./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_89_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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_89_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 4f41e3028bb7a1d35c0434870f34b243c5420376125474f09b7f824db251e2d4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:05:46,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:05:46,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:05:46,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:05:46,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:05:46,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:05:46,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:05:46,862 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:05:46,863 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:05:46,864 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:05:46,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:05:46,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:05:46,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:05:46,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:05:46,870 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:05:46,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:05:46,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:05:46,871 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:05:46,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:05:46,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:05:46,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:05:46,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:05:46,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:05:46,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:05:46,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:05:46,874 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:05:46,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:05:46,874 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:05:46,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:05:46,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:05:46,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:05:46,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:05:46,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:05:46,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:05:46,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:05:46,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:05:46,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:05:46,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:05:46,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:05:46,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:05:46,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:05:46,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:05:46,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f41e3028bb7a1d35c0434870f34b243c5420376125474f09b7f824db251e2d4 [2024-10-12 18:05:47,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:05:47,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:05:47,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:05:47,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:05:47,213 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:05:47,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_89_safe.c-amalgamation.i [2024-10-12 18:05:48,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:05:49,121 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:05:49,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_89_safe.c-amalgamation.i [2024-10-12 18:05:49,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247481ec2/6bba4579010745d7a3b64a593a28a8a3/FLAGa6755ebf9 [2024-10-12 18:05:49,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247481ec2/6bba4579010745d7a3b64a593a28a8a3 [2024-10-12 18:05:49,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:05:49,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:05:49,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:05:49,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:05:49,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:05:49,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:05:49" (1/1) ... [2024-10-12 18:05:49,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32adfbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:49, skipping insertion in model container [2024-10-12 18:05:49,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:05:49" (1/1) ... [2024-10-12 18:05:49,265 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:05:49,948 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_89_safe.c-amalgamation.i[64322,64335] [2024-10-12 18:05:50,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:05:50,377 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:05:50,443 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_89_safe.c-amalgamation.i[64322,64335] [2024-10-12 18:05:50,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:05:50,849 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:05:50,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50 WrapperNode [2024-10-12 18:05:50,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:05:50,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:05:50,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:05:50,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:05:50,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:50,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,245 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5468 [2024-10-12 18:05:51,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:05:51,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:05:51,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:05:51,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:05:51,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,422 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 4097, 65, 257, 5, 14, 70, 25, 3]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 4096, 64, 256, 4, 8, 64, 0, 0]. The 14 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 8, 1]. [2024-10-12 18:05:51,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:05:51,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:05:51,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:05:51,650 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:05:51,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (1/1) ... [2024-10-12 18:05:51,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:05:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:05:51,689 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) [2024-10-12 18:05:51,692 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 [2024-10-12 18:05:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-12 18:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-12 18:05:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-12 18:05:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:05:51,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 18:05:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 18:05:51,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 18:05:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 18:05:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 18:05:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 18:05:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 18:05:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 18:05:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 18:05:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 18:05:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 18:05:51,969 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:05:51,972 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:05:59,066 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-10-12 18:05:59,066 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:05:59,360 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:05:59,361 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-12 18:05:59,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:05:59 BoogieIcfgContainer [2024-10-12 18:05:59,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:05:59,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:05:59,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:05:59,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:05:59,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:05:49" (1/3) ... [2024-10-12 18:05:59,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebc1b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:05:59, skipping insertion in model container [2024-10-12 18:05:59,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:05:50" (2/3) ... [2024-10-12 18:05:59,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebc1b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:05:59, skipping insertion in model container [2024-10-12 18:05:59,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:05:59" (3/3) ... [2024-10-12 18:05:59,372 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_89_safe.c-amalgamation.i [2024-10-12 18:05:59,391 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:05:59,391 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:05:59,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:05:59,475 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;@5843512f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:05:59,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:05:59,481 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) [2024-10-12 18:05:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:05:59,488 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:05:59,489 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] [2024-10-12 18:05:59,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:05:59,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:05:59,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2024-10-12 