./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/robot_8_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/robot_8_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2f5362793be3c13810cfe8799d241d4e91fabd74f372ee74a6a5c28ed6d9127 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:09:38,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:09:38,122 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:09:38,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:09:38,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:09:38,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:09:38,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:09:38,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:09:38,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:09:38,185 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:09:38,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:09:38,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:09:38,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:09:38,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:09:38,187 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:09:38,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:09:38,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:09:38,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:09:38,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:09:38,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:09:38,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:09:38,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:09:38,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:09:38,192 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:09:38,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:09:38,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:09:38,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:09:38,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:09:38,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:09:38,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:09:38,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:09:38,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:09:38,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:09:38,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:09:38,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:09:38,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:09:38,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:09:38,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:09:38,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:09:38,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:09:38,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:09:38,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:09:38,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f5362793be3c13810cfe8799d241d4e91fabd74f372ee74a6a5c28ed6d9127 [2024-10-12 18:09:38,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:09:38,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:09:38,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:09:38,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:09:38,457 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:09:38,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/robot_8_safe.c-amalgamation.i [2024-10-12 18:09:39,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:09:40,210 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:09:40,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/robot_8_safe.c-amalgamation.i [2024-10-12 18:09:40,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af0add07/2cae5a41cb704d4bae97b581e79a7f34/FLAGf0cb40698 [2024-10-12 18:09:40,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af0add07/2cae5a41cb704d4bae97b581e79a7f34 [2024-10-12 18:09:40,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:09:40,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:09:40,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:09:40,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:09:40,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:09:40,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:09:40" (1/1) ... [2024-10-12 18:09:40,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c55dc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:40, skipping insertion in model container [2024-10-12 18:09:40,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:09:40" (1/1) ... [2024-10-12 18:09:40,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:09:40,979 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/robot_8_safe.c-amalgamation.i[63906,63919] [2024-10-12 18:09:41,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:09:41,381 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:09:41,494 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/robot_8_safe.c-amalgamation.i[63906,63919] [2024-10-12 18:09:41,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:09:41,948 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:09:41,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41 WrapperNode [2024-10-12 18:09:41,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:09:41,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:09:41,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:09:41,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:09:41,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:42,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:42,510 INFO L138 Inliner]: procedures = 621, calls = 9239, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 9600 [2024-10-12 18:09:42,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:09:42,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:09:42,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:09:42,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:09:42,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:42,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:42,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:42,709 INFO L175 MemorySlicer]: Split 9211 memory accesses to 14 slices as follows [2, 7, 321, 65, 4097, 65, 4097, 16, 65, 321, 6, 73, 70, 6]. 44 percent of accesses are in the largest equivalence class. The 9166 initializations are split as follows [2, 7, 320, 64, 4096, 64, 4096, 0, 64, 320, 5, 64, 64, 0]. The 12 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 3, 3, 1]. [2024-10-12 18:09:42,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:42,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:43,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:43,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:43,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:43,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:43,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:09:43,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:09:43,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:09:43,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:09:43,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (1/1) ... [2024-10-12 18:09:43,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:09:43,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:09:43,281 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 18:09:43,284 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 18:09:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-12 18:09:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-12 18:09:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2024-10-12 18:09:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 18:09:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-12 18:09:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-12 18:09:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-12 18:09:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-12 18:09:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-12 18:09:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-12 18:09:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-12 18:09:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-12 18:09:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-12 18:09:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-12 18:09:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-12 18:09:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-12 18:09:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2024-10-12 18:09:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2024-10-12 18:09:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-12 18:09:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-12 18:09:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-12 18:09:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:09:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 18:09:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-12 18:09:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-12 18:09:43,605 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:09:43,607 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:10:00,004 INFO L? ?]: Removed 170 outVars from TransFormulas that were not future-live. [2024-10-12 18:10:00,004 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:10:00,393 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:10:00,394 INFO L314 CfgBuilder]: Removed 15 assume(true) statements. [2024-10-12 18:10:00,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:10:00 BoogieIcfgContainer [2024-10-12 18:10:00,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:10:00,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:10:00,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:10:00,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:10:00,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:09:40" (1/3) ... [2024-10-12 18:10:00,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1420ee79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:10:00, skipping insertion in model container [2024-10-12 18:10:00,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:41" (2/3) ... [2024-10-12 18:10:00,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1420ee79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:10:00, skipping insertion in model container [2024-10-12 18:10:00,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:10:00" (3/3) ... [2024-10-12 18:10:00,403 INFO L112 eAbstractionObserver]: Analyzing ICFG robot_8_safe.c-amalgamation.i [2024-10-12 18:10:00,419 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:10:00,419 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:10:00,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:10:00,480 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;@3bf2a834, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:10:00,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:10:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 18:10:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:10:00,492 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:00,493 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 18:10:00,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:00,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1999498850, now seen corresponding path program 1 times [2024-10-12 18:10:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:00,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125654279] [2024-10-12 