./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_94_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_94_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5230d7a279c4713014233658372b67db98cad6ded3cc9ffdf91e14e5bf48302d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 01:34:32,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 01:34:32,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 01:34:32,935 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 01:34:32,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 01:34:32,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 01:34:32,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 01:34:32,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 01:34:32,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 01:34:32,962 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 01:34:32,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 01:34:32,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 01:34:32,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 01:34:32,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 01:34:32,963 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 01:34:32,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 01:34:32,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 01:34:32,964 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 01:34:32,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 01:34:32,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 01:34:32,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 01:34:32,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 01:34:32,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 01:34:32,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 01:34:32,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 01:34:32,967 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 01:34:32,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 01:34:32,967 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 01:34:32,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 01:34:32,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 01:34:32,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 01:34:32,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 01:34:32,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:34:32,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 01:34:32,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 01:34:32,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 01:34:32,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 01:34:32,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 01:34:32,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 01:34:32,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 01:34:32,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 01:34:32,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 01:34:32,984 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5230d7a279c4713014233658372b67db98cad6ded3cc9ffdf91e14e5bf48302d [2024-10-14 01:34:33,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 01:34:33,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 01:34:33,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 01:34:33,296 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 01:34:33,296 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 01:34:33,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_94_safe.c-amalgamation.i [2024-10-14 01:34:34,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 01:34:35,042 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 01:34:35,043 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_94_safe.c-amalgamation.i [2024-10-14 01:34:35,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e531977cb/952ea8ba706e42ce9abbd7d3c4bb80e2/FLAGda143c50b [2024-10-14 01:34:35,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e531977cb/952ea8ba706e42ce9abbd7d3c4bb80e2 [2024-10-14 01:34:35,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 01:34:35,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 01:34:35,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 01:34:35,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 01:34:35,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 01:34:35,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:34:35" (1/1) ... [2024-10-14 01:34:35,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b6b0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:35, skipping insertion in model container [2024-10-14 01:34:35,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:34:35" (1/1) ... [2024-10-14 01:34:35,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 01:34:35,710 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_94_safe.c-amalgamation.i[64325,64338] [2024-10-14 01:34:35,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:34:35,970 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 01:34:36,009 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_94_safe.c-amalgamation.i[64325,64338] [2024-10-14 01:34:36,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:34:36,373 INFO L204 MainTranslator]: Completed translation [2024-10-14 01:34:36,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36 WrapperNode [2024-10-14 01:34:36,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 01:34:36,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 01:34:36,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 01:34:36,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 01:34:36,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,639 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5468 [2024-10-14 01:34:36,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 01:34:36,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 01:34:36,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 01:34:36,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 01:34:36,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,753 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 4097, 65, 25, 257, 5, 14, 70, 3]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 4096, 64, 0, 256, 4, 8, 64, 0]. The 14 writes are split as follows [0, 0, 0, 0, 0, 0, 8, 0, 0, 3, 2, 1]. [2024-10-14 01:34:36,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:36,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:37,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:37,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:37,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 01:34:37,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 01:34:37,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 01:34:37,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 01:34:37,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (1/1) ... [2024-10-14 01:34:37,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:34:37,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:34:37,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 01:34:37,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 01:34:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 01:34:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 01:34:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 01:34:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 01:34:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 01:34:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-14 01:34:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-14 01:34:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-14 01:34:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-14 01:34:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-14 01:34:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-14 01:34:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-14 01:34:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-14 01:34:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-14 01:34:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-14 01:34:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 01:34:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 01:34:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-14 01:34:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-14 01:34:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-14 01:34:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 01:34:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 01:34:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 01:34:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 01:34:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 01:34:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 01:34:37,382 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 01:34:37,384 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 01:34:43,257 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-10-14 01:34:43,258 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 01:34:43,496 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 01:34:43,496 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-14 01:34:43,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:34:43 BoogieIcfgContainer [2024-10-14 01:34:43,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 01:34:43,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 01:34:43,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 01:34:43,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 01:34:43,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:34:35" (1/3) ... [2024-10-14 01:34:43,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae67145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:34:43, skipping insertion in model container [2024-10-14 01:34:43,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:36" (2/3) ... [2024-10-14 01:34:43,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae67145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:34:43, skipping insertion in model container [2024-10-14 01:34:43,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:34:43" (3/3) ... [2024-10-14 01:34:43,504 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_94_safe.c-amalgamation.i [2024-10-14 01:34:43,520 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 01:34:43,520 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 01:34:43,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 01:34:43,582 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;@72ba733c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 01:34:43,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 01:34:43,586 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) [2024-10-14 01:34:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 01:34:43,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:43,594 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] [2024-10-14 01:34:43,594 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:43,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2024-10-14 01:34:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:43,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517290425] [2024-10-14 01:34:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:43,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:34:44,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:34:44,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517290425] [2024-10-14 