./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/cartpole_12_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/cartpole_12_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 27a1adeda78f1327efd3db595f1f2af74a09c93b7891662312ede014768aaa9f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 00:59:43,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 00:59:43,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 00:59:43,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 00:59:43,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 00:59:43,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 00:59:43,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 00:59:43,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 00:59:43,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 00:59:43,922 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 00:59:43,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 00:59:43,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 00:59:43,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 00:59:43,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 00:59:43,925 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 00:59:43,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 00:59:43,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 00:59:43,926 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 00:59:43,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 00:59:43,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 00:59:43,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 00:59:43,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 00:59:43,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 00:59:43,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 00:59:43,928 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 00:59:43,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 00:59:43,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 00:59:43,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 00:59:43,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 00:59:43,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 00:59:43,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 00:59:43,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 00:59:43,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:59:43,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 00:59:43,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 00:59:43,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 00:59:43,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 00:59:43,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 00:59:43,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 00:59:43,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 00:59:43,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 00:59:43,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 00:59:43,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a1adeda78f1327efd3db595f1f2af74a09c93b7891662312ede014768aaa9f [2024-10-14 00:59:44,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 00:59:44,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 00:59:44,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 00:59:44,213 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 00:59:44,213 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 00:59:44,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_12_safe.c-amalgamation.i [2024-10-14 00:59:45,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 00:59:45,999 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 00:59:46,001 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_12_safe.c-amalgamation.i [2024-10-14 00:59:46,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260ff1fe4/46464f9a8ad9428fa54f07d178572072/FLAG3fbbf707d [2024-10-14 00:59:46,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260ff1fe4/46464f9a8ad9428fa54f07d178572072 [2024-10-14 00:59:46,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 00:59:46,051 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 00:59:46,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 00:59:46,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 00:59:46,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 00:59:46,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:59:46" (1/1) ... [2024-10-14 00:59:46,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eaa4d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:46, skipping insertion in model container [2024-10-14 00:59:46,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:59:46" (1/1) ... [2024-10-14 00:59:46,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 00:59:46,700 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/cartpole_12_safe.c-amalgamation.i[63701,63714] [2024-10-14 00:59:46,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:59:47,100 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 00:59:47,155 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/cartpole_12_safe.c-amalgamation.i[63701,63714] [2024-10-14 00:59:47,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:59:47,545 INFO L204 MainTranslator]: Completed translation [2024-10-14 00:59:47,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47 WrapperNode [2024-10-14 00:59:47,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 00:59:47,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 00:59:47,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 00:59:47,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 00:59:47,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:47,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:47,886 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-14 00:59:47,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 00:59:47,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 00:59:47,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 00:59:47,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 00:59:47,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:47,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:47,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,014 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 65, 4097, 65, 129, 3, 10, 3, 13, 70]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 64, 4096, 64, 128, 2, 4, 0, 0, 64]. The 10 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 4, 2]. [2024-10-14 00:59:48,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 00:59:48,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 00:59:48,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 00:59:48,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 00:59:48,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (1/1) ... [2024-10-14 00:59:48,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:59:48,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:59:48,230 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 00:59:48,233 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 00:59:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 00:59:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 00:59:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 00:59:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 00:59:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 00:59:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-14 00:59:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-14 00:59:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-14 00:59:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-14 00:59:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-14 00:59:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-14 00:59:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-14 00:59:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 00:59:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 00:59:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 00:59:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 00:59:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 00:59:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 00:59:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-14 00:59:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 00:59:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 00:59:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 00:59:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 00:59:48,559 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 00:59:48,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 00:59:53,920 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-14 00:59:53,921 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 00:59:54,215 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 00:59:54,215 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-14 00:59:54,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:59:54 BoogieIcfgContainer [2024-10-14 00:59:54,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 00:59:54,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 00:59:54,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 00:59:54,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 00:59:54,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:59:46" (1/3) ... [2024-10-14 00:59:54,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d297d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:59:54, skipping insertion in model container [2024-10-14 00:59:54,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:47" (2/3) ... [2024-10-14 00:59:54,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d297d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:59:54, skipping insertion in model container [2024-10-14 00:59:54,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:59:54" (3/3) ... [2024-10-14 00:59:54,224 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_12_safe.c-amalgamation.i [2024-10-14 00:59:54,239 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 00:59:54,240 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 00:59:54,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 00:59:54,308 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;@3dd093f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 00:59:54,310 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 00:59:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 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 00:59:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 00:59:54,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:59:54,322 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] [2024-10-14 00:59:54,322 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:59:54,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:59:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-14 00:59:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:59:54,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241294755] [2024-10-14 00:59:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:59:54,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:59:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:59:55,327 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 00:59:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:59:55,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241294755] [2024-10-14 