./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/lunarlander_80_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_80_safe.c-amalgamation.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 79c201ddac6c3770ba2f943d99e4f8ef71879026b57e5877c57e0afe64a92b76 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:23:28,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:23:29,004 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:23:29,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:23:29,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:23:29,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:23:29,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:23:29,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:23:29,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:23:29,037 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:23:29,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:23:29,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:23:29,038 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:23:29,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:23:29,038 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:23:29,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:23:29,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:23:29,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:23:29,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:23:29,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:23:29,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:23:29,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:23:29,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:23:29,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:23:29,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:23:29,044 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:23:29,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:23:29,045 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:23:29,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:23:29,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:23:29,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:23:29,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:23:29,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:23:29,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:23:29,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:23:29,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:23:29,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:23:29,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:23:29,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:23:29,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:23:29,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:23:29,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:23:29,049 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79c201ddac6c3770ba2f943d99e4f8ef71879026b57e5877c57e0afe64a92b76 [2024-10-11 01:23:29,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:23:29,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:23:29,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:23:29,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:23:29,295 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:23:29,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_80_safe.c-amalgamation.i [2024-10-11 01:23:30,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:23:30,998 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:23:30,999 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_80_safe.c-amalgamation.i [2024-10-11 01:23:31,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6043927dd/3275c3d1087844fb9abe7b2b53a34d5b/FLAGeb4a8a46a [2024-10-11 01:23:31,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6043927dd/3275c3d1087844fb9abe7b2b53a34d5b [2024-10-11 01:23:31,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:23:31,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:23:31,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:23:31,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:23:31,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:23:31,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:23:31" (1/1) ... [2024-10-11 01:23:31,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7851c1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:31, skipping insertion in model container [2024-10-11 01:23:31,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:23:31" (1/1) ... [2024-10-11 01:23:31,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:23:31,968 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/lunarlander_80_safe.c-amalgamation.i[64323,64336] [2024-10-11 01:23:32,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:23:32,222 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:23:32,273 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/lunarlander_80_safe.c-amalgamation.i[64323,64336] [2024-10-11 01:23:32,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:23:32,719 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:23:32,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32 WrapperNode [2024-10-11 01:23:32,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:23:32,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:23:32,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:23:32,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:23:32,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:32,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:32,986 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5468 [2024-10-11 01:23:32,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:23:32,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:23:32,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:23:32,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:23:32,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:32,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,103 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 3, 25, 7, 513, 65, 4097, 65, 257, 5, 14, 70]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 0, 0, 7, 512, 64, 4096, 64, 256, 4, 8, 64]. The 14 writes are split as follows [0, 1, 8, 0, 0, 0, 0, 0, 0, 0, 3, 2]. [2024-10-11 01:23:33,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:23:33,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:23:33,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:23:33,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:23:33,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (1/1) ... [2024-10-11 01:23:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:23:33,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:23:33,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 01:23:33,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 01:23:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-11 01:23:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-11 01:23:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-11 01:23:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-11 01:23:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-11 01:23:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-11 01:23:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-11 01:23:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-11 01:23:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-11 01:23:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-11 01:23:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-11 01:23:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-11 01:23:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-11 01:23:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-11 01:23:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-11 01:23:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:23:33,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 01:23:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 01:23:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 01:23:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 01:23:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 01:23:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 01:23:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 01:23:33,653 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:23:33,655 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:23:39,338 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-10-11 01:23:39,338 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:23:39,543 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:23:39,543 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-11 01:23:39,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:23:39 BoogieIcfgContainer [2024-10-11 01:23:39,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:23:39,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:23:39,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:23:39,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:23:39,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:23:31" (1/3) ... [2024-10-11 01:23:39,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1512d77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:23:39, skipping insertion in model container [2024-10-11 01:23:39,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:23:32" (2/3) ... [2024-10-11 01:23:39,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1512d77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:23:39, skipping insertion in model container [2024-10-11 01:23:39,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:23:39" (3/3) ... [2024-10-11 01:23:39,550 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_80_safe.c-amalgamation.i [2024-10-11 01:23:39,562 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:23:39,562 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:23:39,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:23:39,619 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;@4d27dbf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:23:39,620 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:23:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:23:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:23:39,629 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:39,630 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] [2024-10-11 