01:34:44,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517290425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:34:44,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:34:44,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:34:44,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438230648] [2024-10-14 01:34:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:34:44,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 01:34:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:34:44,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 01:34:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:34:44,629 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) [2024-10-14 01:34:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:34:44,933 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2024-10-14 01:34:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 01:34:44,938 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 [2024-10-14 01:34:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:34:44,945 INFO L225 Difference]: With dead ends: 113 [2024-10-14 01:34:44,946 INFO L226 Difference]: Without dead ends: 56 [2024-10-14 01:34:44,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:34:44,951 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2024-10-14 01:34:44,952 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] [2024-10-14 01:34:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-14 01:34:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-14 01:34:44,985 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) [2024-10-14 01:34:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-10-14 01:34:44,990 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2024-10-14 01:34:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:34:44,991 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-10-14 01:34:44,991 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) [2024-10-14 01:34:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-10-14 01:34:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 01:34:44,992 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:44,992 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] [2024-10-14 01:34:44,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 01:34:44,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:44,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2024-10-14 01:34:44,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:44,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301283556] [2024-10-14 01:34:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:44,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:34:46,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:34:46,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301283556] [2024-10-14 01:34:46,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301283556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:34:46,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:34:46,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:34:46,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862597648] [2024-10-14 01:34:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:34:46,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:34:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:34:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:34:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:34:46,199 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) [2024-10-14 01:34:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:34:46,616 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-10-14 01:34:46,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:34:46,617 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 [2024-10-14 01:34:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:34:46,618 INFO L225 Difference]: With dead ends: 104 [2024-10-14 01:34:46,618 INFO L226 Difference]: Without dead ends: 56 [2024-10-14 01:34:46,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:34:46,620 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:34:46,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:34:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-14 01:34:46,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-14 01:34:46,624 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) [2024-10-14 01:34:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-14 01:34:46,624 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2024-10-14 01:34:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:34:46,625 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-14 01:34:46,625 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) [2024-10-14 01:34:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-14 01:34:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 01:34:46,626 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:46,626 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] [2024-10-14 01:34:46,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 01:34:46,626 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:46,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:46,627 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2024-10-14 01:34:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016615994] [2024-10-14 01:34:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:34:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:34:47,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016615994] [2024-10-14 01:34:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016615994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:34:47,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:34:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:34:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611455451] [2024-10-14 01:34:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:34:47,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:34:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:34:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:34:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:34:47,564 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) [2024-10-14 01:34:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:34:47,838 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-10-14 01:34:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:34:47,841 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 [2024-10-14 01:34:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:34:47,842 INFO L225 Difference]: With dead ends: 87 [2024-10-14 01:34:47,842 INFO L226 Difference]: Without dead ends: 57 [2024-10-14 01:34:47,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:34:47,843 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-10-14 01:34:47,843 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] [2024-10-14 01:34:47,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-14 01:34:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-14 01:34:47,848 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) [2024-10-14 01:34:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-14 01:34:47,849 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2024-10-14 01:34:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:34:47,849 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-14 01:34:47,849 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) [2024-10-14 01:34:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-14 01:34:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 01:34:47,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:47,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:34:47,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 01:34:47,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:47,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2024-10-14 01:34:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144940703] [2024-10-14 01:34:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:34:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:34:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144940703] [2024-10-14 01:34:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144940703] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434912799] [2024-10-14 01:34:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:48,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:34:48,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:34:48,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 01:34:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:49,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 5933 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:34:49,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:34:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:34:50,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:34:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:34:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434912799] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:50,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:34:50,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:34:50,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574644308] [2024-10-14 01:34:50,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:34:50,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:34:50,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:34:50,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:34:50,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:34:50,023 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) [2024-10-14 01:34:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:34:50,365 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2024-10-14 01:34:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:34:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-14 01:34:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:34:50,366 INFO L225 Difference]: With dead ends: 78 [2024-10-14 01:34:50,366 INFO L226 Difference]: Without dead ends: 58 [2024-10-14 01:34:50,367 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 [2024-10-14 01:34:50,368 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 [2024-10-14 01:34:50,369 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] [2024-10-14 01:34:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-14 01:34:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-14 01:34:50,372 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) [2024-10-14 01:34:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-10-14 01:34:50,374 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2024-10-14 01:34:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:34:50,374 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-10-14 01:34:50,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:34:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-10-14 01:34:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 01:34:50,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:50,377 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:34:50,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 01:34:50,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:50,578 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:50,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2024-10-14 