00:59:55,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241294755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:59:55,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:59:55,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:59:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149562641] [2024-10-14 00:59:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:59:55,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 00:59:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:59:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 00:59:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 00:59:55,362 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 00:59:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:59:55,625 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-14 00:59:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 00:59:55,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2024-10-14 00:59:55,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:59:55,635 INFO L225 Difference]: With dead ends: 89 [2024-10-14 00:59:55,635 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 00:59:55,638 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 00:59:55,641 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 00:59:55,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 00:59:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 00:59:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-14 00:59:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 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 00:59:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-14 00:59:55,677 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-14 00:59:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:59:55,677 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-14 00:59:55,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 00:59:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-14 00:59:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 00:59:55,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:59:55,679 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] [2024-10-14 00:59:55,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 00:59:55,680 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:59:55,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:59:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-14 00:59:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:59:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947001468] [2024-10-14 00:59:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:59:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:59:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:59:56,405 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 00:59:56,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:59:56,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947001468] [2024-10-14 00:59:56,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947001468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:59:56,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:59:56,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:59:56,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635189078] [2024-10-14 00:59:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:59:56,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:59:56,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:59:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:59:56,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:59:56,412 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 00:59:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:59:56,640 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-14 00:59:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:59:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2024-10-14 00:59:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:59:56,643 INFO L225 Difference]: With dead ends: 80 [2024-10-14 00:59:56,644 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 00:59:56,644 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 00:59:56,645 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 00:59:56,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 00:59:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 00:59:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-14 00:59:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 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 00:59:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-14 00:59:56,653 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-14 00:59:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:59:56,654 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-14 00:59:56,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 00:59:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-14 00:59:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 00:59:56,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:59:56,655 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] [2024-10-14 00:59:56,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 00:59:56,656 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:59:56,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:59:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-14 00:59:56,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:59:56,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608383621] [2024-10-14 00:59:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:59:56,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:59:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:59:57,640 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 00:59:57,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:59:57,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608383621] [2024-10-14 00:59:57,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608383621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:59:57,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:59:57,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:59:57,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121796002] [2024-10-14 00:59:57,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:59:57,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:59:57,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:59:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:59:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:59:57,643 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 00:59:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:59:57,910 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-14 00:59:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:59:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2024-10-14 00:59:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:59:57,912 INFO L225 Difference]: With dead ends: 75 [2024-10-14 00:59:57,914 INFO L226 Difference]: Without dead ends: 45 [2024-10-14 00:59:57,914 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 00:59:57,915 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:59:57,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 00:59:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-14 00:59:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-14 00:59:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 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 00:59:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-14 00:59:57,926 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-14 00:59:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:59:57,926 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-14 00:59:57,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 00:59:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-14 00:59:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 00:59:57,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:59:57,928 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] [2024-10-14 00:59:57,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 00:59:57,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:59:57,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:59:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-14 00:59:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:59:57,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761977441] [2024-10-14 00:59:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:59:57,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:59:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:59:58,922 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 00:59:58,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:59:58,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761977441] [2024-10-14 00:59:58,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761977441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:59:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617051565] [2024-10-14 00:59:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:59:58,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:59:58,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:59:58,926 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 00:59:58,931 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 01:00:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:00,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:00:00,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:00,265 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 01:00:00,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:00,283 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 01:00:00,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617051565] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:00,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:00,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:00:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976201809] [2024-10-14 01:00:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:00,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:00:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:00:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:00:00,286 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 01:00:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:00,504 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-14 01:00:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:00:00,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2024-10-14 01:00:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:00,506 INFO L225 Difference]: With dead ends: 66 [2024-10-14 01:00:00,506 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 01:00:00,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 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 01:00:00,507 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:00,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 01:00:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-14 01:00:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 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 01:00:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-14 01:00:00,513 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-14 01:00:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:00,513 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-14 