01:23:39,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:39,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2024-10-11 01:23:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129997498] [2024-10-11 01:23:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:23:40,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:40,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129997498] [2024-10-11 01:23:40,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129997498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:23:40,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:23:40,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:23:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609378063] [2024-10-11 01:23:40,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:40,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 01:23:40,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 01:23:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:23:40,554 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2024-10-11 01:23:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:40,830 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2024-10-11 01:23:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 01:23:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2024-10-11 01:23:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:40,837 INFO L225 Difference]: With dead ends: 113 [2024-10-11 01:23:40,837 INFO L226 Difference]: Without dead ends: 56 [2024-10-11 01:23:40,840 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 [2024-10-11 01:23:40,844 INFO L432 NwaCegarLoop]: 59 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, 59 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:23:40,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:23:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-11 01:23:40,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-11 01:23:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:23:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-10-11 01:23:40,876 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2024-10-11 01:23:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:40,876 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-10-11 01:23:40,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2024-10-11 01:23:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-10-11 01:23:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:23:40,878 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:40,878 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] [2024-10-11 01:23:40,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:23:40,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:40,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2024-10-11 01:23:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267307042] [2024-10-11 01:23:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:40,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:23:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267307042] [2024-10-11 01:23:41,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267307042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:23:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:23:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:23:41,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316463934] [2024-10-11 01:23:41,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:41,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:23:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:23:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:23:41,529 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-11 01:23:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:41,838 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-10-11 01:23:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:23:41,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-10-11 01:23:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:41,840 INFO L225 Difference]: With dead ends: 104 [2024-10-11 01:23:41,841 INFO L226 Difference]: Without dead ends: 56 [2024-10-11 01:23:41,841 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 [2024-10-11 01:23:41,842 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:23:41,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:23:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-11 01:23:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-11 01:23:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 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) [2024-10-11 01:23:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-11 01:23:41,850 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2024-10-11 01:23:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:41,850 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-11 01:23:41,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-11 01:23:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-11 01:23:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:23:41,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:41,854 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] [2024-10-11 01:23:41,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:23:41,854 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:41,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:41,858 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2024-10-11 01:23:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663531576] [2024-10-11 01:23:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:41,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:23:42,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:42,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663531576] [2024-10-11 01:23:42,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663531576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:23:42,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:23:42,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:23:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895491678] [2024-10-11 01:23:42,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:42,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:23:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:23:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:23:42,880 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-11 01:23:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:43,217 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-10-11 01:23:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:23:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-10-11 01:23:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:43,218 INFO L225 Difference]: With dead ends: 87 [2024-10-11 01:23:43,218 INFO L226 Difference]: Without dead ends: 57 [2024-10-11 01:23:43,222 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 [2024-10-11 01:23:43,223 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 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 [2024-10-11 01:23:43,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:23:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-11 01:23:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-11 01:23:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:23:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-11 01:23:43,237 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2024-10-11 01:23:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:43,237 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-11 01:23:43,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-11 01:23:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-11 01:23:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 01:23:43,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:43,239 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] [2024-10-11 01:23:43,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:23:43,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:43,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2024-10-11 01:23:43,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:43,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219918279] [2024-10-11 01:23:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:43,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:23:44,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219918279] [2024-10-11 01:23:44,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219918279] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395625708] [2024-10-11 01:23:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:44,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:44,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:23:44,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:23:44,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 01:23:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:45,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 5933 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 01:23:45,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:23:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:23:45,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:23:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:23:45,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395625708] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:45,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:23:45,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 01:23:45,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782062177] [2024-10-11 01:23:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:45,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:23:45,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:45,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:23:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:23:45,734 INFO L87 Difference]: Start difference. First operand 57 states and 77 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) [2024-10-11 01:23:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:46,050 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2024-10-11 01:23:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:23:46,050 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 [2024-10-11 01:23:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:46,051 INFO L225 Difference]: With