 01:23:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264328956] [2024-10-14 01:23:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:23:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:33,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264328956] [2024-10-14 01:23:33,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264328956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:33,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:23:33,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:23:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525444494] [2024-10-14 01:23:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:33,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 01:23:33,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 01:23:33,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:23:33,629 INFO L87 Difference]: Start difference. First operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 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) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:33,791 INFO L93 Difference]: Finished difference Result 147 states and 251 transitions. [2024-10-14 01:23:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 01:23:33,794 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2024-10-14 01:23:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:33,800 INFO L225 Difference]: With dead ends: 147 [2024-10-14 01:23:33,800 INFO L226 Difference]: Without dead ends: 73 [2024-10-14 01:23:33,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:23:33,804 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:33,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:23:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-14 01:23:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-14 01:23:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 72 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2024-10-14 01:23:33,832 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 56 [2024-10-14 01:23:33,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:33,832 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2024-10-14 01:23:33,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2024-10-14 01:23:33,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 01:23:33,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:33,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:33,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 01:23:33,834 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:33,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:33,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2129147117, now seen corresponding path program 1 times [2024-10-14 01:23:33,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:33,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284605071] [2024-10-14 01:23:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:33,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:23:34,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284605071] [2024-10-14 01:23:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284605071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:34,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:23:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:23:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271982956] [2024-10-14 01:23:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:34,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:34,152 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:34,407 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2024-10-14 01:23:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:34,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-14 01:23:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:34,408 INFO L225 Difference]: With dead ends: 138 [2024-10-14 01:23:34,408 INFO L226 Difference]: Without dead ends: 73 [2024-10-14 01:23:34,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:34,409 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:34,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-14 01:23:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-14 01:23:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2024-10-14 01:23:34,420 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 56 [2024-10-14 01:23:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:34,420 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2024-10-14 01:23:34,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2024-10-14 01:23:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 01:23:34,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:34,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:34,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 01:23:34,421 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:34,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2113628399, now seen corresponding path program 1 times [2024-10-14 01:23:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:34,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843222628] [2024-10-14 01:23:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:23:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843222628] [2024-10-14 01:23:34,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843222628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:34,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:23:34,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:23:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815988047] [2024-10-14 01:23:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:34,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:34,726 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:34,971 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2024-10-14 01:23:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-14 01:23:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:34,973 INFO L225 Difference]: With dead ends: 105 [2024-10-14 01:23:34,973 INFO L226 Difference]: Without dead ends: 73 [2024-10-14 01:23:34,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:34,974 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:34,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-14 01:23:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-14 01:23:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2024-10-14 01:23:34,978 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 56 [2024-10-14 01:23:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:34,978 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2024-10-14 01:23:34,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2024-10-14 01:23:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 01:23:34,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:34,979 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:34,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 01:23:34,980 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:34,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1092560045, now seen corresponding path program 1 times [2024-10-14 01:23:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:34,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625714651] [2024-10-14 01:23:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:23:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625714651] [2024-10-14 01:23:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625714651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:35,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:23:35,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:23:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760493495] [2024-10-14 01:23:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:35,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:35,243 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:35,453 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2024-10-14 01:23:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-14 01:23:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:35,455 INFO L225 Difference]: With dead ends: 76 [2024-10-14 01:23:35,455 INFO L226 Difference]: Without dead ends: 73 [2024-10-14 01:23:35,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:35,458 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:35,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-14 01:23:35,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-14 01:23:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2024-10-14 01:23:35,467 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 56 [2024-10-14 01:23:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:35,468 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2024-10-14 01:23:35,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2024-10-14 01:23:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 01:23:35,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:35,469 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:35,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 01:23:35,469 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:35,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1092561967, now seen corresponding path program 1 times [2024-10-14 01:23:35,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402523162] [2024-10-14 01:23:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:23:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402523162] [2024-10-14 01:23:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402523162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:23:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:23:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607098846] [2024-10-14 01:23:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:35,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:35,867 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:36,111 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2024-10-14 01:23:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:36,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-14 01:23:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:36,114 INFO L225 Difference]: With dead ends: 97 [2024-10-14 01:23:36,114 INFO L226 Difference]: Without dead ends: 76 [2024-10-14 01:23:36,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:23:36,115 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:36,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-14 01:23:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-10-14 01:23:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2024-10-14 01:23:36,122 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 56 [2024-10-14 01:23:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:36,123 