01:34:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:50,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124642414] [2024-10-14 01:34:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:50,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:34:51,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:34:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124642414] [2024-10-14 01:34:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124642414] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939800980] [2024-10-14 01:34:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:51,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:34:51,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:34:51,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 01:34:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:52,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 5951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:34:52,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:34:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:34:52,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:34:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:34:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939800980] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:34:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:34:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430163986] [2024-10-14 01:34:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:34:52,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:34:52,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:34:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:34:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:34:52,790 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) [2024-10-14 01:34:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:34:53,162 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-10-14 01:34:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:34:53,162 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 [2024-10-14 01:34:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:34:53,163 INFO L225 Difference]: With dead ends: 69 [2024-10-14 01:34:53,163 INFO L226 Difference]: Without dead ends: 59 [2024-10-14 01:34:53,164 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 [2024-10-14 01:34:53,164 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:34:53,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:34:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-14 01:34:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-14 01:34:53,173 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) [2024-10-14 01:34:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-10-14 01:34:53,177 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2024-10-14 01:34:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:34:53,177 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-10-14 01:34:53,178 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) [2024-10-14 01:34:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-10-14 01:34:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-14 01:34:53,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:53,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:34:53,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 01:34:53,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:53,379 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:53,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2024-10-14 01:34:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:53,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404677011] [2024-10-14 01:34:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:34:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:34:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404677011] [2024-10-14 01:34:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404677011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713708349] [2024-10-14 01:34:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:54,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:34:54,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:34:54,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 01:34:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:56,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 5969 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:34:56,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:34:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:34:56,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:34:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:34:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713708349] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:34:56,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:34:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071483789] [2024-10-14 01:34:56,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:34:56,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:34:56,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:34:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:34:56,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:34:56,069 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) [2024-10-14 01:34:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:34:56,410 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-14 01:34:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:34:56,411 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 [2024-10-14 01:34:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:34:56,412 INFO L225 Difference]: With dead ends: 86 [2024-10-14 01:34:56,412 INFO L226 Difference]: Without dead ends: 60 [2024-10-14 01:34:56,412 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 [2024-10-14 01:34:56,413 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:34:56,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:34:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-14 01:34:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-14 01:34:56,417 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) [2024-10-14 01:34:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2024-10-14 01:34:56,417 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2024-10-14 01:34:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:34:56,418 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2024-10-14 01:34:56,418 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) [2024-10-14 01:34:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2024-10-14 01:34:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 01:34:56,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:56,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:34:56,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 01:34:56,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:56,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:56,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2024-10-14 01:34:56,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:56,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155816868] [2024-10-14 01:34:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:56,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:34:57,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:34:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155816868] [2024-10-14 01:34:57,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155816868] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517093302] [2024-10-14 01:34:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:57,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:34:57,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:34:57,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 01:34:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:34:58,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 5975 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:34:58,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:34:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:34:58,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:34:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:34:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517093302] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:34:58,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:34:58,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:34:58,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354302993] [2024-10-14 01:34:58,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:34:58,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:34:58,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:34:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:34:58,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:34:58,706 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) [2024-10-14 01:34:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:34:58,981 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2024-10-14 01:34:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:34:58,981 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 [2024-10-14 01:34:58,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:34:58,982 INFO L225 Difference]: With dead ends: 76 [2024-10-14 01:34:58,982 INFO L226 Difference]: Without dead ends: 61 [2024-10-14 01:34:58,982 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 [2024-10-14 01:34:58,983 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:34:58,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:34:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-14 01:34:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-14 01:34:58,987 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) [2024-10-14 01:34:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-10-14 01:34:58,988 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2024-10-14 01:34:58,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:34:58,988 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-10-14 01:34:58,988 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) [2024-10-14 01:34:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-10-14 01:34:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-14 01:34:58,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:34:58,989 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] [2024-10-14 01:34:59,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 01:34:59,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:34:59,195 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:34:59,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:34:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2024-10-14 01:34:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:34:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064854708] [2024-10-14 01:34:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:34:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:34:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:35:00,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:00,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064854708] [2024-10-14 01:35:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064854708] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:00,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700697147] [2024-10-14 