./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_56_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/cartpole_56_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 6ecfb4dad94f5418585e76a27903efe1d86c5e67a7468f3052d906babff750d3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 17:37:55,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 17:37:55,310 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 17:37:55,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 17:37:55,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 17:37:55,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 17:37:55,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 17:37:55,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 17:37:55,336 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 17:37:55,336 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 17:37:55,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 17:37:55,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 17:37:55,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 17:37:55,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 17:37:55,339 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 17:37:55,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 17:37:55,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 17:37:55,340 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 17:37:55,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 17:37:55,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 17:37:55,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 17:37:55,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 17:37:55,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 17:37:55,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 17:37:55,343 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 17:37:55,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 17:37:55,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 17:37:55,344 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 17:37:55,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 17:37:55,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 17:37:55,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 17:37:55,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 17:37:55,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:37:55,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 17:37:55,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 17:37:55,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 17:37:55,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 17:37:55,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 17:37:55,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 17:37:55,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 17:37:55,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 17:37:55,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 17:37:55,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ecfb4dad94f5418585e76a27903efe1d86c5e67a7468f3052d906babff750d3 [2024-10-12 17:37:55,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 17:37:55,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 17:37:55,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 17:37:55,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 17:37:55,612 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 17:37:55,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_56_safe.c-amalgamation.i [2024-10-12 17:37:57,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 17:37:57,376 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 17:37:57,377 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_56_safe.c-amalgamation.i [2024-10-12 17:37:57,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed81a927/c2ba02ac99bc4fb3a448a36cc8f0ff7b/FLAG5d79202a1 [2024-10-12 17:37:57,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed81a927/c2ba02ac99bc4fb3a448a36cc8f0ff7b [2024-10-12 17:37:57,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 17:37:57,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 17:37:57,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 17:37:57,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 17:37:57,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 17:37:57,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:37:57" (1/1) ... [2024-10-12 17:37:57,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb302e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:57, skipping insertion in model container [2024-10-12 17:37:57,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:37:57" (1/1) ... [2024-10-12 17:37:57,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 17:37:58,114 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_56_safe.c-amalgamation.i[63706,63719] [2024-10-12 17:37:58,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:37:58,411 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 17:37:58,461 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_56_safe.c-amalgamation.i[63706,63719] [2024-10-12 17:37:58,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:37:58,895 INFO L204 MainTranslator]: Completed translation [2024-10-12 17:37:58,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58 WrapperNode [2024-10-12 17:37:58,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 17:37:58,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 17:37:58,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 17:37:58,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 17:37:58,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:58,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,221 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-12 17:37:59,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 17:37:59,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 17:37:59,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 17:37:59,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 17:37:59,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,350 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 65, 4097, 65, 3, 129, 3, 10, 70, 13]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 64, 4096, 64, 0, 128, 2, 4, 64, 0]. The 10 writes are split as follows [0, 0, 0, 0, 0, 0, 1, 0, 0, 3, 2, 4]. [2024-10-12 17:37:59,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 17:37:59,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 17:37:59,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 17:37:59,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 17:37:59,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (1/1) ... [2024-10-12 17:37:59,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:37:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:37:59,600 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 17:37:59,605 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 17:37:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-12 17:37:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-12 17:37:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-12 17:37:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-12 17:37:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-12 17:37:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-12 17:37:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-12 17:37:59,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-12 17:37:59,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-12 17:37:59,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-12 17:37:59,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-12 17:37:59,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-12 17:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 17:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-12 17:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-12 17:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-12 17:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-12 17:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-12 17:37:59,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-12 17:37:59,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-12 17:37:59,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-12 17:37:59,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-12 17:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-12 17:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-12 17:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-12 17:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-12 17:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-12 17:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-12 17:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-12 17:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-12 17:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-12 17:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-12 17:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-12 17:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-12 17:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-12 17:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 17:37:59,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 17:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 17:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 17:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 17:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 17:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 17:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 17:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 17:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 17:37:59,870 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 17:37:59,872 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 17:38:05,864 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-12 17:38:05,864 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 17:38:06,142 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 17:38:06,143 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-12 17:38:06,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:38:06 BoogieIcfgContainer [2024-10-12 17:38:06,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 17:38:06,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 17:38:06,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 17:38:06,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 17:38:06,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:37:57" (1/3) ... [2024-10-12 17:38:06,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe95e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:38:06, skipping insertion in model container [2024-10-12 17:38:06,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:37:58" (2/3) ... [2024-10-12 17:38:06,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe95e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:38:06, skipping insertion in model container [2024-10-12 17:38:06,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:38:06" (3/3) ... [2024-10-12 17:38:06,152 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_56_safe.c-amalgamation.i [2024-10-12 17:38:06,168 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 17:38:06,168 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 17:38:06,231 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 17:38:06,240 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;@3d92b1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 