18:10:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:00,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:02,147 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 18:10:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:02,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125654279] [2024-10-12 18:10:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125654279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:10:02,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:10:02,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:10:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233968919] [2024-10-12 18:10:02,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:02,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:10:02,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:10:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:10:02,179 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 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 18:10:02,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:02,595 INFO L93 Difference]: Finished difference Result 125 states and 217 transitions. [2024-10-12 18:10:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:10:02,600 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 18:10:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:02,607 INFO L225 Difference]: With dead ends: 125 [2024-10-12 18:10:02,608 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 18:10:02,611 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 18:10:02,614 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:02,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:10:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 18:10:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 18:10:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 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 18:10:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-10-12 18:10:02,648 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 39 [2024-10-12 18:10:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:02,648 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-10-12 18:10:02,648 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 18:10:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-10-12 18:10:02,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:10:02,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:02,650 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 18:10:02,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:10:02,651 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:02,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1543540249, now seen corresponding path program 1 times [2024-10-12 18:10:02,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:02,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617230741] [2024-10-12 18:10:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:02,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:03,733 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 18:10:03,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617230741] [2024-10-12 18:10:03,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617230741] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:10:03,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:10:03,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:10:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117134554] [2024-10-12 18:10:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:03,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:10:03,737 INFO L87 Difference]: Start difference. First operand 62 states and 88 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 18:10:04,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:04,253 INFO L93 Difference]: Finished difference Result 116 states and 165 transitions. [2024-10-12 18:10:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:04,254 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 18:10:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:04,255 INFO L225 Difference]: With dead ends: 116 [2024-10-12 18:10:04,255 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 18:10:04,255 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 18:10:04,256 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:04,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:10:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 18:10:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 18:10:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2024-10-12 18:10:04,265 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 39 [2024-10-12 18:10:04,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:04,265 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2024-10-12 18:10:04,265 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 18:10:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2024-10-12 18:10:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:10:04,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:04,266 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 18:10:04,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:10:04,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:04,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1268780635, now seen corresponding path program 1 times [2024-10-12 18:10:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:04,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698799404] [2024-10-12 18:10:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:04,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:05,914 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 18:10:05,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:05,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698799404] [2024-10-12 18:10:05,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698799404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:10:05,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:10:05,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:10:05,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973303487] [2024-10-12 18:10:05,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:05,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:05,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:05,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:10:05,921 INFO L87 Difference]: Start difference. First operand 62 states and 87 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 18:10:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:06,485 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-10-12 18:10:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:06,486 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 18:10:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:06,487 INFO L225 Difference]: With dead ends: 102 [2024-10-12 18:10:06,487 INFO L226 Difference]: Without dead ends: 65 [2024-10-12 18:10:06,487 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 18:10:06,488 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:06,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:10:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-12 18:10:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-10-12 18:10:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 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 18:10:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-10-12 18:10:06,495 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 39 [2024-10-12 18:10:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:06,495 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-10-12 18:10:06,496 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 18:10:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-10-12 18:10:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:10:06,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:06,497 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] [2024-10-12 18:10:06,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:10:06,497 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:06,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1666113522, now seen corresponding path program 1 times [2024-10-12 18:10:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:06,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523571171] [2024-10-12 18:10:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:08,255 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 18:10:08,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:08,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523571171] [2024-10-12 18:10:08,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523571171] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537575092] [2024-10-12 18:10:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:08,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:08,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:08,262 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 18:10:08,265 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 18:10:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:10,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 9774 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:10:10,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:10,541 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 18:10:10,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:10,570 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 18:10:10,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537575092] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:10,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:10:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404921225] [2024-10-12 18:10:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:10,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:10,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:10:10,576 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:10:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:11,076 INFO L93 Difference]: Finished difference Result 91 states and 128 transitions. [2024-10-12 18:10:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:11,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-10-12 18:10:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:11,078 INFO L225 Difference]: With dead ends: 91 [2024-10-12 18:10:11,078 INFO L226 Difference]: Without dead ends: 64 [2024-10-12 18:10:11,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 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 18:10:11,079 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:11,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:10:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-12 18:10:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-12 18:10:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2024-10-12 18:10:11,085 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 42 [2024-10-12 18:10:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:11,085 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2024-10-12 18:10:11,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:10:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2024-10-12 18:10:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-12 