01:00:00,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 01:00:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-14 01:00:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-14 01:00:00,514 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:00,514 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] [2024-10-14 01:00:00,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 01:00:00,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:00,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:00,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-14 01:00:00,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:00,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258876286] [2024-10-14 01:00:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:01,640 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 01:00:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258876286] [2024-10-14 01:00:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258876286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657366005] [2024-10-14 01:00:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:01,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:01,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:01,645 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 01:00:01,647 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 01:00:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:02,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:00:02,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:02,684 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 01:00:02,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:02,700 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 01:00:02,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657366005] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:02,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:02,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:00:02,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245280048] [2024-10-14 01:00:02,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:02,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:00:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:00:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:00:02,707 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 01:00:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:02,931 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-14 01:00:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:00:02,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2024-10-14 01:00:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:02,933 INFO L225 Difference]: With dead ends: 57 [2024-10-14 01:00:02,933 INFO L226 Difference]: Without dead ends: 47 [2024-10-14 01:00:02,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 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 01:00:02,934 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:02,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-14 01:00:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-14 01:00:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:00:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-14 01:00:02,944 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-14 01:00:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:02,944 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-14 01:00:02,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 01:00:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-14 01:00:02,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 01:00:02,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:02,946 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] [2024-10-14 01:00:02,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 01:00:03,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:03,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:03,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-14 01:00:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:03,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354314346] [2024-10-14 01:00:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:03,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:04,089 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 01:00:04,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:04,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354314346] [2024-10-14 01:00:04,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354314346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:04,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167850606] [2024-10-14 01:00:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:04,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:04,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:04,093 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 01:00:04,095 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 01:00:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:05,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:00:05,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:05,171 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 01:00:05,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:05,186 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 01:00:05,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167850606] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:05,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:05,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:00:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067640573] [2024-10-14 01:00:05,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:05,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:00:05,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:05,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:00:05,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:00:05,188 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 01:00:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:05,353 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-14 01:00:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:00:05,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2024-10-14 01:00:05,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:05,354 INFO L225 Difference]: With dead ends: 74 [2024-10-14 01:00:05,355 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 01:00:05,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:00:05,356 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:05,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 01:00:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-14 01:00:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 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 01:00:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-14 01:00:05,360 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-14 01:00:05,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:05,361 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-14 01:00:05,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 01:00:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-14 01:00:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 01:00:05,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:05,362 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] [2024-10-14 01:00:05,385 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 01:00:05,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:05,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:05,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-14 01:00:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:05,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630055733] [2024-10-14 01:00:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:06,334 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 01:00:06,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:06,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630055733] [2024-10-14 01:00:06,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630055733] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:06,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484626885] [2024-10-14 01:00:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:06,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:06,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:06,337 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 01:00:06,338 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 01:00:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:07,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:00:07,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:07,337 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 01:00:07,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:07,353 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 01:00:07,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484626885] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:07,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:00:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921303807] [2024-10-14 01:00:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:07,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:00:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:00:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:00:07,356 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 01:00:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:07,561 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-14 01:00:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:00:07,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-10-14 01:00:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:07,562 INFO L225 Difference]: With dead ends: 64 [2024-10-14 01:00:07,562 INFO L226 Difference]: Without dead ends: 49 [2024-10-14 01:00:07,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 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 01:00:07,563 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:07,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-14 01:00:07,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-14 01:00:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 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 01:00:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-14 01:00:07,570 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-14 01:00:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:07,570 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-14 01:00:07,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 01:00:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-14 01:00:07,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 01:00:07,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:07,572 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] [2024-10-14 01:00:07,605 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 01:00:07,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:07,772 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:07,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-14 01:00:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077923876] [2024-10-14 01:00:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:08,598 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 