18:05:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:05:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721375668] [2024-10-12 18:05:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:05:59,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:06:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:00,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721375668] [2024-10-12 18:06:00,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721375668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:06:00,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:06:00,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:06:00,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761813271] [2024-10-12 18:06:00,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:00,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:06:00,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:06:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:06:00,899 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) [2024-10-12 18:06:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:01,251 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2024-10-12 18:06:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:06:01,255 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 [2024-10-12 18:06:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:01,262 INFO L225 Difference]: With dead ends: 113 [2024-10-12 18:06:01,262 INFO L226 Difference]: Without dead ends: 56 [2024-10-12 18:06:01,265 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 [2024-10-12 18:06:01,268 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 [2024-10-12 18:06:01,269 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] [2024-10-12 18:06:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-12 18:06:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-12 18:06:01,298 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) [2024-10-12 18:06:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-10-12 18:06:01,300 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2024-10-12 18:06:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:01,301 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-10-12 18:06:01,301 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) [2024-10-12 18:06:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-10-12 18:06:01,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:06:01,302 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:01,302 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] [2024-10-12 18:06:01,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:06:01,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:01,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2024-10-12 18:06:01,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:01,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283449999] [2024-10-12 18:06:01,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:01,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:06:02,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:02,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283449999] [2024-10-12 18:06:02,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283449999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:06:02,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:06:02,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:06:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334425482] [2024-10-12 18:06:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:02,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:06:02,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:06:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:06:02,270 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) [2024-10-12 18:06:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:02,907 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-10-12 18:06:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:06:02,909 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 [2024-10-12 18:06:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:02,910 INFO L225 Difference]: With dead ends: 104 [2024-10-12 18:06:02,911 INFO L226 Difference]: Without dead ends: 56 [2024-10-12 18:06:02,911 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 [2024-10-12 18:06:02,913 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:02,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:06:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-12 18:06:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-12 18:06:02,921 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) [2024-10-12 18:06:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-12 18:06:02,922 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2024-10-12 18:06:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:02,923 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-12 18:06:02,923 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) [2024-10-12 18:06:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-12 18:06:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:06:02,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:02,924 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] [2024-10-12 18:06:02,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:06:02,925 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:02,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2024-10-12 18:06:02,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313519107] [2024-10-12 18:06:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:02,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:06:04,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:04,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313519107] [2024-10-12 18:06:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313519107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:06:04,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:06:04,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:06:04,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520112229] [2024-10-12 18:06:04,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:04,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:06:04,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:04,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:06:04,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:06:04,167 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) [2024-10-12 18:06:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:04,607 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-10-12 18:06:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:06:04,608 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 [2024-10-12 18:06:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:04,609 INFO L225 Difference]: With dead ends: 87 [2024-10-12 18:06:04,609 INFO L226 Difference]: Without dead ends: 57 [2024-10-12 18:06:04,609 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 [2024-10-12 18:06:04,610 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:04,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:06:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-12 18:06:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-12 18:06:04,634 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) [2024-10-12 18:06:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-12 18:06:04,636 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2024-10-12 18:06:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:04,636 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-12 18:06:04,636 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) [2024-10-12 18:06:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-12 18:06:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-12 18:06:04,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:04,637 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] [2024-10-12 18:06:04,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:06:04,638 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:04,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:04,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2024-10-12 18:06:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:04,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082599260] [2024-10-12 18:06:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:06:06,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:06,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082599260] [2024-10-12 18:06:06,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082599260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:06,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540318180] [2024-10-12 18:06:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:06,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:06,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:06,100 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) [2024-10-12 18:06:06,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:06:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:07,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 5933 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 18:06:07,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:06:07,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:06:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540318180] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:07,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:07,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:06:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474891807] [2024-10-12 18:06:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:07,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:06:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:06:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:06:07,855 