dead ends: 78 [2024-10-11 01:23:46,051 INFO L226 Difference]: Without dead ends: 58 [2024-10-11 01:23:46,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:23:46,052 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:23:46,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:23:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-11 01:23:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-11 01:23:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:23:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-10-11 01:23:46,056 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2024-10-11 01:23:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:46,057 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-10-11 01:23:46,057 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) [2024-10-11 01:23:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-10-11 01:23:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 01:23:46,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:46,058 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] [2024-10-11 01:23:46,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 01:23:46,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:46,259 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:46,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2024-10-11 01:23:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:46,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089249583] [2024-10-11 01:23:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:23:48,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:48,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089249583] [2024-10-11 01:23:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089249583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:48,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846532090] [2024-10-11 01:23:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:48,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:48,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:23:48,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:23:48,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 01:23:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:49,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 5951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 01:23:49,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:23:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:23:49,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:23:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:23:49,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846532090] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:49,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:23:49,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 01:23:49,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124732258] [2024-10-11 01:23:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:49,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:23:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:49,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:23:49,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:23:49,642 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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) [2024-10-11 01:23:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:49,995 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-10-11 01:23:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:23:49,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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 [2024-10-11 01:23:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:49,997 INFO L225 Difference]: With dead ends: 69 [2024-10-11 01:23:49,997 INFO L226 Difference]: Without dead ends: 59 [2024-10-11 01:23:49,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:23:50,000 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:23:50,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:23:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-11 01:23:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-11 01:23:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 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) [2024-10-11 01:23:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-10-11 01:23:50,006 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2024-10-11 01:23:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:50,006 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-10-11 01:23:50,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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) [2024-10-11 01:23:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-10-11 01:23:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 01:23:50,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:50,007 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] [2024-10-11 01:23:50,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 01:23:50,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:50,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:50,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2024-10-11 01:23:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483003375] [2024-10-11 01:23:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:23:51,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483003375] [2024-10-11 01:23:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483003375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279552034] [2024-10-11 01:23:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:51,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:51,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:23:51,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:23:51,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 01:23:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:53,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 5969 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:23:53,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:23:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:23:53,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:23:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:23:53,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279552034] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:53,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:23:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 01:23:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021061056] [2024-10-11 01:23:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:53,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:23:53,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:23:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:23:53,267 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-10-11 01:23:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:53,635 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-11 01:23:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:23:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 [2024-10-11 01:23:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:53,637 INFO L225 Difference]: With dead ends: 86 [2024-10-11 01:23:53,637 INFO L226 Difference]: Without dead ends: 60 [2024-10-11 01:23:53,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:23:53,639 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:23:53,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:23:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-11 01:23:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-11 01:23:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 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) [2024-10-11 01:23:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2024-10-11 01:23:53,648 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2024-10-11 01:23:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:53,648 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2024-10-11 01:23:53,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-10-11 01:23:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2024-10-11 01:23:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-11 01:23:53,651 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:53,651 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] [2024-10-11 01:23:53,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 01:23:53,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:53,852 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:53,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2024-10-11 01:23:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145352234] [2024-10-11 01:23:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:53,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:23:54,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145352234] [2024-10-11 01:23:54,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145352234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516838049] [2024-10-11 01:23:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:54,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:54,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:23:54,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:23:54,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 01:23:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:56,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 5975 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:23:56,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:23:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:23:56,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:23:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:23:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516838049] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:56,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:23:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 01:23:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138377392] [2024-10-11 01:23:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:56,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:23:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:23:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:23:56,206 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-10-11 