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2024-10-14 01:23:36,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2024-10-14 01:23:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-14 01:23:36,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:36,126 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:36,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 01:23:36,126 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:36,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash 986750680, now seen corresponding path program 1 times [2024-10-14 01:23:36,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747356455] [2024-10-14 01:23:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:36,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:23:36,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:36,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747356455] [2024-10-14 01:23:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747356455] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:36,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930305949] [2024-10-14 01:23:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:36,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:36,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:36,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 01:23:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:37,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 01:23:37,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:23:37,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:23:37,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930305949] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:37,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:23:37,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:23:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154682778] [2024-10-14 01:23:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:37,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:37,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:37,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:23:37,191 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:37,396 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-10-14 01:23:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2024-10-14 01:23:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:37,397 INFO L225 Difference]: With dead ends: 86 [2024-10-14 01:23:37,397 INFO L226 Difference]: Without dead ends: 75 [2024-10-14 01:23:37,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:23:37,398 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:37,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:37,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-14 01:23:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-14 01:23:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.337837837837838) internal successors, (99), 74 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2024-10-14 01:23:37,404 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 59 [2024-10-14 01:23:37,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:37,404 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2024-10-14 01:23:37,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2024-10-14 01:23:37,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-14 01:23:37,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:37,405 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:37,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 01:23:37,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 01:23:37,606 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:37,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash -985336725, now seen corresponding path program 1 times [2024-10-14 01:23:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850690207] [2024-10-14 01:23:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:37,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:23:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850690207] [2024-10-14 01:23:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850690207] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022954580] [2024-10-14 01:23:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:37,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:37,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:37,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:38,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 01:23:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:38,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:23:38,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:23:38,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:23:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022954580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:23:38,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-14 01:23:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440134519] [2024-10-14 01:23:38,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:38,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:38,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 01:23:38,541 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:38,752 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-14 01:23:38,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:38,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2024-10-14 01:23:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:38,753 INFO L225 Difference]: With dead ends: 107 [2024-10-14 01:23:38,753 INFO L226 Difference]: Without dead ends: 80 [2024-10-14 01:23:38,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 01:23:38,754 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:38,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-14 01:23:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-10-14 01:23:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2024-10-14 01:23:38,758 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 62 [2024-10-14 01:23:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:38,758 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2024-10-14 01:23:38,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2024-10-14 01:23:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-14 01:23:38,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:38,759 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:38,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:38,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-14 01:23:38,960 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:38,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1664813890, now seen corresponding path program 1 times [2024-10-14 01:23:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288752519] [2024-10-14 01:23:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:23:39,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:39,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288752519] [2024-10-14 01:23:39,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288752519] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:39,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470187764] [2024-10-14 01:23:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:39,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:39,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:39,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:39,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 01:23:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:39,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 01:23:39,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:23:39,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:23:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470187764] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:39,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:23:39,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:23:39,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931631976] [2024-10-14 01:23:39,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:39,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:23:39,878 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:40,087 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2024-10-14 01:23:40,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:40,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2024-10-14 01:23:40,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:40,087 INFO L225 Difference]: With dead ends: 93 [2024-10-14 01:23:40,088 INFO L226 Difference]: Without dead ends: 77 [2024-10-14 01:23:40,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:23:40,088 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:40,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-14 01:23:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-14 01:23:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2024-10-14 01:23:40,092 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 65 [2024-10-14 01:23:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:40,092 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2024-10-14 01:23:40,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2024-10-14 01:23:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 01:23:40,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:40,093 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:40,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:40,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:40,294 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:40,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:40,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1900472348, now seen corresponding path program 1 times [2024-10-14 01:23:40,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:40,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721110833] [2024-10-14 01:23:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:40,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:23:40,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:40,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721110833] [2024-10-14 01:23:40,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721110833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:40,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097696788] [2024-10-14 01:23:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:40,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:40,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:40,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:40,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 01:23:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:41,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 