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) [2024-10-12 18:06:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:08,262 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2024-10-12 18:06:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:06:08,263 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 [2024-10-12 18:06:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:08,264 INFO L225 Difference]: With dead ends: 78 [2024-10-12 18:06:08,264 INFO L226 Difference]: Without dead ends: 58 [2024-10-12 18:06:08,264 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 [2024-10-12 18:06:08,265 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2024-10-12 18:06:08,267 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] [2024-10-12 18:06:08,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-12 18:06:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-12 18:06:08,275 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) [2024-10-12 18:06:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-10-12 18:06:08,276 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2024-10-12 18:06:08,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:08,276 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-10-12 18:06:08,277 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) [2024-10-12 18:06:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-10-12 18:06:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-12 18:06:08,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:08,279 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] [2024-10-12 18:06:08,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:06:08,480 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 [2024-10-12 18:06:08,481 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:08,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2024-10-12 18:06:08,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:08,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58767084] [2024-10-12 18:06:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:08,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:06:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58767084] [2024-10-12 18:06:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58767084] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:09,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675495791] [2024-10-12 18:06:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:09,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:09,682 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) [2024-10-12 18:06:09,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:06:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:11,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 5951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 18:06:11,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:06:11,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:06:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675495791] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:11,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:11,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:06:11,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161262282] [2024-10-12 18:06:11,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:11,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:06:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:06:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:06:11,180 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) [2024-10-12 18:06:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:11,519 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-10-12 18:06:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:06:11,520 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 [2024-10-12 18:06:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:11,521 INFO L225 Difference]: With dead ends: 69 [2024-10-12 18:06:11,521 INFO L226 Difference]: Without dead ends: 59 [2024-10-12 18:06:11,521 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 [2024-10-12 18:06:11,522 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 [2024-10-12 18:06:11,523 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] [2024-10-12 18:06:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-12 18:06:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-12 18:06:11,527 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) [2024-10-12 18:06:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-10-12 18:06:11,528 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2024-10-12 18:06:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:11,528 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-10-12 18:06:11,529 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) [2024-10-12 18:06:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-10-12 18:06:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:06:11,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:11,530 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] [2024-10-12 18:06:11,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:06:11,730 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 [2024-10-12 18:06:11,731 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:11,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2024-10-12 18:06:11,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:11,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240416475] [2024-10-12 18:06:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:11,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:06:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240416475] [2024-10-12 18:06:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240416475] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:12,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956181414] [2024-10-12 18:06:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:12,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:12,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:12,972 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) [2024-10-12 18:06:12,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:06:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:14,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 5969 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:06:14,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:06:14,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:06:14,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956181414] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:14,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:14,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:06:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807900315] [2024-10-12 18:06:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:14,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:06:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:06:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:06:14,456 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) [2024-10-12 18:06:14,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:14,771 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-12 18:06:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:06:14,772 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 [2024-10-12 18:06:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:14,772 INFO L225 Difference]: With dead ends: 86 [2024-10-12 18:06:14,772 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 18:06:14,773 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 [2024-10-12 18:06:14,773 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 [2024-10-12 18:06:14,774 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] [2024-10-12 18:06:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 18:06:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-12 18:06:14,778 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) [2024-10-12 18:06:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2024-10-12 18:06:14,779 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2024-10-12 18:06:14,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:14,779 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2024-10-12 18:06:14,779 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) [2024-10-12 18:06:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2024-10-12 18:06:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-12 18:06:14,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:14,780 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] [2024-10-12 18:06:14,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:06:14,981 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 [2024-10-12 18:06:14,981 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:14,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2024-10-12 18:06:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310489166] [2024-10-12 18:06:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:06:16,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:16,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310489166] [2024-10-12 18:06:16,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310489166] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:16,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139621988] [2024-10-12 18:06:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:16,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:16,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:16,157 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) [2024-10-12 18:06:16,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:06:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:17,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 5975 