17:38:06,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 17:38:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 17:38:06,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:06,251 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:06,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:06,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-12 17:38:06,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720900913] [2024-10-12 17:38:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:07,238 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 17:38:07,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720900913] [2024-10-12 17:38:07,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720900913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:38:07,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:38:07,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 17:38:07,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621252880] [2024-10-12 17:38:07,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:07,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 17:38:07,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 17:38:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 17:38:07,278 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:07,569 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-12 17:38:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 17:38:07,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-12 17:38:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:07,578 INFO L225 Difference]: With dead ends: 89 [2024-10-12 17:38:07,579 INFO L226 Difference]: Without dead ends: 44 [2024-10-12 17:38:07,581 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 17:38:07,586 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:07,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:38:07,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-12 17:38:07,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-12 17:38:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-12 17:38:07,617 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-12 17:38:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:07,617 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-12 17:38:07,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-12 17:38:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 17:38:07,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:07,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:07,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 17:38:07,619 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:07,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:07,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-12 17:38:07,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:07,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428404738] [2024-10-12 17:38:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:07,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:08,408 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 17:38:08,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:08,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428404738] [2024-10-12 17:38:08,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428404738] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:38:08,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:38:08,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 17:38:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497608477] [2024-10-12 17:38:08,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:08,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:38:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:38:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:38:08,415 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:08,706 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-12 17:38:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:38:08,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-12 17:38:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:08,709 INFO L225 Difference]: With dead ends: 80 [2024-10-12 17:38:08,709 INFO L226 Difference]: Without dead ends: 44 [2024-10-12 17:38:08,709 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 17:38:08,710 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:08,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:38:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-12 17:38:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-12 17:38:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-12 17:38:08,718 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-12 17:38:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:08,718 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-12 17:38:08,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-12 17:38:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 17:38:08,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:08,719 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:08,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 17:38:08,720 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:08,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-12 17:38:08,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566115566] [2024-10-12 17:38:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:09,666 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 17:38:09,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:09,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566115566] [2024-10-12 17:38:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566115566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:38:09,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:38:09,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 17:38:09,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490225194] [2024-10-12 17:38:09,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:09,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:38:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:38:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:38:09,669 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:09,960 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-12 17:38:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:38:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-12 17:38:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:09,962 INFO L225 Difference]: With dead ends: 75 [2024-10-12 17:38:09,962 INFO L226 Difference]: Without dead ends: 45 [2024-10-12 17:38:09,962 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 17:38:09,963 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:09,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:38:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-12 17:38:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-12 17:38:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-12 17:38:09,975 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-12 17:38:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:09,975 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-12 17:38:09,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-12 17:38:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 17:38:09,976 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:09,976 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:09,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 17:38:09,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:09,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-12 17:38:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:09,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816607840] [2024-10-12 17:38:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:11,046 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 17:38:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816607840] [2024-10-12 17:38:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816607840] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439321764] [2024-10-12 17:38:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:11,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:11,052 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 17:38:11,060 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 17:38:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:12,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 17:38:12,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:12,552 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 17:38:12,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:12,582 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 17:38:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439321764] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 17:38:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22799762] [2024-10-12 17:38:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:12,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:38:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:38:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:38:12,588 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:12,878 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-12 17:38:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:38:12,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-12 17:38:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:12,880 INFO L225 Difference]: With dead ends: 66 [2024-10-12 17:38:12,880 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 17:38:12,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:38:12,883 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:12,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:38:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 17:38:12,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-12 17:38:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-12 17:38:12,896 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-12 17:38:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:12,896 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-12 17:38:12,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-12 17:38:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-12 17:38:12,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:12,899 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] [2024-10-12 17:38:12,927 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 17:38:13,099 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 17:38:13,100 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:13,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-12 17:38:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389418598] [2024-10-12 17:38:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:14,084 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 17:38:14,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:14,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389418598] [2024-10-12 17:38:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389418598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418905411] [2024-10-12 17:38:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:14,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:14,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:14,089 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 17:38:14,091 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 17:38:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:15,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 