01:35:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:00,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:00,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:00,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:00,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 01:35:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:01,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:35:01,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:35:01,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:35:01,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700697147] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:01,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:35:01,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:35:01,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442874477] [2024-10-14 01:35:01,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:35:01,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:35:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:35:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:35:01,307 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) [2024-10-14 01:35:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:01,631 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-14 01:35:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:35:01,632 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 [2024-10-14 01:35:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:01,632 INFO L225 Difference]: With dead ends: 66 [2024-10-14 01:35:01,632 INFO L226 Difference]: Without dead ends: 62 [2024-10-14 01:35:01,633 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 [2024-10-14 01:35:01,633 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:01,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:35:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-14 01:35:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-14 01:35:01,636 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) [2024-10-14 01:35:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-10-14 01:35:01,637 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2024-10-14 01:35:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:01,637 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-10-14 01:35:01,637 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) [2024-10-14 01:35:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-10-14 01:35:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 01:35:01,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:01,638 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] [2024-10-14 01:35:01,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 01:35:01,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:01,843 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:01,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2024-10-14 01:35:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:01,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407291286] [2024-10-14 01:35:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:01,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:35:02,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407291286] [2024-10-14 01:35:02,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407291286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558449008] [2024-10-14 01:35:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:02,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:02,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:02,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:02,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 01:35:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:03,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 01:35:03,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:35:03,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:35:04,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558449008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:04,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 4] total 10 [2024-10-14 01:35:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628399779] [2024-10-14 01:35:04,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:04,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 01:35:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 01:35:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:35:04,033 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 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) [2024-10-14 01:35:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:04,684 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2024-10-14 01:35:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 01:35:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 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) Word has length 55 [2024-10-14 01:35:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:04,685 INFO L225 Difference]: With dead ends: 107 [2024-10-14 01:35:04,685 INFO L226 Difference]: Without dead ends: 72 [2024-10-14 01:35:04,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:35:04,685 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 20 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:04,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 368 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 01:35:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-14 01:35:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-14 01:35:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2024-10-14 01:35:04,689 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 55 [2024-10-14 01:35:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:04,690 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2024-10-14 01:35:04,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 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) [2024-10-14 01:35:04,690 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2024-10-14 01:35:04,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-14 01:35:04,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:04,691 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] [2024-10-14 01:35:04,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 01:35:04,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:04,892 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:04,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1849547982, now seen corresponding path program 2 times [2024-10-14 01:35:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341364269] [2024-10-14 01:35:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 01:35:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341364269] [2024-10-14 01:35:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341364269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527145198] [2024-10-14 01:35:05,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:35:05,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:05,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:05,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:05,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 01:35:07,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:35:07,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:35:07,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 6052 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 01:35:07,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:35:07,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-14 01:35:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527145198] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:07,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:35:07,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 8] total 12 [2024-10-14 01:35:07,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800474206] [2024-10-14 01:35:07,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:35:07,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:35:07,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:35:07,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:35:07,131 INFO L87 Difference]: Start difference. First operand 72 states and 94 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) [2024-10-14 01:35:07,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:07,549 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2024-10-14 01:35:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:35:07,549 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 65 [2024-10-14 01:35:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:07,550 INFO L225 Difference]: With dead ends: 82 [2024-10-14 01:35:07,550 INFO L226 Difference]: Without dead ends: 73 [2024-10-14 01:35:07,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:35:07,551 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 [2024-10-14 01:35:07,551 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] [2024-10-14 01:35:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-14 01:35:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-14 01:35:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2024-10-14 01:35:07,558 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 65 [2024-10-14 01:35:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:07,559 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2024-10-14 01:35:07,559 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) [2024-10-14 01:35:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2024-10-14 01:35:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 01:35:07,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:07,561 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] [2024-10-14 01:35:07,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 01:35:07,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:07,765 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:07,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:07,765 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 1 times [2024-10-14 01:35:07,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:07,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640625672] [2024-10-14 01:35:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:07,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 01:35:08,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640625672] [2024-10-14 01:35:08,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640625672] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358754379] [2024-10-14 01:35:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:08,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:08,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:08,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:08,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 01:35:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:09,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 6066 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:35:09,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 01:35:09,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:35:09,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358754379] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:09,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:09,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-14 01:35:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005300578] [2024-10-14 