18:10:11,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:11,087 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] [2024-10-12 18:10:11,138 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 18:10:11,287 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 18:10:11,288 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:11,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1881213728, now seen corresponding path program 1 times [2024-10-12 18:10:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150247984] [2024-10-12 18:10:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:12,856 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 18:10:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150247984] [2024-10-12 18:10:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150247984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948356360] [2024-10-12 18:10:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:12,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:12,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:12,859 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 18:10:12,860 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 18:10:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:14,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 9792 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:10:14,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:14,656 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 18:10:14,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:14,669 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 18:10:14,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948356360] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:14,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:14,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:10:14,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800351543] [2024-10-12 18:10:14,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:14,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:14,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:10:14,671 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 18:10:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:15,102 INFO L93 Difference]: Finished difference Result 82 states and 114 transitions. [2024-10-12 18:10:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-10-12 18:10:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:15,104 INFO L225 Difference]: With dead ends: 82 [2024-10-12 18:10:15,104 INFO L226 Difference]: Without dead ends: 65 [2024-10-12 18:10:15,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 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 18:10:15,105 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:15,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:10:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-12 18:10:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-12 18:10:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-10-12 18:10:15,114 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 45 [2024-10-12 18:10:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:15,115 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-10-12 18:10:15,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 18:10:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-10-12 18:10:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-12 18:10:15,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:15,117 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] [2024-10-12 18:10:15,158 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 18:10:15,317 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 18:10:15,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:15,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:15,318 INFO L85 PathProgramCache]: Analyzing trace with hash -655161778, now seen corresponding path program 1 times [2024-10-12 18:10:15,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:15,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450952640] [2024-10-12 18:10:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:15,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:16,771 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 18:10:16,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:16,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450952640] [2024-10-12 18:10:16,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450952640] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:16,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977048506] [2024-10-12 18:10:16,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:16,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:16,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:16,777 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 18:10:16,779 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 18:10:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:18,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 9810 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:10:18,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:18,454 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 18:10:18,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:10:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977048506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:10:18,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:10:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 18:10:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380341234] [2024-10-12 18:10:18,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:18,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:10:18,457 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 18:10:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:18,890 INFO L93 Difference]: Finished difference Result 114 states and 160 transitions. [2024-10-12 18:10:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-10-12 18:10:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:18,891 INFO L225 Difference]: With dead ends: 114 [2024-10-12 18:10:18,891 INFO L226 Difference]: Without dead ends: 70 [2024-10-12 18:10:18,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:10:18,892 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:18,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 124 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:10:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-12 18:10:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-10-12 18:10:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2024-10-12 18:10:18,897 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 48 [2024-10-12 18:10:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:18,898 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2024-10-12 18:10:18,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 18:10:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2024-10-12 18:10:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 18:10:18,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:18,899 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] [2024-10-12 18:10:18,939 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 18:10:19,099 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 18:10:19,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:19,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash 787380296, now seen corresponding path program 1 times [2024-10-12 18:10:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214668556] [2024-10-12 18:10:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:19,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:20,461 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 18:10:20,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214668556] [2024-10-12 18:10:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214668556] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164922814] [2024-10-12 18:10:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:20,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:20,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:20,464 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 18:10:20,465 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 18:10:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:22,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 9816 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:10:22,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:22,099 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 18:10:22,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:22,119 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 18:10:22,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164922814] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:22,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:22,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:10:22,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085087581] [2024-10-12 18:10:22,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:22,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:22,122 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 18:10:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:22,535 INFO L93 Difference]: Finished difference Result 100 states and 139 transitions. [2024-10-12 18:10:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:22,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-10-12 18:10:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:22,539 INFO L225 Difference]: With dead ends: 100 [2024-10-12 18:10:22,539 INFO L226 Difference]: Without dead ends: 67 [2024-10-12 18:10:22,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 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 18:10:22,540 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:22,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:10:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-12 18:10:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-12 18:10:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 18:10:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2024-10-12 18:10:22,547 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 51 [2024-10-12 18:10:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:22,547 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2024-10-12 18:10:22,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 18:10:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2024-10-12 18:10:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:10:22,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:22,548 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] [2024-10-12 18:10:22,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 18:10:22,749 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 18:10:22,749 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:22,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1651793648, now seen corresponding path program 1 times [2024-10-12 18:10:22,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:22,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548925351] [2024-10-12 18:10:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:24,155 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 