01:23:41,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:23:41,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:23:41,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097696788] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:41,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:23:41,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:23:41,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605798771] [2024-10-14 01:23:41,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:41,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:23:41,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:41,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:23:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:23:41,111 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:41,310 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-10-14 01:23:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:23:41,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2024-10-14 01:23:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:41,311 INFO L225 Difference]: With dead ends: 83 [2024-10-14 01:23:41,311 INFO L226 Difference]: Without dead ends: 78 [2024-10-14 01:23:41,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:23:41,312 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:41,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-14 01:23:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-14 01:23:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 77 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2024-10-14 01:23:41,316 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 68 [2024-10-14 01:23:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:41,317 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2024-10-14 01:23:41,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2024-10-14 01:23:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 01:23:41,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:41,321 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:41,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 01:23:41,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:41,522 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:41,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1506015068, now seen corresponding path program 1 times [2024-10-14 01:23:41,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335464344] [2024-10-14 01:23:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:23:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335464344] [2024-10-14 01:23:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335464344] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744660490] [2024-10-14 01:23:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:41,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:41,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:41,844 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:41,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 01:23:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:42,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 01:23:42,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:23:42,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:23:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744660490] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:23:42,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:23:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-14 01:23:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479256533] [2024-10-14 01:23:42,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:23:42,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 01:23:42,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 01:23:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:23:42,381 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:42,622 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2024-10-14 01:23:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 01:23:42,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 71 [2024-10-14 01:23:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:42,623 INFO L225 Difference]: With dead ends: 111 [2024-10-14 01:23:42,623 INFO L226 Difference]: Without dead ends: 87 [2024-10-14 01:23:42,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:23:42,624 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 19 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:42,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 235 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-14 01:23:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-10-14 01:23:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2024-10-14 01:23:42,627 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 71 [2024-10-14 01:23:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:42,628 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2024-10-14 01:23:42,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2024-10-14 01:23:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-14 01:23:42,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:42,628 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:42,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:42,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 01:23:42,829 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:42,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1738722315, now seen corresponding path program 2 times [2024-10-14 01:23:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395682660] [2024-10-14 01:23:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:23:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395682660] [2024-10-14 01:23:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395682660] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372613446] [2024-10-14 01:23:43,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:23:43,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:43,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:43,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:43,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 01:23:43,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:23:43,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:23:43,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:23:43,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 01:23:43,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 01:23:43,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372613446] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:23:43,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:23:43,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-14 01:23:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168823401] [2024-10-14 01:23:43,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:23:43,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 01:23:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:43,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 01:23:43,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:23:43,870 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:44,559 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2024-10-14 01:23:44,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 01:23:44,560 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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 80 [2024-10-14 01:23:44,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:44,561 INFO L225 Difference]: With dead ends: 125 [2024-10-14 01:23:44,561 INFO L226 Difference]: Without dead ends: 101 [2024-10-14 01:23:44,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:23:44,562 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 20 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:44,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 629 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 01:23:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-14 01:23:44,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2024-10-14 01:23:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2024-10-14 01:23:44,566 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 80 [2024-10-14 01:23:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:44,566 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2024-10-14 01:23:44,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2024-10-14 01:23:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-14 01:23:44,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:44,567 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:44,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:44,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:44,768 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:44,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1779525407, now seen corresponding path program 3 times [2024-10-14 01:23:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651655532] [2024-10-14 01:23:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 01:23:45,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651655532] [2024-10-14 01:23:45,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651655532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985241856] [2024-10-14 01:23:45,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:23:45,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:45,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:45,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:45,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 01:23:45,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 01:23:45,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:23:45,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 01:23:45,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-14 01:23:45,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:23:45,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985241856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:45,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:23:45,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-10-14 01:23:45,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964666141] [2024-10-14 01:23:45,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:45,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 01:23:45,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:45,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 01:23:45,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:23:45,894 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:46,243 INFO L93 Difference]: Finished difference Result 137 states and 182 transitions. [2024-10-14 01:23:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 