01:35:09,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:09,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 01:35:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 01:35:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 01:35:09,840 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-10-14 01:35:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:10,279 INFO L93 Difference]: Finished difference Result 128 states and 171 transitions. [2024-10-14 01:35:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 01:35:10,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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 68 [2024-10-14 01:35:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:10,280 INFO L225 Difference]: With dead ends: 128 [2024-10-14 01:35:10,281 INFO L226 Difference]: Without dead ends: 83 [2024-10-14 01:35:10,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:35:10,282 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 15 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:10,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 219 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:35:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-14 01:35:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-14 01:35:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 82 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2024-10-14 01:35:10,287 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 68 [2024-10-14 01:35:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:10,287 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2024-10-14 01:35:10,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-10-14 01:35:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2024-10-14 01:35:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-14 01:35:10,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:10,288 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] [2024-10-14 01:35:10,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 01:35:10,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 01:35:10,491 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:10,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:10,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 2 times [2024-10-14 01:35:10,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:10,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589129884] [2024-10-14 01:35:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:10,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 01:35:11,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589129884] [2024-10-14 01:35:11,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589129884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:11,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284588550] [2024-10-14 01:35:11,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:35:11,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:11,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:11,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:11,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 01:35:12,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:35:12,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:35:12,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 6131 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 01:35:12,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-14 01:35:12,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-14 01:35:13,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284588550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:13,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:13,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-10-14 01:35:13,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146104215] [2024-10-14 01:35:13,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:13,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 01:35:13,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 01:35:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-10-14 01:35:13,047 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:13,902 INFO L93 Difference]: Finished difference Result 156 states and 211 transitions. [2024-10-14 01:35:13,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 01:35:13,902 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 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 78 [2024-10-14 01:35:13,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:13,903 INFO L225 Difference]: With dead ends: 156 [2024-10-14 01:35:13,903 INFO L226 Difference]: Without dead ends: 102 [2024-10-14 01:35:13,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-10-14 01:35:13,904 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 52 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:13,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 405 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 01:35:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-14 01:35:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-10-14 01:35:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.316831683168317) internal successors, (133), 101 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 133 transitions. [2024-10-14 01:35:13,913 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 133 transitions. Word has length 78 [2024-10-14 01:35:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:13,913 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 133 transitions. [2024-10-14 01:35:13,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 133 transitions. [2024-10-14 01:35:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-14 01:35:13,913 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:13,914 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:13,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 01:35:14,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:14,115 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:14,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1697832099, now seen corresponding path program 3 times [2024-10-14 01:35:14,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:14,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752056543] [2024-10-14 01:35:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:14,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-10-14 01:35:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752056543] [2024-10-14 01:35:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752056543] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417833170] [2024-10-14 01:35:15,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:35:15,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:15,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:15,048 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:15,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 01:35:16,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 01:35:16,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:35:16,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 5998 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 01:35:16,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-10-14 01:35:16,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-14 01:35:16,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417833170] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:16,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:35:16,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2024-10-14 01:35:16,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812211037] [2024-10-14 01:35:16,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:35:16,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:35:16,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:35:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:35:16,460 INFO L87 Difference]: Start difference. First operand 102 states and 133 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) [2024-10-14 01:35:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:16,794 INFO L93 Difference]: Finished difference Result 170 states and 223 transitions. [2024-10-14 01:35:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:35:16,794 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 97 [2024-10-14 01:35:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:16,795 INFO L225 Difference]: With dead ends: 170 [2024-10-14 01:35:16,795 INFO L226 Difference]: Without dead ends: 103 [2024-10-14 01:35:16,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:35:16,796 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:16,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:35:16,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-14 01:35:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-10-14 01:35:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3137254901960784) internal successors, (134), 102 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2024-10-14 01:35:16,801 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 97 [2024-10-14 01:35:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:16,801 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2024-10-14 01:35:16,801 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) [2024-10-14 01:35:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2024-10-14 01:35:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-14 01:35:16,802 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:16,802 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:16,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 01:35:17,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 01:35:17,007 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:17,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:17,007 INFO L85 PathProgramCache]: Analyzing trace with hash -612120683, now seen corresponding path program 1 times [2024-10-14 01:35:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:17,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299920320] [2024-10-14 01:35:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:35:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299920320] [2024-10-14 01:35:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299920320] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422314823] [2024-10-14 01:35:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:17,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:17,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:17,944 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:17,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 01:35:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:19,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 6264 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:35:19,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-14 01:35:19,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-14 01:35:19,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422314823] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:19,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:35:19,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-14 01:35:19,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187435684] [2024-10-14 