18:10:24,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:24,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548925351] [2024-10-12 18:10:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548925351] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:24,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309603840] [2024-10-12 18:10:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:24,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:24,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:24,158 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 18:10:24,159 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 18:10:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:25,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 9822 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:10:25,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:25,951 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 18:10:25,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:25,972 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 18:10:25,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309603840] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:25,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:25,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:10:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829917647] [2024-10-12 18:10:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:25,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:25,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:25,975 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 18:10:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:26,412 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2024-10-12 18:10:26,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:26,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-10-12 18:10:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:26,413 INFO L225 Difference]: With dead ends: 90 [2024-10-12 18:10:26,414 INFO L226 Difference]: Without dead ends: 68 [2024-10-12 18:10:26,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 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 18:10:26,414 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:26,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:10:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-12 18:10:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-10-12 18:10:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 18:10:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2024-10-12 18:10:26,422 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 54 [2024-10-12 18:10:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:26,422 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 93 transitions. [2024-10-12 18:10:26,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 18:10:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions. [2024-10-12 18:10:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 18:10:26,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:26,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:26,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 18:10:26,627 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 18:10:26,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:26,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 152863130, now seen corresponding path program 1 times [2024-10-12 18:10:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210087148] [2024-10-12 18:10:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:27,930 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 18:10:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210087148] [2024-10-12 18:10:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210087148] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033908949] [2024-10-12 18:10:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:27,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:27,932 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 18:10:27,932 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 18:10:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:29,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 9828 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:10:29,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:29,631 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 18:10:29,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:29,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033908949] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:29,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:29,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:10:29,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440683097] [2024-10-12 18:10:29,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:29,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:29,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:29,646 INFO L87 Difference]: Start difference. First operand 68 states and 93 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 18:10:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:30,060 INFO L93 Difference]: Finished difference Result 80 states and 109 transitions. [2024-10-12 18:10:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:30,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-10-12 18:10:30,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:30,061 INFO L225 Difference]: With dead ends: 80 [2024-10-12 18:10:30,061 INFO L226 Difference]: Without dead ends: 69 [2024-10-12 18:10:30,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 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 18:10:30,062 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:30,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:10:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-12 18:10:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-12 18:10:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 68 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2024-10-12 18:10:30,072 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 57 [2024-10-12 18:10:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:30,072 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2024-10-12 18:10:30,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 18:10:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2024-10-12 18:10:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 18:10:30,073 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:30,073 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:30,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:10:30,274 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 18:10:30,274 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:30,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1209571778, now seen corresponding path program 1 times [2024-10-12 18:10:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:30,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438535907] [2024-10-12 18:10:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438535907] [2024-10-12 18:10:31,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438535907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492731633] [2024-10-12 18:10:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:31,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:31,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:31,525 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 18:10:31,526 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 18:10:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:33,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 9834 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:10:33,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:33,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492731633] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:10:33,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:10:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-12 18:10:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998903147] [2024-10-12 18:10:33,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:10:33,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 18:10:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 18:10:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:33,357 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 18:10:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:33,939 INFO L93 Difference]: Finished difference Result 120 states and 167 transitions. [2024-10-12 18:10:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:10:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 60 [2024-10-12 18:10:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:33,941 INFO L225 Difference]: With dead ends: 120 [2024-10-12 18:10:33,941 INFO L226 Difference]: Without dead ends: 78 [2024-10-12 18:10:33,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:10:33,943 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 15 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:33,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 247 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:10:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-12 18:10:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-12 18:10:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:10:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-10-12 18:10:33,952 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 60 [2024-10-12 18:10:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:33,952 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-10-12 18:10:33,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 18:10:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-10-12 18:10:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-12 18:10:33,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:33,953 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:34,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 18:10:34,154 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 18:10:34,154 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:34,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash 829702057, now seen corresponding path program 2 times [2024-10-12 18:10:34,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:34,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464285541] [2024-10-12 18:10:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:34,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:35,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:35,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464285541] [2024-10-12 18:10:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464285541] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:35,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502495938] [2024-10-12 18:10:35,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:10:35,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:35,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:35,721 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 18:10:35,722 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 18:10:37,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:10:37,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:10:37,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 