01:23:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 92 [2024-10-14 01:23:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:46,244 INFO L225 Difference]: With dead ends: 137 [2024-10-14 01:23:46,244 INFO L226 Difference]: Without dead ends: 106 [2024-10-14 01:23:46,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:23:46,245 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 17 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:46,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 294 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:23:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-14 01:23:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2024-10-14 01:23:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2024-10-14 01:23:46,248 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 92 [2024-10-14 01:23:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:46,248 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2024-10-14 01:23:46,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2024-10-14 01:23:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-14 01:23:46,249 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:46,249 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:46,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:46,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:46,450 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:46,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1876763282, now seen corresponding path program 1 times [2024-10-14 01:23:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:46,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304758225] [2024-10-14 01:23:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:46,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 01:23:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304758225] [2024-10-14 01:23:46,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304758225] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816509274] [2024-10-14 01:23:46,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:46,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:46,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:46,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:46,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 01:23:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:47,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:23:47,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 01:23:47,542 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:23:47,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816509274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:23:47,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:23:47,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-14 01:23:47,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19597367] [2024-10-14 01:23:47,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:47,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:23:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:23:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:23:47,544 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:47,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:47,778 INFO L93 Difference]: Finished difference Result 159 states and 211 transitions. [2024-10-14 01:23:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:23:47,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 95 [2024-10-14 01:23:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:47,781 INFO L225 Difference]: With dead ends: 159 [2024-10-14 01:23:47,781 INFO L226 Difference]: Without dead ends: 103 [2024-10-14 01:23:47,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:23:47,783 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:47,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 228 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-14 01:23:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-14 01:23:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.32) internal successors, (132), 100 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2024-10-14 01:23:47,789 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 95 [2024-10-14 01:23:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:47,789 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2024-10-14 01:23:47,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:47,789 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2024-10-14 01:23:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-14 01:23:47,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:47,790 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:47,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 01:23:47,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 01:23:47,995 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:47,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1271339392, now seen corresponding path program 1 times [2024-10-14 01:23:47,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:47,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38840614] [2024-10-14 01:23:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:47,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 01:23:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38840614] [2024-10-14 01:23:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38840614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715699760] [2024-10-14 01:23:48,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:48,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:48,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:48,478 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:48,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 01:23:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:49,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:23:49,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-14 01:23:49,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 01:23:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715699760] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:49,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:23:49,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2024-10-14 01:23:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735384998] [2024-10-14 01:23:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:49,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:23:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:23:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-14 01:23:49,096 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:49,303 INFO L93 Difference]: Finished difference Result 133 states and 175 transitions. [2024-10-14 01:23:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:23:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 98 [2024-10-14 01:23:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:49,304 INFO L225 Difference]: With dead ends: 133 [2024-10-14 01:23:49,304 INFO L226 Difference]: Without dead ends: 102 [2024-10-14 01:23:49,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-14 01:23:49,305 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:49,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-14 01:23:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-10-14 01:23:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.316831683168317) internal successors, (133), 101 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 133 transitions. [2024-10-14 01:23:49,310 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 133 transitions. Word has length 98 [2024-10-14 01:23:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:49,311 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 133 transitions. [2024-10-14 01:23:49,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 133 transitions. [2024-10-14 01:23:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-14 01:23:49,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:49,312 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:49,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:49,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 01:23:49,513 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:49,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:49,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1169731075, now seen corresponding path program 1 times [2024-10-14 01:23:49,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:49,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972553309] [2024-10-14 01:23:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-14 01:23:50,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:50,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972553309] [2024-10-14 01:23:50,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972553309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:50,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855336065] [2024-10-14 01:23:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:50,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:50,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:50,013 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:50,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 01:23:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:50,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 01:23:50,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:23:50,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-14 01:23:50,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855336065] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:23:50,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:23:50,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-14 01:23:50,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296165444] [2024-10-14 01:23:50,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:23:50,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 01:23:50,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 01:23:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-14 01:23:50,714 INFO L87 Difference]: Start difference. First operand 102 states and 133 transitions. Second operand has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:51,716 INFO L93 Difference]: Finished difference Result 160 states and 216 transitions. [2024-10-14 01:23:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 01:23:51,716 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 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 99 [2024-10-14 01:23:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:51,717 INFO L225 Difference]: With dead ends: 160 [2024-10-14 01:23:51,717 INFO L226 Difference]: Without dead ends: 125 [2024-10-14 