01:00:08,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:08,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077923876] [2024-10-14 01:00:08,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077923876] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:08,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247027925] [2024-10-14 01:00:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:08,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:08,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:08,602 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 01:00:08,603 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 01:00:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:09,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:00:09,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:09,645 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 01:00:09,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:00:09,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247027925] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:09,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:09,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:00:09,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665584974] [2024-10-14 01:00:09,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:09,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:00:09,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:09,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:00:09,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:00:09,662 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 01:00:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:09,853 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-14 01:00:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:00:09,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-10-14 01:00:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:09,854 INFO L225 Difference]: With dead ends: 54 [2024-10-14 01:00:09,854 INFO L226 Difference]: Without dead ends: 50 [2024-10-14 01:00:09,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 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 01:00:09,855 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:09,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:09,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-14 01:00:09,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-14 01:00:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 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 01:00:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-14 01:00:09,865 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-14 01:00:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:09,865 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-14 01:00:09,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 01:00:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-14 01:00:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 01:00:09,866 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:09,867 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] [2024-10-14 01:00:09,891 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 01:00:10,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:10,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:10,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:10,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-14 01:00:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:10,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844098225] [2024-10-14 01:00:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:10,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:00:10,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:10,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844098225] [2024-10-14 01:00:10,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844098225] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:10,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794460437] [2024-10-14 01:00:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:10,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:10,823 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 01:00:10,824 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 01:00:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:11,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-14 01:00:11,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:00:11,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:00:11,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794460437] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:11,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:11,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-10-14 01:00:11,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547131627] [2024-10-14 01:00:11,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:11,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:00:11,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:00:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:00:11,879 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 01:00:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:12,062 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-10-14 01:00:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:00:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2024-10-14 01:00:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:12,063 INFO L225 Difference]: With dead ends: 84 [2024-10-14 01:00:12,063 INFO L226 Difference]: Without dead ends: 51 [2024-10-14 01:00:12,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:00:12,064 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:12,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-14 01:00:12,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-14 01:00:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 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 01:00:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-14 01:00:12,069 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 43 [2024-10-14 01:00:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:12,069 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-14 01:00:12,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 01:00:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-14 01:00:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-14 01:00:12,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:12,070 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] [2024-10-14 01:00:12,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 01:00:12,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:12,271 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:12,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:12,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1912228973, now seen corresponding path program 1 times [2024-10-14 01:00:12,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:12,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103137349] [2024-10-14 01:00:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:12,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:00:12,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:12,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103137349] [2024-10-14 01:00:12,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103137349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:12,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586224650] [2024-10-14 01:00:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:12,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:12,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:12,978 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 01:00:12,979 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 01:00:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:13,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 5307 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:00:13,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:00:13,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:00:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586224650] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:13,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:13,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-14 01:00:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381653958] [2024-10-14 01:00:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:13,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:00:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:00:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:00:13,956 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 01:00:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:14,161 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2024-10-14 01:00:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:00:14,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2024-10-14 01:00:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:14,162 INFO L225 Difference]: With dead ends: 73 [2024-10-14 01:00:14,162 INFO L226 Difference]: Without dead ends: 52 [2024-10-14 01:00:14,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:00:14,163 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:14,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-14 01:00:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-10-14 01:00:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 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 01:00:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2024-10-14 01:00:14,167 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 46 [2024-10-14 01:00:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:14,167 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2024-10-14 01:00:14,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 01:00:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2024-10-14 01:00:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 01:00:14,168 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:14,168 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] [2024-10-14 01:00:14,192 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 01:00:14,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:14,369 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:14,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1455903148, now seen corresponding path program 1 times [2024-10-14 01:00:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464519973] [2024-10-14 01:00:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 01:00:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464519973] [2024-10-14 01:00:15,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464519973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675120906] [2024-10-14 01:00:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:15,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:15,044 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 01:00:15,045 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 01:00:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:15,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 5321 