9888 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:10:37,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 18:10:37,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:10:37,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502495938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:10:37,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:10:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-12 18:10:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276730931] [2024-10-12 18:10:37,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:10:37,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:10:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:10:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:10:37,542 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:38,121 INFO L93 Difference]: Finished difference Result 134 states and 187 transitions. [2024-10-12 18:10:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:10:38,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-12 18:10:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:38,123 INFO L225 Difference]: With dead ends: 134 [2024-10-12 18:10:38,123 INFO L226 Difference]: Without dead ends: 92 [2024-10-12 18:10:38,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:10:38,124 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 27 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:38,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 320 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:10:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-12 18:10:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-10-12 18:10:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 89 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 122 transitions. [2024-10-12 18:10:38,128 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 122 transitions. Word has length 69 [2024-10-12 18:10:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:38,129 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 122 transitions. [2024-10-12 18:10:38,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 122 transitions. [2024-10-12 18:10:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 18:10:38,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:38,130 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:38,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 18:10:38,331 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 18:10:38,331 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:38,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1700687192, now seen corresponding path program 3 times [2024-10-12 18:10:38,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:38,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658733907] [2024-10-12 18:10:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:38,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:10:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658733907] [2024-10-12 18:10:40,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658733907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473173173] [2024-10-12 18:10:40,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:10:40,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:40,036 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 18:10:40,037 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 18:10:41,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:10:41,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:10:41,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 9834 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:10:41,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-12 18:10:41,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:10:41,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473173173] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:10:41,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:10:41,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 13 [2024-10-12 18:10:41,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12571543] [2024-10-12 18:10:41,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:10:41,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 18:10:41,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:41,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 18:10:41,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:10:41,956 INFO L87 Difference]: Start difference. First operand 90 states and 122 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:10:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:42,807 INFO L93 Difference]: Finished difference Result 159 states and 221 transitions. [2024-10-12 18:10:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:10:42,807 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 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 81 [2024-10-12 18:10:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:42,808 INFO L225 Difference]: With dead ends: 159 [2024-10-12 18:10:42,808 INFO L226 Difference]: Without dead ends: 108 [2024-10-12 18:10:42,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:10:42,809 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 30 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:42,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 562 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 18:10:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-12 18:10:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2024-10-12 18:10:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 101 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:42,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 138 transitions. [2024-10-12 18:10:42,818 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 138 transitions. Word has length 81 [2024-10-12 18:10:42,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:42,819 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 138 transitions. [2024-10-12 18:10:42,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:10:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 138 transitions. [2024-10-12 18:10:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 18:10:42,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:42,822 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:42,886 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 18:10:43,022 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 18:10:43,022 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:43,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash 205873381, now seen corresponding path program 4 times [2024-10-12 18:10:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:43,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136645484] [2024-10-12 18:10:43,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:43,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 18:10:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136645484] [2024-10-12 18:10:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136645484] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833957236] [2024-10-12 18:10:44,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:10:44,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:44,749 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 18:10:44,750 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 18:10:46,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:10:46,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:10:46,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 10032 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:10:46,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-12 18:10:46,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-10-12 18:10:46,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833957236] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:10:46,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:10:46,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 7] total 19 [2024-10-12 18:10:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624345804] [2024-10-12 18:10:46,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:10:46,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 18:10:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 18:10:46,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:10:46,613 INFO L87 Difference]: Start difference. First operand 102 states and 138 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:47,887 INFO L93 Difference]: Finished difference Result 185 states and 258 transitions. [2024-10-12 18:10:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:10:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-12 18:10:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:47,888 INFO L225 Difference]: With dead ends: 185 [2024-10-12 18:10:47,888 INFO L226 Difference]: Without dead ends: 125 [2024-10-12 18:10:47,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-10-12 18:10:47,889 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 56 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:47,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 811 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 18:10:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-12 18:10:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-10-12 18:10:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.360655737704918) internal successors, (166), 122 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 18:10:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 166 transitions. [2024-10-12 18:10:47,896 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 166 transitions. Word has length 93 [2024-10-12 18:10:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:47,897 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 166 transitions. [2024-10-12 18:10:47,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:10:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 166 transitions. [2024-10-12 18:10:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-12 18:10:47,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:47,898 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:47,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 18:10:48,098 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 18:10:48,099 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:48,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash 273946618, now seen corresponding path program 5 times [2024-10-12 18:10:48,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:48,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023493076] [2024-10-12 18:10:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-10-12 18:10:49,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023493076] [2024-10-12 18:10:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023493076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651218566] [2024-10-12 18:10:49,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:10:49,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:49,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:49,952 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 18:10:49,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process