01:23:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:56,415 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2024-10-11 01:23:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:23:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 [2024-10-11 01:23:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:56,417 INFO L225 Difference]: With dead ends: 76 [2024-10-11 01:23:56,417 INFO L226 Difference]: Without dead ends: 61 [2024-10-11 01:23:56,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:23:56,418 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 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 [2024-10-11 01:23:56,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:23:56,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-11 01:23:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-11 01:23:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:23:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-10-11 01:23:56,422 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2024-10-11 01:23:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:56,423 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-10-11 01:23:56,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-10-11 01:23:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-10-11 01:23:56,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-11 01:23:56,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:56,424 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:23:56,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 01:23:56,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 01:23:56,629 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:56,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2024-10-11 01:23:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:56,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449807391] [2024-10-11 01:23:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:56,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:23:57,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:23:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449807391] [2024-10-11 01:23:57,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449807391] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632700692] [2024-10-11 01:23:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:57,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:57,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:23:57,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:23:57,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 01:23:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:23:58,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:23:58,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:23:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:23:58,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:23:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:23:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632700692] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:23:58,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:23:58,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 01:23:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835594586] [2024-10-11 01:23:58,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:23:58,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:23:58,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:23:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:23:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:23:58,909 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-11 01:23:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:23:59,141 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-11 01:23:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:23:59,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-10-11 01:23:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:23:59,142 INFO L225 Difference]: With dead ends: 66 [2024-10-11 01:23:59,142 INFO L226 Difference]: Without dead ends: 62 [2024-10-11 01:23:59,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:23:59,143 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 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 [2024-10-11 01:23:59,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:23:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-11 01:23:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-11 01:23:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 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) [2024-10-11 01:23:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-10-11 01:23:59,147 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2024-10-11 01:23:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:23:59,147 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-10-11 01:23:59,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-11 01:23:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-10-11 01:23:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 01:23:59,148 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:23:59,148 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:23:59,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:23:59,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:23:59,349 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:23:59,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:23:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2024-10-11 01:23:59,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:23:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253432087] [2024-10-11 01:23:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:23:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:23:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:24:00,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253432087] [2024-10-11 01:24:00,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253432087] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:00,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352235177] [2024-10-11 01:24:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:00,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:00,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:00,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:00,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 01:24:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:02,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:24:02,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:24:02,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:24:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352235177] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:24:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-10-11 01:24:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597908695] [2024-10-11 01:24:02,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:24:02,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:24:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:02,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:24:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:24:02,246 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-10-11 01:24:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:02,723 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-11 01:24:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:24:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-10-11 01:24:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:02,724 INFO L225 Difference]: With dead ends: 72 [2024-10-11 01:24:02,724 INFO L226 Difference]: Without dead ends: 63 [2024-10-11 01:24:02,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:24:02,725 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:02,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:24:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-11 01:24:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-11 01:24:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 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) [2024-10-11 01:24:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2024-10-11 01:24:02,732 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 55 [2024-10-11 01:24:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:02,732 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2024-10-11 01:24:02,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-10-11 01:24:02,733 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2024-10-11 01:24:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 01:24:02,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:02,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:02,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 01:24:02,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 01:24:02,938 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:02,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2115565182, now seen corresponding path program 1 times [2024-10-11 01:24:02,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:02,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473011815] [2024-10-11 01:24:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:24:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473011815] [2024-10-11 01:24:03,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473011815] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834012361] [2024-10-11 01:24:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:03,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:03,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:03,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:03,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 01:24:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:05,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 6001 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:24:05,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:24:05,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:24:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834012361] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:05,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:24:05,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-10-11 01:24:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109849829] [2024-10-11 