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:06:17,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:06:17,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:06:17,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139621988] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:17,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:17,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:06:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661660571] [2024-10-12 18:06:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:17,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:06:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:06:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:06:17,572 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) [2024-10-12 18:06:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:17,945 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2024-10-12 18:06:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:06:17,945 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 [2024-10-12 18:06:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:17,946 INFO L225 Difference]: With dead ends: 76 [2024-10-12 18:06:17,946 INFO L226 Difference]: Without dead ends: 61 [2024-10-12 18:06:17,947 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 [2024-10-12 18:06:17,949 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:17,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:06:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-12 18:06:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-12 18:06:17,954 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) [2024-10-12 18:06:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-10-12 18:06:17,955 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2024-10-12 18:06:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:17,955 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-10-12 18:06:17,955 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) [2024-10-12 18:06:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-10-12 18:06:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 18:06:17,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:17,956 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] [2024-10-12 18:06:17,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:06:18,156 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 [2024-10-12 18:06:18,157 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:18,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2024-10-12 18:06:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431115723] [2024-10-12 18:06:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:18,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:06:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431115723] [2024-10-12 18:06:19,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431115723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638872582] [2024-10-12 18:06:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:19,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:19,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:19,024 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) [2024-10-12 18:06:19,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:06:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:20,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:06:20,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:06:20,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:06:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638872582] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:20,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:20,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:06:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325714740] [2024-10-12 18:06:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:20,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:06:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:06:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:06:20,244 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) [2024-10-12 18:06:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:20,615 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-12 18:06:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:06:20,616 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 [2024-10-12 18:06:20,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:20,617 INFO L225 Difference]: With dead ends: 66 [2024-10-12 18:06:20,617 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 18:06:20,617 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 [2024-10-12 18:06:20,618 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:20,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:06:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 18:06:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 18:06:20,622 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) [2024-10-12 18:06:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-10-12 18:06:20,623 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2024-10-12 18:06:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:20,623 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-10-12 18:06:20,623 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) [2024-10-12 18:06:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-10-12 18:06:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 18:06:20,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:20,625 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] [2024-10-12 18:06:20,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 18:06:20,825 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 [2024-10-12 18:06:20,826 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:20,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:20,827 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2024-10-12 18:06:20,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:20,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759123897] [2024-10-12 18:06:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:06:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:21,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759123897] [2024-10-12 18:06:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759123897] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:21,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761324836] [2024-10-12 18:06:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:21,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:21,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:21,784 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) [2024-10-12 18:06:21,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:06:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:23,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:06:23,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:06:23,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:06:23,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761324836] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:06:23,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:06:23,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-12 18:06:23,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522192306] [2024-10-12 18:06:23,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:06:23,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 18:06:23,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:23,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 18:06:23,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:06:23,140 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:23,707 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2024-10-12 18:06:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 18:06:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-12 18:06:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:23,709 INFO L225 Difference]: With dead ends: 107 [2024-10-12 18:06:23,709 INFO L226 Difference]: Without dead ends: 72 [2024-10-12 18:06:23,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:06:23,710 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:23,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 273 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:06:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-12 18:06:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-12 18:06:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 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) [2024-10-12 18:06:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-10-12 18:06:23,724 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 55 [2024-10-12 18:06:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:23,724 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-10-12 18:06:23,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-10-12 18:06:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 18:06:23,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:23,726 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] [2024-10-12 18:06:23,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 18:06:23,926 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 [2024-10-12 18:06:23,927 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:23,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1849547982, now seen corresponding path program 2 times [2024-10-12 18:06:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839242103] [2024-10-12 18:06:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 18:06:25,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:25,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839242103] [2024-10-12 18:06:25,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839242103] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:25,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95534652] [2024-10-12 