01:23:51,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:23:51,717 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 56 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:51,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 909 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 01:23:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-14 01:23:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-10-14 01:23:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-10-14 01:23:51,721 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 99 [2024-10-14 01:23:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:51,722 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-10-14 01:23:51,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-10-14 01:23:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-14 01:23:51,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:51,723 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:51,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 01:23:51,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 01:23:51,923 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:51,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 517779502, now seen corresponding path program 2 times [2024-10-14 01:23:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:51,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569572097] [2024-10-14 01:23:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:51,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-14 01:23:52,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569572097] [2024-10-14 01:23:52,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569572097] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396396692] [2024-10-14 01:23:52,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:23:52,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:52,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:52,419 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:52,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 01:23:53,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:23:53,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:23:53,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 01:23:53,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-14 01:23:53,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 01:23:53,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396396692] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:23:53,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:23:53,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-14 01:23:53,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579206410] [2024-10-14 01:23:53,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:23:53,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 01:23:53,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 01:23:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-14 01:23:53,333 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:55,063 INFO L93 Difference]: Finished difference Result 200 states and 270 transitions. [2024-10-14 01:23:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 01:23:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 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 120 [2024-10-14 01:23:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:55,064 INFO L225 Difference]: With dead ends: 200 [2024-10-14 01:23:55,064 INFO L226 Difference]: Without dead ends: 147 [2024-10-14 01:23:55,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-14 01:23:55,065 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 58 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:55,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1460 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-14 01:23:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-14 01:23:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-10-14 01:23:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.321917808219178) internal successors, (193), 146 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2024-10-14 01:23:55,069 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 120 [2024-10-14 01:23:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:55,069 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2024-10-14 01:23:55,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2024-10-14 01:23:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 01:23:55,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:55,070 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:55,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:55,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 01:23:55,271 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:55,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:55,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1934356562, now seen corresponding path program 3 times [2024-10-14 01:23:55,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:55,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077594561] [2024-10-14 01:23:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:55,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-14 01:23:56,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:56,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077594561] [2024-10-14 01:23:56,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077594561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:56,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847848917] [2024-10-14 01:23:56,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:23:56,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:56,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:56,141 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:56,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 01:23:56,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 01:23:56,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:23:56,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:23:56,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-10-14 01:23:56,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-14 01:23:56,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847848917] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:56,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:23:56,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 5] total 22 [2024-10-14 01:23:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745204920] [2024-10-14 01:23:56,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:56,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:23:56,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:23:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:23:56,850 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:57,063 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2024-10-14 01:23:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:23:57,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 144 [2024-10-14 01:23:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:57,064 INFO L225 Difference]: With dead ends: 158 [2024-10-14 01:23:57,064 INFO L226 Difference]: Without dead ends: 148 [2024-10-14 01:23:57,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:23:57,065 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:57,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-10-14 01:23:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-10-14 01:23:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.3197278911564625) internal successors, (194), 147 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 194 transitions. [2024-10-14 01:23:57,069 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 194 transitions. Word has length 144 [2024-10-14 01:23:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:57,069 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 194 transitions. [2024-10-14 01:23:57,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 194 transitions. [2024-10-14 01:23:57,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-14 01:23:57,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:57,070 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:57,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 01:23:57,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 01:23:57,270 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:57,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash -201194635, now seen corresponding path program 1 times [2024-10-14 01:23:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132628194] [2024-10-14 01:23:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-14 01:23:58,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:23:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132628194] [2024-10-14 01:23:58,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132628194] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279343503] [2024-10-14 01:23:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:58,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:23:58,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:23:58,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:23:58,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 01:23:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:23:58,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:23:58,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:23:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 01:23:58,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:23:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-14 01:23:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279343503] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:23:58,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:23:58,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-14 01:23:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277696964] [2024-10-14 01:23:58,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:23:58,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:23:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:23:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:23:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:23:58,853 INFO L87 Difference]: Start difference. First operand 148 states and 194 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:23:59,055 INFO L93 Difference]: Finished difference Result 160 states and 209 transitions. [2024-10-14 01:23:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:23:59,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 147 [2024-10-14 01:23:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:23:59,056 INFO L225 Difference]: With dead ends: 160 [2024-10-14 01:23:59,056 INFO L226 Difference]: Without dead