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:00:15,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:00:16,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:00:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675120906] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-14 01:00:16,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079519492] [2024-10-14 01:00:16,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:16,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:00:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:00:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:00:16,046 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 01:00:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:16,272 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2024-10-14 01:00:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:00:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2024-10-14 01:00:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:16,273 INFO L225 Difference]: With dead ends: 75 [2024-10-14 01:00:16,273 INFO L226 Difference]: Without dead ends: 53 [2024-10-14 01:00:16,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:00:16,274 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:16,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:16,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-14 01:00:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-14 01:00:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 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 01:00:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2024-10-14 01:00:16,279 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 49 [2024-10-14 01:00:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:16,279 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2024-10-14 01:00:16,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 01:00:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2024-10-14 01:00:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-14 01:00:16,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:16,281 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] [2024-10-14 01:00:16,308 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 01:00:16,481 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,SelfDestructingSolverStorable10 [2024-10-14 01:00:16,481 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:16,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:16,482 INFO L85 PathProgramCache]: Analyzing trace with hash -281320841, now seen corresponding path program 1 times [2024-10-14 01:00:16,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:16,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118869673] [2024-10-14 01:00:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:16,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 01:00:17,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:17,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118869673] [2024-10-14 01:00:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118869673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:17,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297204597] [2024-10-14 01:00:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:17,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:17,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:17,115 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 01:00:17,116 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 01:00:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:18,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 5324 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:00:18,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 01:00:18,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 01:00:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297204597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:00:18,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:00:18,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-14 01:00:18,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647201691] [2024-10-14 01:00:18,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:00:18,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 01:00:18,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:18,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 01:00:18,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:00:18,173 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 01:00:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:18,493 INFO L93 Difference]: Finished difference Result 101 states and 136 transitions. [2024-10-14 01:00:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 01:00:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 50 [2024-10-14 01:00:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:18,494 INFO L225 Difference]: With dead ends: 101 [2024-10-14 01:00:18,494 INFO L226 Difference]: Without dead ends: 63 [2024-10-14 01:00:18,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 01:00:18,495 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:18,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:00:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-14 01:00:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-14 01:00:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 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 01:00:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-10-14 01:00:18,504 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 50 [2024-10-14 01:00:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:18,504 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-10-14 01:00:18,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 01:00:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-10-14 01:00:18,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-14 01:00:18,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:18,506 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:00:18,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 01:00:18,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:18,707 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:18,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash 446001259, now seen corresponding path program 2 times [2024-10-14 01:00:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:18,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841250884] [2024-10-14 01:00:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:00:19,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841250884] [2024-10-14 01:00:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841250884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713634813] [2024-10-14 01:00:19,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:00:19,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:19,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:19,477 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 01:00:19,479 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 01:00:20,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:00:20,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:00:20,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 5389 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 01:00:20,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:00:20,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 01:00:20,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713634813] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:20,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:20,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-14 01:00:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118074672] [2024-10-14 01:00:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:20,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:00:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:00:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:00:20,496 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 01:00:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:20,693 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2024-10-14 01:00:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:00:20,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 60 [2024-10-14 01:00:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:20,694 INFO L225 Difference]: With dead ends: 73 [2024-10-14 01:00:20,694 INFO L226 Difference]: Without dead ends: 64 [2024-10-14 01:00:20,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:00:20,694 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:20,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-14 01:00:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-14 01:00:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 63 states have internal predecessors, (83), 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 01:00:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-10-14 01:00:20,700 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 60 [2024-10-14 01:00:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:20,701 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-10-14 01:00:20,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 01:00:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-10-14 01:00:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 01:00:20,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:20,702 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:00:20,728 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 01:00:20,902 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,SelfDestructingSolverStorable12 [2024-10-14 01:00:20,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:20,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1995370305, now seen corresponding path program 1 times [2024-10-14 01:00:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152738561] [2024-10-14 01:00:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 01:00:21,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152738561] [2024-10-14 01:00:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152738561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631469055] [2024-10-14 01:00:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:21,681 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 01:00:21,682 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 01:00:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:22,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 5403 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:00:22,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:00:22,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 01:00:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631469055] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:22,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:00:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2024-10-14 01:00:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107559139] [2024-10-14 01:00:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:00:22,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:00:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:00:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:00:22,771 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:00:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:22,964 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2024-10-14 