18:06:25,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:06:25,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:25,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:25,005 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) [2024-10-12 18:06:25,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:06:26,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:06:26,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:06:26,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 6052 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 18:06:26,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:06:26,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:06:26,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95534652] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:26,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:26,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 8] total 12 [2024-10-12 18:06:26,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111597095] [2024-10-12 18:06:26,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:26,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:06:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:26,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:06:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:06:26,519 INFO L87 Difference]: Start difference. First operand 72 states and 95 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) [2024-10-12 18:06:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:26,889 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2024-10-12 18:06:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:06:26,890 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 [2024-10-12 18:06:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:26,890 INFO L225 Difference]: With dead ends: 82 [2024-10-12 18:06:26,891 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 18:06:26,891 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 [2024-10-12 18:06:26,892 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:26,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:06:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 18:06:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-12 18:06:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 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) [2024-10-12 18:06:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-12 18:06:26,897 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2024-10-12 18:06:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:26,897 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-12 18:06:26,897 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) [2024-10-12 18:06:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-12 18:06:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-12 18:06:26,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:26,898 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] [2024-10-12 18:06:26,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 18:06:27,099 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 [2024-10-12 18:06:27,099 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:27,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 1 times [2024-10-12 18:06:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:27,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221588965] [2024-10-12 18:06:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:27,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:06:28,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221588965] [2024-10-12 18:06:28,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221588965] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400113069] [2024-10-12 18:06:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:28,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:28,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:28,159 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) [2024-10-12 18:06:28,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:06:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:29,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 6066 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:06:29,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 18:06:29,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-12 18:06:29,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400113069] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:06:29,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:06:29,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-12 18:06:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529013757] [2024-10-12 18:06:29,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:06:29,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 18:06:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:29,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 18:06:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:06:29,558 INFO L87 Difference]: Start difference. First operand 73 states and 96 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) [2024-10-12 18:06:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:30,011 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2024-10-12 18:06:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 18:06:30,011 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 [2024-10-12 18:06:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:30,012 INFO L225 Difference]: With dead ends: 128 [2024-10-12 18:06:30,012 INFO L226 Difference]: Without dead ends: 83 [2024-10-12 18:06:30,013 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 [2024-10-12 18:06:30,013 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 [2024-10-12 18:06:30,014 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] [2024-10-12 18:06:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-12 18:06:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-12 18:06:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-12 18:06:30,020 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 68 [2024-10-12 18:06:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:30,021 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-12 18:06:30,021 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) [2024-10-12 18:06:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-12 18:06:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 18:06:30,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:30,022 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] [2024-10-12 18:06:30,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 18:06:30,222 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 [2024-10-12 18:06:30,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:30,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 2 times [2024-10-12 18:06:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739610851] [2024-10-12 18:06:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 18:06:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739610851] [2024-10-12 18:06:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739610851] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882732522] [2024-10-12 18:06:31,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:06:31,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:31,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:31,360 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) [2024-10-12 18:06:31,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:06:32,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:06:32,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:06:32,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 6131 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 18:06:32,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:06:32,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-12 18:06:32,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882732522] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:06:32,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:06:32,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 5] total 14 [2024-10-12 18:06:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143855863] [2024-10-12 18:06:32,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:06:32,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 18:06:32,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 18:06:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:06:32,758 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:33,961 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2024-10-12 18:06:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 18:06:33,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 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 [2024-10-12 18:06:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:33,963 INFO L225 Difference]: With dead ends: 146 [2024-10-12 18:06:33,963 INFO L226 Difference]: Without dead ends: 92 [2024-10-12 18:06:33,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-12 18:06:33,964 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:33,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 552 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 18:06:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-12 18:06:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-10-12 18:06:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 89 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2024-10-12 18:06:33,971 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 78 [2024-10-12 18:06:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:33,972 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2024-10-12 18:06:33,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2024-10-12 18:06:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 18:06:33,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:33,973 