01:24:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:24:05,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:24:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:24:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:24:05,183 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-10-11 01:24:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:05,622 INFO L93 Difference]: Finished difference Result 98 states and 131 transitions. [2024-10-11 01:24:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:24:05,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2024-10-11 01:24:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:05,623 INFO L225 Difference]: With dead ends: 98 [2024-10-11 01:24:05,623 INFO L226 Difference]: Without dead ends: 64 [2024-10-11 01:24:05,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:24:05,624 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:05,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:24:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-11 01:24:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-11 01:24:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 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) [2024-10-11 01:24:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2024-10-11 01:24:05,630 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 58 [2024-10-11 01:24:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:05,630 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2024-10-11 01:24:05,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-10-11 01:24:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2024-10-11 01:24:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 01:24:05,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:05,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:05,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 01:24:05,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:05,836 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:05,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1425434102, now seen corresponding path program 1 times [2024-10-11 01:24:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:05,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771039422] [2024-10-11 01:24:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 01:24:06,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771039422] [2024-10-11 01:24:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771039422] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231697936] [2024-10-11 01:24:06,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:06,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:06,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:06,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:06,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 01:24:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:08,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 6015 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:24:08,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:24:08,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 01:24:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231697936] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:08,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:24:08,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-11 01:24:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94143520] [2024-10-11 01:24:08,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:24:08,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:24:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:24:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:24:08,245 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-10-11 01:24:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:08,632 INFO L93 Difference]: Finished difference Result 87 states and 115 transitions. [2024-10-11 01:24:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:24:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) Word has length 61 [2024-10-11 01:24:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:08,634 INFO L225 Difference]: With dead ends: 87 [2024-10-11 01:24:08,634 INFO L226 Difference]: Without dead ends: 65 [2024-10-11 01:24:08,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:24:08,636 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:08,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:24:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-11 01:24:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-11 01:24:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.328125) internal successors, (85), 64 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) [2024-10-11 01:24:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2024-10-11 01:24:08,647 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 61 [2024-10-11 01:24:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:08,647 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2024-10-11 01:24:08,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-10-11 01:24:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2024-10-11 01:24:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 01:24:08,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:08,648 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:08,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 01:24:08,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 01:24:08,849 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:08,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash -384009668, now seen corresponding path program 1 times [2024-10-11 01:24:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:08,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600269336] [2024-10-11 01:24:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:24:09,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600269336] [2024-10-11 01:24:09,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600269336] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147543229] [2024-10-11 01:24:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:09,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:09,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:09,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:09,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 01:24:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:10,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 6029 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:24:10,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:24:11,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 01:24:11,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147543229] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:11,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:24:11,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-11 01:24:11,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087077065] [2024-10-11 01:24:11,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:24:11,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:24:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:24:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:24:11,049 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2024-10-11 01:24:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:11,457 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2024-10-11 01:24:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:24:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 [2024-10-11 01:24:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:11,459 INFO L225 Difference]: With dead ends: 89 [2024-10-11 01:24:11,459 INFO L226 Difference]: Without dead ends: 66 [2024-10-11 01:24:11,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:24:11,460 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:11,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:24:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-10-11 01:24:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-10-11 01:24:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 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) [2024-10-11 01:24:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-10-11 01:24:11,468 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 64 [2024-10-11 01:24:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:11,469 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-10-11 01:24:11,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-11 01:24:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-10-11 01:24:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 01:24:11,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:11,470 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:11,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 01:24:11,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:11,671 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:11,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1045404766, now seen corresponding path program 1 times [2024-10-11 01:24:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641202862] [2024-10-11 01:24:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 01:24:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641202862] [2024-10-11 01:24:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641202862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173278678] [2024-10-11 01:24:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:12,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:12,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:12,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:12,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 01:24:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:14,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 6032 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:24:14,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:24:14,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:24:14,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173278678] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:14,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:24:14,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-11 