01:35:19,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:35:19,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:35:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:19,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:35:19,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:35:19,363 INFO L87 Difference]: Start difference. First operand 103 states and 134 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) [2024-10-14 01:35:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:19,751 INFO L93 Difference]: Finished difference Result 135 states and 177 transitions. [2024-10-14 01:35:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:35:19,752 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 100 [2024-10-14 01:35:19,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:19,753 INFO L225 Difference]: With dead ends: 135 [2024-10-14 01:35:19,753 INFO L226 Difference]: Without dead ends: 104 [2024-10-14 01:35:19,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:35:19,754 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 [2024-10-14 01:35:19,755 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] [2024-10-14 01:35:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-14 01:35:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-10-14 01:35:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 103 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2024-10-14 01:35:19,759 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 100 [2024-10-14 01:35:19,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:19,760 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2024-10-14 01:35:19,760 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) [2024-10-14 01:35:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2024-10-14 01:35:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-14 01:35:19,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:19,761 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:19,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 01:35:19,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 01:35:19,962 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash -781204617, now seen corresponding path program 1 times [2024-10-14 01:35:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804111736] [2024-10-14 01:35:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-10-14 01:35:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804111736] [2024-10-14 01:35:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804111736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669716683] [2024-10-14 01:35:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:20,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:20,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:20,898 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:20,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 01:35:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:22,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 6278 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:35:22,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-14 01:35:22,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-14 01:35:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669716683] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:22,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:35:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-14 01:35:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526461193] [2024-10-14 01:35:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:35:22,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:35:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:35:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:35:22,194 INFO L87 Difference]: Start difference. First operand 104 states and 135 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) [2024-10-14 01:35:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:22,523 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions. [2024-10-14 01:35:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:35:22,523 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 103 [2024-10-14 01:35:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:22,524 INFO L225 Difference]: With dead ends: 137 [2024-10-14 01:35:22,524 INFO L226 Difference]: Without dead ends: 105 [2024-10-14 01:35:22,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:35:22,525 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 [2024-10-14 01:35:22,525 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] [2024-10-14 01:35:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-14 01:35:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-10-14 01:35:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 104 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2024-10-14 01:35:22,529 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 103 [2024-10-14 01:35:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:22,529 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2024-10-14 01:35:22,529 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) [2024-10-14 01:35:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2024-10-14 01:35:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-14 01:35:22,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:22,530 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:22,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 01:35:22,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 01:35:22,731 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:22,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1300240577, now seen corresponding path program 1 times [2024-10-14 01:35:22,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:22,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867703242] [2024-10-14 01:35:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:22,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-10-14 01:35:23,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867703242] [2024-10-14 01:35:23,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867703242] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79929400] [2024-10-14 01:35:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:23,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:23,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:23,770 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:23,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 01:35:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:24,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 6281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:35:24,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-14 01:35:25,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-10-14 01:35:25,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79929400] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:35:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-14 01:35:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740174610] [2024-10-14 01:35:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:35:25,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:35:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:35:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:35:25,081 INFO L87 Difference]: Start difference. First operand 105 states and 136 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) [2024-10-14 01:35:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:25,366 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2024-10-14 01:35:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:35:25,366 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 104 [2024-10-14 01:35:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:25,370 INFO L225 Difference]: With dead ends: 116 [2024-10-14 01:35:25,370 INFO L226 Difference]: Without dead ends: 106 [2024-10-14 01:35:25,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:35:25,371 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:25,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:35:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-14 01:35:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-10-14 01:35:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3047619047619048) internal successors, (137), 105 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2024-10-14 01:35:25,377 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 104 [2024-10-14 01:35:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:25,378 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2024-10-14 01:35:25,378 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) [2024-10-14 01:35:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2024-10-14 01:35:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 01:35:25,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:25,379 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:25,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 01:35:25,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 01:35:25,583 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:25,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash -3337210, now seen corresponding path program 1 times [2024-10-14 01:35:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158925525] [2024-10-14 01:35:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-14 01:35:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158925525] [2024-10-14 01:35:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158925525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562600324] [2024-10-14 01:35:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:26,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:26,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:26,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:26,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 01:35:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:27,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 6284 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 01:35:27,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-14 01:35:28,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-10-14 01:35:28,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562600324] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:28,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:28,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2024-10-14 01:35:28,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361099831] [2024-10-14 01:35:28,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:28,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 01:35:28,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:28,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 01:35:28,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:35:28,239 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:29,973 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2024-10-14 01:35:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 01:35:29,974 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 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 105 [2024-10-14 01:35:29,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:29,975 INFO L225 Difference]: With dead ends: 201 [2024-10-14 01:35:29,975 INFO L226 Difference]: Without dead ends: 125 [2024-10-14 01:35:29,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-10-14 