01:00:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:00:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-14 01:00:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:22,965 INFO L225 Difference]: With dead ends: 75 [2024-10-14 01:00:22,965 INFO L226 Difference]: Without dead ends: 65 [2024-10-14 01:00:22,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:00:22,965 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:22,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:00:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-14 01:00:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-14 01:00:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 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 01:00:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2024-10-14 01:00:22,970 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 63 [2024-10-14 01:00:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:22,971 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2024-10-14 01:00:22,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:00:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2024-10-14 01:00:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 01:00:22,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:22,972 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:00:22,995 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 01:00:23,172 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,SelfDestructingSolverStorable13 [2024-10-14 01:00:23,172 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:23,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -917582850, now seen corresponding path program 1 times [2024-10-14 01:00:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:23,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601172917] [2024-10-14 01:00:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 01:00:23,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:23,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601172917] [2024-10-14 01:00:23,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601172917] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:23,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139630907] [2024-10-14 01:00:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:23,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:23,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:23,914 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 01:00:23,916 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 01:00:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:24,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 5406 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 01:00:24,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 01:00:25,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 01:00:25,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139630907] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:00:25,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:00:25,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 12 [2024-10-14 01:00:25,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905430866] [2024-10-14 01:00:25,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:00:25,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 01:00:25,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 01:00:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:00:25,082 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 01:00:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:25,515 INFO L93 Difference]: Finished difference Result 119 states and 157 transitions. [2024-10-14 01:00:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 01:00:25,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 64 [2024-10-14 01:00:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:25,516 INFO L225 Difference]: With dead ends: 119 [2024-10-14 01:00:25,516 INFO L226 Difference]: Without dead ends: 70 [2024-10-14 01:00:25,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-10-14 01:00:25,517 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:25,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 367 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:00:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-14 01:00:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-10-14 01:00:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 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 01:00:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2024-10-14 01:00:25,523 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 64 [2024-10-14 01:00:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:25,523 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2024-10-14 01:00:25,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 01:00:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2024-10-14 01:00:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 01:00:25,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:25,525 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:25,551 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 01:00:25,725 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,SelfDestructingSolverStorable14 [2024-10-14 01:00:25,725 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:25,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1396747903, now seen corresponding path program 1 times [2024-10-14 01:00:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:25,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262874066] [2024-10-14 01:00:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:25,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 01:00:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262874066] [2024-10-14 01:00:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262874066] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977581629] [2024-10-14 01:00:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:26,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:26,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:26,481 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 01:00:26,483 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 01:00:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:27,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 5438 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:00:27,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 01:00:27,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 01:00:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977581629] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:00:27,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:00:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2024-10-14 01:00:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966212974] [2024-10-14 01:00:27,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:00:27,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 01:00:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 01:00:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:00:27,657 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 01:00:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:28,005 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2024-10-14 01:00:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 01:00:28,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 69 [2024-10-14 01:00:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:28,006 INFO L225 Difference]: With dead ends: 133 [2024-10-14 01:00:28,006 INFO L226 Difference]: Without dead ends: 80 [2024-10-14 01:00:28,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:00:28,007 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:28,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 306 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:00:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-14 01:00:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-14 01:00:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 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 01:00:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2024-10-14 01:00:28,013 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 69 [2024-10-14 01:00:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:28,013 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2024-10-14 01:00:28,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 01:00:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2024-10-14 01:00:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-14 01:00:28,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:28,015 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2024-10-14 01:00:28,046 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 01:00:28,215 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,SelfDestructingSolverStorable15 [2024-10-14 01:00:28,216 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:28,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash 297711965, now seen corresponding path program 2 times [2024-10-14 01:00:28,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:28,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554995447] [2024-10-14 01:00:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-14 01:00:29,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:29,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554995447] [2024-10-14 01:00:29,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554995447] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:29,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708738745] [2024-10-14 01:00:29,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:00:29,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:29,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:29,095 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 01:00:29,098 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 01:00:30,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:00:30,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:00:30,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 5503 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 01:00:30,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 01:00:30,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-14 01:00:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708738745] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:00:30,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:00:30,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-14 01:00:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747411110] [2024-10-14 01:00:30,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:00:30,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 01:00:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 01:00:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-14 01:00:30,369 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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 01:00:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:31,070 INFO L93 Difference]: Finished difference Result 139 states and 187 transitions. [2024-10-14 01:00:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 01:00:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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 