17:38:15,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:15,262 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 17:38:15,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:15,274 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 17:38:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418905411] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:15,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:15,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 17:38:15,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3623932] [2024-10-12 17:38:15,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:15,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:38:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:38:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:38:15,277 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:15,449 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-12 17:38:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:38:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-12 17:38:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:15,450 INFO L225 Difference]: With dead ends: 57 [2024-10-12 17:38:15,450 INFO L226 Difference]: Without dead ends: 47 [2024-10-12 17:38:15,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:38:15,452 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:15,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:15,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-12 17:38:15,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-12 17:38:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-12 17:38:15,456 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-12 17:38:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:15,456 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-12 17:38:15,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-12 17:38:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 17:38:15,457 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:15,458 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:15,480 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 17:38:15,658 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 17:38:15,658 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:15,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-12 17:38:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254296429] [2024-10-12 17:38:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:15,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:16,484 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 17:38:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254296429] [2024-10-12 17:38:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254296429] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:16,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331367565] [2024-10-12 17:38:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:16,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:16,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:16,488 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 17:38:16,489 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 17:38:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:17,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 17:38:17,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:17,526 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 17:38:17,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:17,539 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 17:38:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331367565] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:17,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:17,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 17:38:17,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039403565] [2024-10-12 17:38:17,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:17,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:38:17,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:38:17,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:38:17,542 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:17,705 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-12 17:38:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:38:17,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-12 17:38:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:17,706 INFO L225 Difference]: With dead ends: 74 [2024-10-12 17:38:17,706 INFO L226 Difference]: Without dead ends: 48 [2024-10-12 17:38:17,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:38:17,708 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:17,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-12 17:38:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-12 17:38:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-12 17:38:17,713 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-12 17:38:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:17,713 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-12 17:38:17,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-12 17:38:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 17:38:17,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:17,717 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:17,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 17:38:17,918 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 17:38:17,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:17,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-12 17:38:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:17,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235217616] [2024-10-12 17:38:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:17,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:18,730 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 17:38:18,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:18,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235217616] [2024-10-12 17:38:18,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235217616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:18,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263386762] [2024-10-12 17:38:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:18,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:18,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:18,735 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 17:38:18,737 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 17:38:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:19,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:38:19,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:19,717 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 17:38:19,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:19,732 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 17:38:19,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263386762] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:19,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:19,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 17:38:19,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835721043] [2024-10-12 17:38:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:19,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:38:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:38:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:38:19,735 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:19,940 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-12 17:38:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:38:19,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-12 17:38:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:19,941 INFO L225 Difference]: With dead ends: 64 [2024-10-12 17:38:19,942 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 17:38:19,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:38:19,942 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:19,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 17:38:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-12 17:38:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-12 17:38:19,947 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-12 17:38:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:19,947 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-12 17:38:19,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-12 17:38:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-12 17:38:19,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:19,948 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:19,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 17:38:20,149 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 17:38:20,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:20,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-12 17:38:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:20,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814776285] [2024-10-12 17:38:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:21,007 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 17:38:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814776285] [2024-10-12 17:38:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814776285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468561522] [2024-10-12 17:38:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:21,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:21,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:21,010 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 17:38:21,011 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 17:38:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:21,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:38:21,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:22,008 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 17:38:22,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:22,019 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 17:38:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468561522] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:22,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:22,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 17:38:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937323728] [2024-10-12 17:38:22,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:22,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:38:22,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:38:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:38:22,021 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:22,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:22,216 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-12 17:38:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:38:22,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-12 17:38:22,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:22,217 INFO L225 Difference]: With dead ends: 54 [2024-10-12 17:38:22,218 INFO L226 Difference]: Without dead ends: 50 [2024-10-12 17:38:22,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:38:22,219 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:22,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-12 17:38:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-12 17:38:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-12 17:38:22,223 