01:24:14,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175111133] [2024-10-11 01:24:14,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:24:14,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:24:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:24:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:24:14,104 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2024-10-11 01:24:14,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:14,412 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2024-10-11 01:24:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:24:14,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-11 01:24:14,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:14,413 INFO L225 Difference]: With dead ends: 77 [2024-10-11 01:24:14,413 INFO L226 Difference]: Without dead ends: 67 [2024-10-11 01:24:14,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:24:14,414 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:14,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:24:14,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-11 01:24:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-11 01:24:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 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) [2024-10-11 01:24:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2024-10-11 01:24:14,419 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 65 [2024-10-11 01:24:14,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:14,419 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2024-10-11 01:24:14,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 01:24:14,420 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2024-10-11 01:24:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 01:24:14,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:14,420 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:14,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 01:24:14,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 01:24:14,621 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:14,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:14,622 INFO L85 PathProgramCache]: Analyzing trace with hash 686687241, now seen corresponding path program 1 times [2024-10-11 01:24:14,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:14,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766782882] [2024-10-11 01:24:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:14,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:24:15,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766782882] [2024-10-11 01:24:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766782882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085871819] [2024-10-11 01:24:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:15,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:15,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:15,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:15,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 01:24:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:16,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 6035 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 01:24:16,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 01:24:16,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:24:16,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085871819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:24:16,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:24:16,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-11 01:24:16,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500999540] [2024-10-11 01:24:16,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:24:16,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 01:24:16,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:16,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 01:24:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:24:16,823 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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) [2024-10-11 01:24:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:17,231 INFO L93 Difference]: Finished difference Result 117 states and 156 transitions. [2024-10-11 01:24:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 01:24:17,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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 66 [2024-10-11 01:24:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:17,232 INFO L225 Difference]: With dead ends: 117 [2024-10-11 01:24:17,232 INFO L226 Difference]: Without dead ends: 77 [2024-10-11 01:24:17,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:24:17,232 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 15 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:17,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 219 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:24:17,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-11 01:24:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-11 01:24:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:24:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2024-10-11 01:24:17,238 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 66 [2024-10-11 01:24:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:17,239 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2024-10-11 01:24:17,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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) [2024-10-11 01:24:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2024-10-11 01:24:17,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 01:24:17,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:17,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:17,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 01:24:17,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 01:24:17,441 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:17,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1039071807, now seen corresponding path program 2 times [2024-10-11 01:24:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042403016] [2024-10-11 01:24:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-11 01:24:18,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042403016] [2024-10-11 01:24:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042403016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131446589] [2024-10-11 01:24:18,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:24:18,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:18,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:18,320 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:18,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 01:24:19,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:24:19,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:24:19,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 6100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:24:19,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:24:19,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-11 01:24:19,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131446589] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:24:19,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:24:19,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-11 01:24:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909642072] [2024-10-11 01:24:19,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:24:19,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 01:24:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 01:24:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:24:19,736 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-10-11 01:24:20,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:20,256 INFO L93 Difference]: Finished difference Result 136 states and 181 transitions. [2024-10-11 01:24:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 01:24:20,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) Word has length 76 [2024-10-11 01:24:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:20,257 INFO L225 Difference]: With dead ends: 136 [2024-10-11 01:24:20,257 INFO L226 Difference]: Without dead ends: 87 [2024-10-11 01:24:20,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:24:20,258 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 17 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:20,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:24:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-11 01:24:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-10-11 01:24:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.313953488372093) internal successors, (113), 86 states have internal predecessors, (113), 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) [2024-10-11 01:24:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2024-10-11 01:24:20,264 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 76 [2024-10-11 01:24:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:20,264 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2024-10-11 01:24:20,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-10-11 01:24:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2024-10-11 01:24:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-11 01:24:20,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:20,265 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:20,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 01:24:20,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 01:24:20,469 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:20,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1343816853, now seen corresponding path program 3 times [2024-10-11 01:24:20,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:20,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691525573] [2024-10-11 01:24:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-11 01:24:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691525573] [2024-10-11 01:24:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691525573] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080307229] [2024-10-11 01:24:21,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:24:21,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:21,408 