79 [2024-10-14 01:00:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:31,072 INFO L225 Difference]: With dead ends: 139 [2024-10-14 01:00:31,072 INFO L226 Difference]: Without dead ends: 103 [2024-10-14 01:00:31,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:00:31,073 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:31,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 519 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 01:00:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-14 01:00:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-14 01:00:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.31) internal successors, (131), 100 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 01:00:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2024-10-14 01:00:31,080 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 79 [2024-10-14 01:00:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:31,080 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2024-10-14 01:00:31,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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 01:00:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2024-10-14 01:00:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-14 01:00:31,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:31,082 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 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] [2024-10-14 01:00:31,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 01:00:31,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:31,283 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:31,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -152255511, now seen corresponding path program 3 times [2024-10-14 01:00:31,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:31,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133809656] [2024-10-14 01:00:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-14 01:00:32,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133809656] [2024-10-14 01:00:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133809656] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818494505] [2024-10-14 01:00:32,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:00:32,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:32,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:32,437 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 01:00:32,439 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 01:00:33,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 01:00:33,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:00:33,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 01:00:33,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-10-14 01:00:33,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-10-14 01:00:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818494505] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:00:33,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:00:33,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 20 [2024-10-14 01:00:33,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665299856] [2024-10-14 01:00:33,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:00:33,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 01:00:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 01:00:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-10-14 01:00:33,919 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 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 01:00:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:34,546 INFO L93 Difference]: Finished difference Result 178 states and 235 transitions. [2024-10-14 01:00:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 01:00:34,546 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 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 100 [2024-10-14 01:00:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:34,547 INFO L225 Difference]: With dead ends: 178 [2024-10-14 01:00:34,547 INFO L226 Difference]: Without dead ends: 124 [2024-10-14 01:00:34,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:00:34,548 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 40 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:34,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 533 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 01:00:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-14 01:00:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2024-10-14 01:00:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 115 states have internal predecessors, (151), 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 01:00:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 151 transitions. [2024-10-14 01:00:34,556 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 151 transitions. Word has length 100 [2024-10-14 01:00:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:34,557 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 151 transitions. [2024-10-14 01:00:34,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 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 01:00:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 151 transitions. [2024-10-14 01:00:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-14 01:00:34,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:34,558 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:00:34,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-14 01:00:34,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 01:00:34,759 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:34,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash 439354096, now seen corresponding path program 4 times [2024-10-14 01:00:34,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:34,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655073130] [2024-10-14 01:00:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:34,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:00:35,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655073130] [2024-10-14 01:00:35,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655073130] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347072354] [2024-10-14 01:00:35,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 01:00:35,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:35,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:35,841 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 01:00:35,841 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 01:00:36,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 01:00:36,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:00:36,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-14 01:00:36,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:00:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:00:36,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:00:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 66 proven. 140 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 01:00:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347072354] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:00:37,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:00:37,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 18] total 27 [2024-10-14 01:00:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932439552] [2024-10-14 01:00:37,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:00:37,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-14 01:00:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:00:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-14 01:00:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-10-14 01:00:37,324 INFO L87 Difference]: Start difference. First operand 116 states and 151 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 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 01:00:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:00:38,508 INFO L93 Difference]: Finished difference Result 209 states and 282 transitions. [2024-10-14 01:00:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 01:00:38,509 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 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 107 [2024-10-14 01:00:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:00:38,509 INFO L225 Difference]: With dead ends: 209 [2024-10-14 01:00:38,509 INFO L226 Difference]: Without dead ends: 143 [2024-10-14 01:00:38,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 01:00:38,511 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 84 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 01:00:38,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 787 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 01:00:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-14 01:00:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-10-14 01:00:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3169014084507042) internal successors, (187), 142 states have internal predecessors, (187), 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 01:00:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 187 transitions. [2024-10-14 01:00:38,521 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 187 transitions. Word has length 107 [2024-10-14 01:00:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:00:38,521 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 187 transitions. [2024-10-14 01:00:38,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 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 01:00:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 187 transitions. [2024-10-14 01:00:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-14 01:00:38,523 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:00:38,523 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 10, 10, 10, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:00:38,555 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 01:00:38,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:38,724 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:00:38,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:00:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1202936316, now seen corresponding path program 5 times [2024-10-14 01:00:38,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:00:38,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787438776] [2024-10-14 01:00:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:00:38,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:00:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:00:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:00:40,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:00:40,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787438776] [2024-10-14 01:00:40,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787438776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:00:40,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268363735] [2024-10-14 01:00:40,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 01:00:40,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:00:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:00:40,356 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 01:00:40,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process