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-12 17:38:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:22,224 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-12 17:38:22,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-12 17:38:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-12 17:38:22,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:22,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:22,254 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 17:38:22,425 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 17:38:22,426 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:22,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-12 17:38:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158956813] [2024-10-12 17:38:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:23,201 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 17:38:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158956813] [2024-10-12 17:38:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158956813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260661952] [2024-10-12 17:38:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:23,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:23,204 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 17:38:23,206 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 17:38:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:24,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 17:38:24,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 17:38:24,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:24,203 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 17:38:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260661952] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:38:24,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:38:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-12 17:38:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052081720] [2024-10-12 17:38:24,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:38:24,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 17:38:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 17:38:24,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-12 17:38:24,205 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:24,471 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-10-12 17:38:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 17:38:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-12 17:38:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:24,472 INFO L225 Difference]: With dead ends: 95 [2024-10-12 17:38:24,472 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 17:38:24,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-12 17:38:24,473 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:24,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 17:38:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-12 17:38:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-12 17:38:24,479 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 43 [2024-10-12 17:38:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:24,479 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-12 17:38:24,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-12 17:38:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 17:38:24,480 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:24,480 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:24,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 17:38:24,680 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 17:38:24,681 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:24,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash 528894503, now seen corresponding path program 2 times [2024-10-12 17:38:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259125550] [2024-10-12 17:38:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 17:38:25,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259125550] [2024-10-12 17:38:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259125550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766279934] [2024-10-12 17:38:25,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 17:38:25,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:25,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:25,385 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 17:38:25,386 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 17:38:26,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 17:38:26,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:38:26,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 5358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 17:38:26,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 17:38:26,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 17:38:26,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766279934] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:26,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-12 17:38:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536106946] [2024-10-12 17:38:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:26,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:38:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:38:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 17:38:26,373 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:26,555 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-10-12 17:38:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:38:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-12 17:38:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:26,556 INFO L225 Difference]: With dead ends: 70 [2024-10-12 17:38:26,556 INFO L226 Difference]: Without dead ends: 61 [2024-10-12 17:38:26,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 17:38:26,557 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:26,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-12 17:38:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-12 17:38:26,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:26,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-12 17:38:26,562 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 53 [2024-10-12 17:38:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:26,563 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-12 17:38:26,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-12 17:38:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 17:38:26,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:26,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:26,599 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 17:38:26,764 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 17:38:26,765 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:26,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 1 times [2024-10-12 17:38:26,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:26,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494191372] [2024-10-12 17:38:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:26,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 17:38:27,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:27,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494191372] [2024-10-12 17:38:27,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494191372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:27,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122502659] [2024-10-12 17:38:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:27,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:27,548 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 17:38:27,549 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 17:38:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:28,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:38:28,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 17:38:28,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-12 17:38:28,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122502659] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:38:28,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:38:28,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-12 17:38:28,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551856663] [2024-10-12 17:38:28,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:38:28,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 17:38:28,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 17:38:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-12 17:38:28,578 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:28,851 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-12 17:38:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 17:38:28,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 17:38:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:28,852 INFO L225 Difference]: With dead ends: 116 [2024-10-12 17:38:28,852 INFO L226 Difference]: Without dead ends: 71 [2024-10-12 17:38:28,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-12 17:38:28,853 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:28,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 192 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:38:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-12 17:38:28,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-12 17:38:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 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 17:38:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-12 17:38:28,862 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-12 17:38:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:28,862 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-12 17:38:28,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-12 17:38:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-12 17:38:28,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:28,864 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:28,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 17:38:29,064 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 17:38:29,065 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:29,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 2 times [2024-10-12 17:38:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:29,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856318959] [2024-10-12 17:38:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:29,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 17:38:29,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:29,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856318959] [2024-10-12 17:38:29,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856318959] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511906201] [2024-10-12 17:38:29,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 17:38:29,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:29,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:29,960 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 17:38:29,961 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 17:38:31,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 17:38:31,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:38:31,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 5437 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 17:38:31,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 17:38:31,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 