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:21,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 01:24:22,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:24:22,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:24:23,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 6087 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:24:23,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-11 01:24:23,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-11 01:24:23,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080307229] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:23,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:24:23,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2024-10-11 01:24:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201077406] [2024-10-11 01:24:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:24:23,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 01:24:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 01:24:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 01:24:23,108 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-10-11 01:24:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:23,469 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2024-10-11 01:24:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:24:23,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) Word has length 86 [2024-10-11 01:24:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:23,470 INFO L225 Difference]: With dead ends: 144 [2024-10-11 01:24:23,470 INFO L226 Difference]: Without dead ends: 88 [2024-10-11 01:24:23,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 01:24:23,472 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:23,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 165 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:24:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-11 01:24:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-11 01:24:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:24:23,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2024-10-11 01:24:23,481 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 86 [2024-10-11 01:24:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:23,481 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2024-10-11 01:24:23,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-10-11 01:24:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2024-10-11 01:24:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-11 01:24:23,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:23,482 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:23,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 01:24:23,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:23,684 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:23,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash 948634715, now seen corresponding path program 1 times [2024-10-11 01:24:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:23,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436343274] [2024-10-11 01:24:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:23,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-11 01:24:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436343274] [2024-10-11 01:24:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436343274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:24,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683238453] [2024-10-11 01:24:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:24,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:24,746 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:24,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 01:24:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:26,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 6168 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 01:24:26,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:24:26,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-11 01:24:26,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683238453] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:24:26,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:24:26,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 5] total 14 [2024-10-11 01:24:26,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862017081] [2024-10-11 01:24:26,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:24:26,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 01:24:26,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:26,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 01:24:26,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:24:26,180 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 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) [2024-10-11 01:24:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:27,168 INFO L93 Difference]: Finished difference Result 157 states and 207 transitions. [2024-10-11 01:24:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 01:24:27,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 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 87 [2024-10-11 01:24:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:27,169 INFO L225 Difference]: With dead ends: 157 [2024-10-11 01:24:27,169 INFO L226 Difference]: Without dead ends: 98 [2024-10-11 01:24:27,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-11 01:24:27,170 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 26 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:27,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 717 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 01:24:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-11 01:24:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-10-11 01:24:27,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.305263157894737) internal successors, (124), 95 states have internal predecessors, (124), 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) [2024-10-11 01:24:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2024-10-11 01:24:27,174 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 87 [2024-10-11 01:24:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:27,175 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2024-10-11 01:24:27,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 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) [2024-10-11 01:24:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2024-10-11 01:24:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-11 01:24:27,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:27,176 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:27,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 01:24:27,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 01:24:27,377 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:27,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -849187626, now seen corresponding path program 2 times [2024-10-11 01:24:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:27,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579967222] [2024-10-11 01:24:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 01:24:28,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579967222] [2024-10-11 01:24:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579967222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602140518] [2024-10-11 01:24:28,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:24:28,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:28,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:28,417 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:28,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 01:24:29,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:24:29,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:24:29,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 6214 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 01:24:29,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:24:30,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 01:24:30,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602140518] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:24:30,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:24:30,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2024-10-11 01:24:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026908069] [2024-10-11 01:24:30,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:24:30,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 01:24:30,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 01:24:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:24:30,222 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 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) [2024-10-11 01:24:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:32,164 INFO L93 Difference]: Finished difference Result 183 states and 245 transitions. [2024-10-11 01:24:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 01:24:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-11 01:24:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:32,166 INFO L225 Difference]: With dead ends: 183 [2024-10-11 01:24:32,166 INFO L226 Difference]: Without dead ends: 117 [2024-10-11 01:24:32,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-10-11 01:24:32,167 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:32,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 950 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-11 01:24:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-10-11 01:24:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2024-10-11 01:24:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 114 states have internal predecessors, (149), 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) [2024-10-11 01:24:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2024-10-11 01:24:32,173 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 95 [2024-10-11 01:24:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:32,173 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2024-10-11 01:24:32,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 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) [2024-10-11 01:24:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2024-10-11 01:24:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-11 