ends: 149 [2024-10-14 01:23:59,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:23:59,057 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:23:59,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:23:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-14 01:23:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-10-14 01:23:59,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 148 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2024-10-14 01:23:59,061 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 147 [2024-10-14 01:23:59,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:23:59,062 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2024-10-14 01:23:59,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:23:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2024-10-14 01:23:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-14 01:23:59,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:23:59,062 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:23:59,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 01:23:59,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 01:23:59,263 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:23:59,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:23:59,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1434118105, now seen corresponding path program 1 times [2024-10-14 01:23:59,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:23:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356261816] [2024-10-14 01:23:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:23:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:23:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:24:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-14 01:24:00,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:24:00,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356261816] [2024-10-14 01:24:00,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356261816] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:24:00,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840916443] [2024-10-14 01:24:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:24:00,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:00,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:24:00,052 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:24:00,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 01:24:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:24:00,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-14 01:24:00,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:24:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 01:24:00,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:24:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-10-14 01:24:01,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840916443] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:24:01,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:24:01,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2024-10-14 01:24:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717346581] [2024-10-14 01:24:01,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:24:01,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-14 01:24:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:24:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-14 01:24:01,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2024-10-14 01:24:01,215 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:24:05,678 INFO L93 Difference]: Finished difference Result 245 states and 334 transitions. [2024-10-14 01:24:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-14 01:24:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 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 148 [2024-10-14 01:24:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:24:05,680 INFO L225 Difference]: With dead ends: 245 [2024-10-14 01:24:05,680 INFO L226 Difference]: Without dead ends: 190 [2024-10-14 01:24:05,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2024-10-14 01:24:05,681 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 220 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:24:05,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2370 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-14 01:24:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-10-14 01:24:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-10-14 01:24:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.320855614973262) internal successors, (247), 187 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:05,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2024-10-14 01:24:05,686 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 148 [2024-10-14 01:24:05,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:24:05,686 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2024-10-14 01:24:05,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2024-10-14 01:24:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-14 01:24:05,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:24:05,687 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:24:05,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-14 01:24:05,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:05,888 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:24:05,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:24:05,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1320323566, now seen corresponding path program 2 times [2024-10-14 01:24:05,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:24:05,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837406080] [2024-10-14 01:24:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:24:05,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:24:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:24:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2024-10-14 01:24:06,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:24:06,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837406080] [2024-10-14 01:24:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837406080] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:24:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043225764] [2024-10-14 01:24:06,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:24:06,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:24:06,993 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:24:06,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 01:24:07,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:24:07,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:24:07,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 3196 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-14 01:24:07,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:24:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2024-10-14 01:24:07,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:24:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-14 01:24:08,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043225764] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:24:08,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:24:08,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2024-10-14 01:24:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078966985] [2024-10-14 01:24:08,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:24:08,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-14 01:24:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:24:08,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-14 01:24:08,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-10-14 01:24:08,797 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:24:24,031 INFO L93 Difference]: Finished difference Result 330 states and 451 transitions. [2024-10-14 01:24:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-14 01:24:24,031 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 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 187 [2024-10-14 01:24:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:24:24,032 INFO L225 Difference]: With dead ends: 330 [2024-10-14 01:24:24,032 INFO L226 Difference]: Without dead ends: 239 [2024-10-14 01:24:24,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2024-10-14 01:24:24,037 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 362 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:24:24,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 3005 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-14 01:24:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-14 01:24:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-10-14 01:24:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3235294117647058) internal successors, (315), 238 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 315 transitions. [2024-10-14 01:24:24,044 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 315 transitions. Word has length 187 [2024-10-14 01:24:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:24:24,044 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 315 transitions. [2024-10-14 01:24:24,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 315 transitions. [2024-10-14 01:24:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-14 01:24:24,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:24:24,045 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:24:24,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 01:24:24,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:24,246 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:24:24,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:24:24,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1558131463, now seen corresponding path program 3 times [2024-10-14 01:24:24,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:24:24,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658342762] [2024-10-14 01:24:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:24:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:24:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:24:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1528 trivial. 