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:06:34,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 18:06:34,173 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 [2024-10-12 18:06:34,174 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:34,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:34,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1427743436, now seen corresponding path program 3 times [2024-10-12 18:06:34,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:34,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293379771] [2024-10-12 18:06:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:34,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-12 18:06:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293379771] [2024-10-12 18:06:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293379771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330202928] [2024-10-12 18:06:35,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:06:35,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:35,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:35,435 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) [2024-10-12 18:06:35,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 18:06:36,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:06:36,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:06:36,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 5998 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:06:36,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 18:06:36,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 18:06:36,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330202928] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:36,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:36,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2024-10-12 18:06:36,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723856309] [2024-10-12 18:06:36,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:36,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:06:36,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:06:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:06:36,898 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2024-10-12 18:06:37,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:37,418 INFO L93 Difference]: Finished difference Result 149 states and 198 transitions. [2024-10-12 18:06:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:06:37,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 85 [2024-10-12 18:06:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:37,421 INFO L225 Difference]: With dead ends: 149 [2024-10-12 18:06:37,421 INFO L226 Difference]: Without dead ends: 91 [2024-10-12 18:06:37,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:06:37,422 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:37,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 213 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:06:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-12 18:06:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-12 18:06:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 90 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2024-10-12 18:06:37,432 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 85 [2024-10-12 18:06:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:37,433 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2024-10-12 18:06:37,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2024-10-12 18:06:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2024-10-12 18:06:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-12 18:06:37,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:37,436 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:06:37,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 18:06:37,637 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 [2024-10-12 18:06:37,637 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:37,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash -254940994, now seen corresponding path program 1 times [2024-10-12 18:06:37,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:37,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712473433] [2024-10-12 18:06:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-12 18:06:38,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712473433] [2024-10-12 18:06:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712473433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299145865] [2024-10-12 18:06:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:38,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:38,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:38,792 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) [2024-10-12 18:06:38,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 18:06:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:40,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 6188 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:06:40,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 18:06:40,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-12 18:06:40,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299145865] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:40,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:40,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-12 18:06:40,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460535514] [2024-10-12 18:06:40,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:40,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:06:40,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:06:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:06:40,159 INFO L87 Difference]: Start difference. First operand 91 states and 119 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) [2024-10-12 18:06:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:40,556 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2024-10-12 18:06:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:06:40,557 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 88 [2024-10-12 18:06:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:40,558 INFO L225 Difference]: With dead ends: 126 [2024-10-12 18:06:40,558 INFO L226 Difference]: Without dead ends: 92 [2024-10-12 18:06:40,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:06:40,559 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:40,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:06:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-12 18:06:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-10-12 18:06:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 91 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2024-10-12 18:06:40,569 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 88 [2024-10-12 18:06:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:40,569 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2024-10-12 18:06:40,570 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) [2024-10-12 18:06:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2024-10-12 18:06:40,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 18:06:40,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:40,571 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:06:40,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 18:06:40,771 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 [2024-10-12 18:06:40,772 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:40,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1646108218, now seen corresponding path program 1 times [2024-10-12 18:06:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:40,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311597028] [2024-10-12 18:06:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-12 18:06:41,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:41,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311597028] [2024-10-12 18:06:41,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311597028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:41,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186748177] [2024-10-12 18:06:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:41,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:41,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:41,932 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) [2024-10-12 18:06:41,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 18:06:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:43,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 6202 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:06:43,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 18:06:43,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-12 18:06:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186748177] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:43,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-12 18:06:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826731577] [2024-10-12 18:06:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:43,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:06:43,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:06:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:06:43,297 INFO L87 Difference]: Start difference. First operand 92 states and 120 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) [2024-10-12 18:06:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:43,665 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2024-10-12 18:06:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:06:43,666 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 91 [2024-10-12 18:06:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:43,667 INFO L225 Difference]: With dead ends: 128 [2024-10-12 18:06:43,667 INFO L226 Difference]: Without dead ends: 93 [2024-10-12 