01:35:29,976 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:29,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 950 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-14 01:35:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-14 01:35:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-10-14 01:35:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 124 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2024-10-14 01:35:29,987 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 105 [2024-10-14 01:35:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:29,987 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2024-10-14 01:35:29,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2024-10-14 01:35:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 01:35:29,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:29,989 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:30,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 01:35:30,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:30,193 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:30,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:30,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1294476597, now seen corresponding path program 2 times [2024-10-14 01:35:30,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:30,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146623853] [2024-10-14 01:35:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:30,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2024-10-14 01:35:31,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:31,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146623853] [2024-10-14 01:35:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146623853] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:31,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874934804] [2024-10-14 01:35:31,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:35:31,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:31,355 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:31,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 01:35:32,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:35:32,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:35:32,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 6403 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-14 01:35:32,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-10-14 01:35:32,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-10-14 01:35:32,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874934804] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:35:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 12 [2024-10-14 01:35:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184145712] [2024-10-14 01:35:32,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:35:32,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:35:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:35:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:35:32,944 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:33,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:33,219 INFO L93 Difference]: Finished difference Result 217 states and 284 transitions. [2024-10-14 01:35:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:35:33,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 124 [2024-10-14 01:35:33,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:33,221 INFO L225 Difference]: With dead ends: 217 [2024-10-14 01:35:33,221 INFO L226 Difference]: Without dead ends: 126 [2024-10-14 01:35:33,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:35:33,221 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:33,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:35:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-14 01:35:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-10-14 01:35:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.304) internal successors, (163), 125 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2024-10-14 01:35:33,226 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 124 [2024-10-14 01:35:33,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:33,226 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2024-10-14 01:35:33,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2024-10-14 01:35:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-14 01:35:33,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:33,227 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:33,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-14 01:35:33,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 01:35:33,429 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:33,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1307699451, now seen corresponding path program 1 times [2024-10-14 01:35:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826571010] [2024-10-14 01:35:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-10-14 01:35:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826571010] [2024-10-14 01:35:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826571010] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22009274] [2024-10-14 01:35:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:34,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:34,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:34,640 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:34,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 01:35:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:36,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 6406 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-14 01:35:36,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-10-14 01:35:36,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-14 01:35:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22009274] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:36,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:36,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 5] total 16 [2024-10-14 01:35:36,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679312953] [2024-10-14 01:35:36,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:36,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 01:35:36,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 01:35:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-10-14 01:35:36,536 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand has 16 states, 16 states have (on average 7.75) internal successors, (124), 16 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) [2024-10-14 01:35:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:37,873 INFO L93 Difference]: Finished difference Result 237 states and 311 transitions. [2024-10-14 01:35:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 01:35:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 16 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) Word has length 125 [2024-10-14 01:35:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:37,875 INFO L225 Difference]: With dead ends: 237 [2024-10-14 01:35:37,875 INFO L226 Difference]: Without dead ends: 142 [2024-10-14 01:35:37,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-10-14 01:35:37,875 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 25 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:37,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 560 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 01:35:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-14 01:35:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2024-10-14 01:35:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.2971014492753623) internal successors, (179), 138 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 179 transitions. [2024-10-14 01:35:37,881 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 179 transitions. Word has length 125 [2024-10-14 01:35:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:37,881 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 179 transitions. [2024-10-14 01:35:37,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 16 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) [2024-10-14 01:35:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 179 transitions. [2024-10-14 01:35:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-14 01:35:37,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:37,882 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:37,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-14 01:35:38,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:38,086 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:38,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash -352378771, now seen corresponding path program 2 times [2024-10-14 01:35:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274379334] [2024-10-14 01:35:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2024-10-14 01:35:39,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:39,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274379334] [2024-10-14 01:35:39,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274379334] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:39,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533372730] [2024-10-14 01:35:39,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:35:39,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:39,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:39,331 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:39,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 01:35:41,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:35:41,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:35:41,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 6468 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-14 01:35:41,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-14 01:35:41,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-14 01:35:41,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533372730] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:41,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:41,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2024-10-14 01:35:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737936602] [2024-10-14 01:35:41,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:41,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 01:35:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 01:35:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2024-10-14 01:35:41,522 INFO L87 Difference]: Start difference. First operand 139 states and 179 transitions. Second operand has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:45,565 INFO L93 Difference]: Finished difference Result 283 states and 380 transitions. [2024-10-14 01:35:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-14 01:35:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 0 states have call successors, (0), 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 138 [2024-10-14 01:35:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:45,566 INFO L225 Difference]: With dead ends: 283 [2024-10-14 01:35:45,566 INFO L226 Difference]: Without dead ends: 176 [2024-10-14 01:35:45,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 01:35:45,567 