0 not checked. [2024-10-14 01:24:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:24:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658342762] [2024-10-14 01:24:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658342762] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:24:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729514290] [2024-10-14 01:24:25,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:24:25,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:25,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:24:25,827 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:24:25,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 01:24:26,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 01:24:26,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:24:26,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:24:26,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:24:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2024-10-14 01:24:26,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:24:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729514290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:24:26,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:24:26,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2024-10-14 01:24:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658027800] [2024-10-14 01:24:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:24:26,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:24:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:24:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:24:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-10-14 01:24:26,912 INFO L87 Difference]: Start difference. First operand 239 states and 315 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:24:27,132 INFO L93 Difference]: Finished difference Result 435 states and 576 transitions. [2024-10-14 01:24:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:24:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 238 [2024-10-14 01:24:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:24:27,133 INFO L225 Difference]: With dead ends: 435 [2024-10-14 01:24:27,133 INFO L226 Difference]: Without dead ends: 240 [2024-10-14 01:24:27,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-10-14 01:24:27,134 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:24:27,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:24:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-10-14 01:24:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-10-14 01:24:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3221757322175731) internal successors, (316), 239 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 316 transitions. [2024-10-14 01:24:27,140 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 316 transitions. Word has length 238 [2024-10-14 01:24:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:24:27,141 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 316 transitions. [2024-10-14 01:24:27,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 316 transitions. [2024-10-14 01:24:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-14 01:24:27,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:24:27,141 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:24:27,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-14 01:24:27,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:27,343 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:24:27,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:24:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1112609847, now seen corresponding path program 1 times [2024-10-14 01:24:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:24:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122469870] [2024-10-14 01:24:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:24:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:24:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:24:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-14 01:24:28,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:24:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122469870] [2024-10-14 01:24:28,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122469870] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:24:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644084007] [2024-10-14 01:24:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:24:28,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:28,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:24:28,983 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:24:28,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 01:24:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:24:29,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 3437 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-10-14 01:24:29,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:24:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 2100 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-14 01:24:30,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:24:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-14 01:24:31,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644084007] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:24:31,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:24:31,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 48, 25] total 72 [2024-10-14 01:24:31,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635744670] [2024-10-14 01:24:31,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:24:31,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-10-14 01:24:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:24:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-10-14 01:24:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=4500, Unknown=0, NotChecked=0, Total=5112 [2024-10-14 01:24:31,440 INFO L87 Difference]: Start difference. First operand 240 states and 316 transitions. Second operand has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:24:38,158 INFO L93 Difference]: Finished difference Result 284 states and 382 transitions. [2024-10-14 01:24:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-14 01:24:38,160 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 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 239 [2024-10-14 01:24:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:24:38,161 INFO L225 Difference]: With dead ends: 284 [2024-10-14 01:24:38,161 INFO L226 Difference]: Without dead ends: 270 [2024-10-14 01:24:38,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=892, Invalid=5428, Unknown=0, NotChecked=0, Total=6320 [2024-10-14 01:24:38,163 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 293 mSDsluCounter, 5589 mSDsCounter, 0 mSdLazyCounter, 7174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 5709 SdHoareTripleChecker+Invalid, 7175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:24:38,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 5709 Invalid, 7175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7174 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-14 01:24:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-14 01:24:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2024-10-14 01:24:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.3234200743494424) internal successors, (356), 269 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 356 transitions. [2024-10-14 01:24:38,171 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 356 transitions. Word has length 239 [2024-10-14 01:24:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:24:38,171 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 356 transitions. [2024-10-14 01:24:38,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 356 transitions. [2024-10-14 01:24:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-14 01:24:38,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:24:38,172 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:24:38,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 01:24:38,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:38,373 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:24:38,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:24:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash -350447209, now seen corresponding path program 2 times [2024-10-14 01:24:38,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:24:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132055187] [2024-10-14 01:24:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:24:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:24:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:24:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-10-14 01:24:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:24:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132055187] [2024-10-14 01:24:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132055187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:24:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27807464] [2024-10-14 01:24:39,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:24:39,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:24:39,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:24:39,226 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:24:39,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 01:24:40,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:24:40,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:24:40,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 3617 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-10-14 01:24:40,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:24:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3047 trivial. 0 not checked. [2024-10-14 01:24:40,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:24:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 1 proven. 1521 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2024-10-14 01:24:41,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27807464] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:24:41,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:24:41,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 39] total 45 [2024-10-14 01:24:41,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444681653] [2024-10-14 01:24:41,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:24:41,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-14 01:24:41,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:24:41,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-14 01:24:41,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1881, Unknown=0, NotChecked=0, Total=1980 [2024-10-14 01:24:41,203 INFO L87 Difference]: Start difference. First operand 270 states and 356 transitions. Second operand has 45 states, 45 states have (on average 4.333333333333333) internal successors, (195), 45 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:24:50,594 WARN L286 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 130 DAG size of output: 9 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-14 01:25:00,025 WARN L286 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 126 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)