18:06:43,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:06:43,668 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:43,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:06:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-12 18:06:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-10-12 18:06:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.315217391304348) internal successors, (121), 92 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 121 transitions. [2024-10-12 18:06:43,674 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 121 transitions. Word has length 91 [2024-10-12 18:06:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:43,675 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 121 transitions. [2024-10-12 18:06:43,675 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) [2024-10-12 18:06:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 121 transitions. [2024-10-12 18:06:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 18:06:43,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:43,676 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:06:43,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 18:06:43,877 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 [2024-10-12 18:06:43,877 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:43,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:43,877 INFO L85 PathProgramCache]: Analyzing trace with hash -613875054, now seen corresponding path program 1 times [2024-10-12 18:06:43,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:43,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319726338] [2024-10-12 18:06:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-12 18:06:44,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:44,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319726338] [2024-10-12 18:06:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319726338] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:44,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923522004] [2024-10-12 18:06:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:44,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:44,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:44,907 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) [2024-10-12 18:06:44,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 18:06:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:46,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 6205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:06:46,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-12 18:06:46,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-12 18:06:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923522004] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:06:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-12 18:06:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090711944] [2024-10-12 18:06:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:06:46,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:06:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:06:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:06:46,290 INFO L87 Difference]: Start difference. First operand 93 states and 121 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:46,675 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2024-10-12 18:06:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:06:46,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-10-12 18:06:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:46,676 INFO L225 Difference]: With dead ends: 108 [2024-10-12 18:06:46,676 INFO L226 Difference]: Without dead ends: 95 [2024-10-12 18:06:46,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:06:46,677 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:46,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:06:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-12 18:06:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-12 18:06:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 94 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2024-10-12 18:06:46,685 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 92 [2024-10-12 18:06:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:46,686 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2024-10-12 18:06:46,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2024-10-12 18:06:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 18:06:46,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:46,687 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:06:46,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 18:06:46,888 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 [2024-10-12 18:06:46,888 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:46,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1906087440, now seen corresponding path program 1 times [2024-10-12 18:06:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:46,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252096644] [2024-10-12 18:06:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 18:06:48,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252096644] [2024-10-12 18:06:48,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252096644] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:48,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623512499] [2024-10-12 18:06:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:48,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:48,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:48,196 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) [2024-10-12 18:06:48,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 18:06:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:49,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 6211 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:06:49,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 18:06:49,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:06:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623512499] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:06:49,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:06:49,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2024-10-12 18:06:49,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076002472] [2024-10-12 18:06:49,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:06:49,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 18:06:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 18:06:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:06:49,779 INFO L87 Difference]: Start difference. First operand 95 states and 123 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) [2024-10-12 18:06:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:51,730 INFO L93 Difference]: Finished difference Result 181 states and 243 transitions. [2024-10-12 18:06:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 18:06:51,731 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 94 [2024-10-12 18:06:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:51,732 INFO L225 Difference]: With dead ends: 181 [2024-10-12 18:06:51,732 INFO L226 Difference]: Without dead ends: 116 [2024-10-12 18:06:51,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:06:51,733 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:51,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 946 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 18:06:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-12 18:06:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-10-12 18:06:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 113 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) [2024-10-12 18:06:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2024-10-12 18:06:51,744 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 94 [2024-10-12 18:06:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:51,744 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2024-10-12 18:06:51,745 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) [2024-10-12 18:06:51,745 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2024-10-12 18:06:51,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-12 18:06:51,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:51,746 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:06:51,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 18:06:51,946 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 [2024-10-12 18:06:51,947 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:51,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:51,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1649604661, now seen corresponding path program 2 times [2024-10-12 18:06:51,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:51,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125480071] [2024-10-12 18:06:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-12 18:06:53,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125480071] [2024-10-12 18:06:53,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125480071] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:53,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474520890] [2024-10-12 18:06:53,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:06:53,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:53,175 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) [2024-10-12 18:06:53,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 18:06:54,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:06:54,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:06:54,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 6330 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-12 18:06:54,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:06:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-12 