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 153 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:45,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1073 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-14 01:35:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-14 01:35:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-10-14 01:35:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.302857142857143) internal successors, (228), 175 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2024-10-14 01:35:45,582 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 138 [2024-10-14 01:35:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:45,582 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2024-10-14 01:35:45,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2024-10-14 01:35:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-14 01:35:45,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:45,583 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 10, 10, 10, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:45,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 01:35:45,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:45,784 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:45,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1786039656, now seen corresponding path program 3 times [2024-10-14 01:35:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302934346] [2024-10-14 01:35:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2024-10-14 01:35:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302934346] [2024-10-14 01:35:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302934346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499506204] [2024-10-14 01:35:47,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:35:47,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:47,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:47,186 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:47,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 01:35:48,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 01:35:48,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:35:48,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 6098 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 01:35:48,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-14 01:35:48,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2024-10-14 01:35:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499506204] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:49,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:49,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 16 [2024-10-14 01:35:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169881790] [2024-10-14 01:35:49,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:49,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 01:35:49,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 01:35:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-10-14 01:35:49,006 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:35:49,858 INFO L93 Difference]: Finished difference Result 332 states and 435 transitions. [2024-10-14 01:35:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 01:35:49,858 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 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 175 [2024-10-14 01:35:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:35:49,859 INFO L225 Difference]: With dead ends: 332 [2024-10-14 01:35:49,859 INFO L226 Difference]: Without dead ends: 189 [2024-10-14 01:35:49,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-10-14 01:35:49,860 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 25 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 01:35:49,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 577 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 01:35:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-14 01:35:49,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-10-14 01:35:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.297872340425532) internal successors, (244), 188 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2024-10-14 01:35:49,867 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 244 transitions. Word has length 175 [2024-10-14 01:35:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:35:49,867 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 244 transitions. [2024-10-14 01:35:49,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:35:49,868 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 244 transitions. [2024-10-14 01:35:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-14 01:35:49,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:35:49,868 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 10, 10, 10, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:35:49,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-14 01:35:50,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:50,073 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:35:50,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:35:50,073 INFO L85 PathProgramCache]: Analyzing trace with hash 291021445, now seen corresponding path program 4 times [2024-10-14 01:35:50,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:35:50,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124216600] [2024-10-14 01:35:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:35:50,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:35:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:35:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-10-14 01:35:52,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:35:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124216600] [2024-10-14 01:35:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124216600] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:35:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366641181] [2024-10-14 01:35:52,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 01:35:52,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:35:52,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:35:52,458 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:35:52,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-14 01:35:54,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 01:35:54,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:35:54,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 6757 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-14 01:35:54,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:35:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 662 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-10-14 01:35:54,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:35:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-10-14 01:35:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366641181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:35:54,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:35:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 13] total 47 [2024-10-14 01:35:54,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223598592] [2024-10-14 01:35:54,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:35:54,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-14 01:35:54,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:35:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-14 01:35:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1928, Unknown=0, NotChecked=0, Total=2162 [2024-10-14 01:35:54,986 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. Second operand has 47 states, 47 states have (on average 4.446808510638298) internal successors, (209), 47 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) [2024-10-14 01:36:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:36:01,244 INFO L93 Difference]: Finished difference Result 296 states and 397 transitions. [2024-10-14 01:36:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-14 01:36:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.446808510638298) internal successors, (209), 47 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) Word has length 188 [2024-10-14 01:36:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:36:01,249 INFO L225 Difference]: With dead ends: 296 [2024-10-14 01:36:01,249 INFO L226 Difference]: Without dead ends: 230 [2024-10-14 01:36:01,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=474, Invalid=2718, Unknown=0, NotChecked=0, Total=3192 [2024-10-14 01:36:01,251 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 197 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:36:01,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 2557 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-14 01:36:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-10-14 01:36:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2024-10-14 01:36:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.303964757709251) internal successors, (296), 227 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:36:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 296 transitions. [2024-10-14 01:36:01,263 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 296 transitions. Word has length 188 [2024-10-14 01:36:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:36:01,264 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 296 transitions. [2024-10-14 01:36:01,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.446808510638298) internal successors, (209), 47 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) [2024-10-14 01:36:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 296 transitions. [2024-10-14 01:36:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-10-14 01:36:01,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:36:01,264 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:36:01,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-14 01:36:01,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:36:01,465 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:36:01,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:36:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1206924036, now seen corresponding path program 5 times [2024-10-14 01:36:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:36:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498087696] [2024-10-14 01:36:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:36:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:36:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:36:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1626 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-10-14 01:36:04,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:36:04,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498087696] [2024-10-14 01:36:04,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498087696] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:36:04,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24471846] [2024-10-14 01:36:04,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 01:36:04,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:36:04,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:36:04,518 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:36:04,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process