17:38:31,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511906201] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:38:31,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:38:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-12 17:38:31,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750256242] [2024-10-12 17:38:31,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:38:31,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 17:38:31,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 17:38:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-12 17:38:31,147 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:31,596 INFO L93 Difference]: Finished difference Result 126 states and 167 transitions. [2024-10-12 17:38:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 17:38:31,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-12 17:38:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:31,597 INFO L225 Difference]: With dead ends: 126 [2024-10-12 17:38:31,597 INFO L226 Difference]: Without dead ends: 72 [2024-10-12 17:38:31,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-12 17:38:31,598 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:31,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 17:38:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-12 17:38:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-12 17:38:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2024-10-12 17:38:31,604 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 66 [2024-10-12 17:38:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:31,604 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2024-10-12 17:38:31,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2024-10-12 17:38:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 17:38:31,605 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:31,605 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:31,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 17:38:31,806 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 17:38:31,806 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:31,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash -789509461, now seen corresponding path program 3 times [2024-10-12 17:38:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:31,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063811905] [2024-10-12 17:38:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:31,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 17:38:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:32,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063811905] [2024-10-12 17:38:32,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063811905] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:32,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290420234] [2024-10-12 17:38:32,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 17:38:32,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:32,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:32,727 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 17:38:32,728 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 17:38:33,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 17:38:33,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:38:33,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-12 17:38:33,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 17:38:33,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-12 17:38:34,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290420234] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:34,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:34,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 14 [2024-10-12 17:38:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831612440] [2024-10-12 17:38:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:34,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:38:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:34,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:38:34,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-12 17:38:34,005 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:34,175 INFO L93 Difference]: Finished difference Result 104 states and 137 transitions. [2024-10-12 17:38:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:38:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-12 17:38:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:34,176 INFO L225 Difference]: With dead ends: 104 [2024-10-12 17:38:34,177 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 17:38:34,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-12 17:38:34,178 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:34,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 17:38:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-12 17:38:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2024-10-12 17:38:34,184 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 67 [2024-10-12 17:38:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:34,184 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2024-10-12 17:38:34,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2024-10-12 17:38:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-12 17:38:34,185 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:34,186 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:34,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 17:38:34,386 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 17:38:34,386 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:34,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:34,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1264911644, now seen corresponding path program 1 times [2024-10-12 17:38:34,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:34,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724336914] [2024-10-12 17:38:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:34,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-12 17:38:35,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:35,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724336914] [2024-10-12 17:38:35,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724336914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:35,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373718311] [2024-10-12 17:38:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:35,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:35,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:35,364 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 17:38:35,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 17:38:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:36,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 5462 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:38:36,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-12 17:38:36,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 17:38:36,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373718311] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:38:36,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 17:38:36,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 17:38:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651742766] [2024-10-12 17:38:36,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:36,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:38:36,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:38:36,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-12 17:38:36,505 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:36,680 INFO L93 Difference]: Finished difference Result 129 states and 171 transitions. [2024-10-12 17:38:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:38:36,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-12 17:38:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:36,681 INFO L225 Difference]: With dead ends: 129 [2024-10-12 17:38:36,682 INFO L226 Difference]: Without dead ends: 76 [2024-10-12 17:38:36,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-12 17:38:36,683 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:36,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:36,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-12 17:38:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-10-12 17:38:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 73 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2024-10-12 17:38:36,688 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 70 [2024-10-12 17:38:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:36,688 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2024-10-12 17:38:36,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2024-10-12 17:38:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 17:38:36,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:36,693 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:36,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 17:38:36,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 17:38:36,894 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:36,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:36,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1148367932, now seen corresponding path program 1 times [2024-10-12 17:38:36,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:36,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339424799] [2024-10-12 17:38:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:36,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-12 17:38:37,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:37,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339424799] [2024-10-12 17:38:37,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339424799] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:37,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013934569] [2024-10-12 17:38:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:37,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:37,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:37,886 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:37,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 17:38:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:38,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:38:38,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-12 17:38:39,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-12 17:38:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013934569] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:39,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:39,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-12 17:38:39,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787258251] [2024-10-12 17:38:39,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:39,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:38:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:38:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 17:38:39,061 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:39,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:39,243 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2024-10-12 17:38:39,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:38:39,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-12 17:38:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:39,244 INFO L225 Difference]: With dead ends: 107 [2024-10-12 17:38:39,244 INFO