18:06:54,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:06:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:06:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474520890] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:06:55,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:06:55,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 26 [2024-10-12 18:06:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109410079] [2024-10-12 18:06:55,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:06:55,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 18:06:55,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:06:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 18:06:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:06:55,146 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 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) [2024-10-12 18:06:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:06:56,922 INFO L93 Difference]: Finished difference Result 219 states and 294 transitions. [2024-10-12 18:06:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 18:06:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-10-12 18:06:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:06:56,924 INFO L225 Difference]: With dead ends: 219 [2024-10-12 18:06:56,924 INFO L226 Difference]: Without dead ends: 136 [2024-10-12 18:06:56,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2024-10-12 18:06:56,925 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 64 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:06:56,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 929 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 18:06:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-10-12 18:06:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-10-12 18:06:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.3111111111111111) internal successors, (177), 135 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:06:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 177 transitions. [2024-10-12 18:06:56,937 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 177 transitions. Word has length 113 [2024-10-12 18:06:56,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:06:56,937 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 177 transitions. [2024-10-12 18:06:56,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 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) [2024-10-12 18:06:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 177 transitions. [2024-10-12 18:06:56,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-12 18:06:56,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:06:56,939 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:06:56,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 18:06:57,139 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 [2024-10-12 18:06:57,140 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:06:57,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:06:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1038168043, now seen corresponding path program 3 times [2024-10-12 18:06:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:06:57,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206859631] [2024-10-12 18:06:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:06:57,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:06:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:06:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-10-12 18:06:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:06:58,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206859631] [2024-10-12 18:06:58,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206859631] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:06:58,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006790221] [2024-10-12 18:06:58,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:06:58,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:06:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:06:58,600 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) [2024-10-12 18:06:58,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 18:07:00,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 18:07:00,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:07:00,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 6098 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 18:07:00,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:07:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-10-12 18:07:00,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:07:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-10-12 18:07:00,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006790221] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:07:00,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:07:00,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2024-10-12 18:07:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001481065] [2024-10-12 18:07:00,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:07:00,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:07:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:07:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:07:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:07:00,726 INFO L87 Difference]: Start difference. First operand 136 states and 177 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:07:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:07:01,140 INFO L93 Difference]: Finished difference Result 239 states and 314 transitions. [2024-10-12 18:07:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:07:01,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-10-12 18:07:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:07:01,141 INFO L225 Difference]: With dead ends: 239 [2024-10-12 18:07:01,141 INFO L226 Difference]: Without dead ends: 137 [2024-10-12 18:07:01,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:07:01,142 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:07:01,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 164 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:07:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-10-12 18:07:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-10-12 18:07:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3088235294117647) internal successors, (178), 136 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:07:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 178 transitions. [2024-10-12 18:07:01,150 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 178 transitions. Word has length 135 [2024-10-12 18:07:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:07:01,150 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 178 transitions. [2024-10-12 18:07:01,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:07:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 178 transitions. [2024-10-12 18:07:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-12 18:07:01,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:07:01,152 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:07:01,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-12 18:07:01,352 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 [2024-10-12 18:07:01,353 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:07:01,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:07:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash -31100625, now seen corresponding path program 1 times [2024-10-12 18:07:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:07:01,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845969976] [2024-10-12 18:07:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:07:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:07:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:07:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-10-12 18:07:02,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:07:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845969976] [2024-10-12 18:07:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845969976] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:07:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608948046] [2024-10-12 18:07:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:07:02,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:07:02,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:07:02,710 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) [2024-10-12 18:07:02,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 18:07:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:07:04,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 6470 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-12 18:07:04,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:07:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-12 18:07:04,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:07:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-12 18:07:04,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608948046] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:07:04,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:07:04,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 24, 13] total 42 [2024-10-12 18:07:04,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312769480] [2024-10-12 18:07:04,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:07:04,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 18:07:04,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:07:04,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 18:07:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:07:04,998 INFO L87 Difference]: Start difference. First operand 137 states and 178 transitions. Second operand has 42 states, 42 states have (on average 4.619047619047619) internal successors, (194), 42 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)