01:24:32,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:32,174 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:32,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 01:24:32,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 01:24:32,379 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:32,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash 944633755, now seen corresponding path program 3 times [2024-10-11 01:24:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:32,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398982105] [2024-10-11 01:24:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-10-11 01:24:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398982105] [2024-10-11 01:24:33,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398982105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31482870] [2024-10-11 01:24:33,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:24:33,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:33,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:33,613 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:33,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 01:24:35,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:24:35,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:24:35,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 6098 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-11 01:24:35,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-11 01:24:35,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-11 01:24:35,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31482870] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:24:35,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:24:35,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 15 [2024-10-11 01:24:35,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397462550] [2024-10-11 01:24:35,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:24:35,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 01:24:35,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 01:24:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:24:35,630 INFO L87 Difference]: Start difference. First operand 115 states and 149 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 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) [2024-10-11 01:24:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:36,410 INFO L93 Difference]: Finished difference Result 229 states and 303 transitions. [2024-10-11 01:24:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 01:24:36,411 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 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 114 [2024-10-11 01:24:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:36,412 INFO L225 Difference]: With dead ends: 229 [2024-10-11 01:24:36,412 INFO L226 Difference]: Without dead ends: 145 [2024-10-11 01:24:36,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:24:36,413 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 60 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:36,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 372 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 01:24:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-11 01:24:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-10-11 01:24:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3043478260869565) internal successors, (180), 138 states have internal predecessors, (180), 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) [2024-10-11 01:24:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 180 transitions. [2024-10-11 01:24:36,428 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 180 transitions. Word has length 114 [2024-10-11 01:24:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:36,429 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 180 transitions. [2024-10-11 01:24:36,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 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) [2024-10-11 01:24:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 180 transitions. [2024-10-11 01:24:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-11 01:24:36,430 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:36,430 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:36,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 01:24:36,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:36,632 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:36,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:36,632 INFO L85 PathProgramCache]: Analyzing trace with hash -245213346, now seen corresponding path program 4 times [2024-10-11 01:24:36,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:36,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130022609] [2024-10-11 01:24:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:36,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-10-11 01:24:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130022609] [2024-10-11 01:24:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130022609] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881829157] [2024-10-11 01:24:38,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:24:38,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:38,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:38,048 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:38,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 01:24:39,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:24:39,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:24:39,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 6395 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 01:24:39,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:24:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-10-11 01:24:39,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:24:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-11 01:24:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881829157] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:24:39,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:24:39,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 8] total 21 [2024-10-11 01:24:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613401202] [2024-10-11 01:24:39,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:24:39,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 01:24:39,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:24:39,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 01:24:39,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:24:39,722 INFO L87 Difference]: Start difference. First operand 139 states and 180 transitions. Second operand has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 21 states have internal predecessors, (119), 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) [2024-10-11 01:24:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:24:41,099 INFO L93 Difference]: Finished difference Result 268 states and 357 transitions. [2024-10-11 01:24:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:24:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 21 states have internal predecessors, (119), 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 127 [2024-10-11 01:24:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:24:41,101 INFO L225 Difference]: With dead ends: 268 [2024-10-11 01:24:41,101 INFO L226 Difference]: Without dead ends: 161 [2024-10-11 01:24:41,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2024-10-11 01:24:41,101 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 52 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:24:41,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 640 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-11 01:24:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-10-11 01:24:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-10-11 01:24:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.30625) internal successors, (209), 160 states have internal predecessors, (209), 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) [2024-10-11 01:24:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2024-10-11 01:24:41,112 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 127 [2024-10-11 01:24:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:24:41,113 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2024-10-11 01:24:41,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 21 states have internal predecessors, (119), 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) [2024-10-11 01:24:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2024-10-11 01:24:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-11 01:24:41,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:24:41,114 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 7, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:24:41,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 01:24:41,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:41,315 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:24:41,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:24:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1899202338, now seen corresponding path program 5 times [2024-10-11 01:24:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:24:41,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258120741] [2024-10-11 01:24:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:24:41,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:24:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:24:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2024-10-11 01:24:42,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:24:42,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258120741] [2024-10-11 01:24:42,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258120741] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:24:42,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787176372] [2024-10-11 01:24:42,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:24:42,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:24:42,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:24:42,903 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:24:42,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process