L226 Difference]: Without dead ends: 75 [2024-10-12 17:38:39,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 17:38:39,244 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:39,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-12 17:38:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-12 17:38:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 17:38:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-10-12 17:38:39,250 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 73 [2024-10-12 17:38:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:39,250 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-10-12 17:38:39,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-10-12 17:38:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 17:38:39,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:39,251 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:39,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 17:38:39,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 17:38:39,451 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:39,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:39,452 INFO L85 PathProgramCache]: Analyzing trace with hash -856805777, now seen corresponding path program 1 times [2024-10-12 17:38:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:39,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189340952] [2024-10-12 17:38:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:39,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-12 17:38:40,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189340952] [2024-10-12 17:38:40,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189340952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96270505] [2024-10-12 17:38:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:40,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:40,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:40,203 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:40,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 17:38:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:41,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 5479 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:38:41,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-12 17:38:41,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-12 17:38:41,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96270505] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:41,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:41,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-12 17:38:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196578791] [2024-10-12 17:38:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:41,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:38:41,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:38:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 17:38:41,371 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:41,566 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2024-10-12 17:38:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:38:41,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-12 17:38:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:41,568 INFO L225 Difference]: With dead ends: 86 [2024-10-12 17:38:41,568 INFO L226 Difference]: Without dead ends: 76 [2024-10-12 17:38:41,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-12 17:38:41,569 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:41,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-12 17:38:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-12 17:38:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 75 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 17:38:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2024-10-12 17:38:41,582 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 74 [2024-10-12 17:38:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:41,582 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2024-10-12 17:38:41,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:41,582 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2024-10-12 17:38:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 17:38:41,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:41,583 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:41,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 17:38:41,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 17:38:41,784 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:41,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 859271824, now seen corresponding path program 1 times [2024-10-12 17:38:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:41,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300046488] [2024-10-12 17:38:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 17:38:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:42,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300046488] [2024-10-12 17:38:42,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300046488] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:42,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265105070] [2024-10-12 17:38:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:42,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:42,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:42,603 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:42,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 17:38:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:43,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 5482 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 17:38:43,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-12 17:38:43,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-12 17:38:43,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265105070] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:43,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:38:43,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 9] total 16 [2024-10-12 17:38:43,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885094771] [2024-10-12 17:38:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:38:43,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:38:43,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:38:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-12 17:38:43,725 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 17:38:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:43,916 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2024-10-12 17:38:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:38:43,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 75 [2024-10-12 17:38:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:43,917 INFO L225 Difference]: With dead ends: 133 [2024-10-12 17:38:43,917 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 17:38:43,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-12 17:38:43,918 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:43,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:38:43,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 17:38:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-12 17:38:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 76 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 17:38:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2024-10-12 17:38:43,922 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 75 [2024-10-12 17:38:43,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:43,922 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2024-10-12 17:38:43,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 17:38:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2024-10-12 17:38:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 17:38:43,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:43,923 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:43,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 17:38:44,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:44,123 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:44,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:44,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1958375657, now seen corresponding path program 1 times [2024-10-12 17:38:44,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:44,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335774443] [2024-10-12 17:38:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:44,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-12 17:38:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335774443] [2024-10-12 17:38:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335774443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527330113] [2024-10-12 17:38:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:44,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:44,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:44,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:44,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 17:38:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:45,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 5485 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 17:38:45,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-12 17:38:45,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-12 17:38:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527330113] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:38:46,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:38:46,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-12 17:38:46,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632616881] [2024-10-12 17:38:46,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:38:46,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 17:38:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:46,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 17:38:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-12 17:38:46,029 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:46,531 INFO L93 Difference]: Finished difference Result 153 states and 206 transitions. [2024-10-12 17:38:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 17:38:46,532 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-12 17:38:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:46,532 INFO L225 Difference]: With dead ends: 153 [2024-10-12 17:38:46,532 INFO L226 Difference]: Without dead ends: 96 [2024-10-12 17:38:46,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-10-12 17:38:46,534 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 51 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:46,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 432 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 17:38:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-12 17:38:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-10-12 17:38:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.305263157894737) internal successors, (124), 95 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2024-10-12 17:38:46,543 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 76 [2024-10-12 17:38:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:46,544 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2024-10-12 17:38:46,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2024-10-12 17:38:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 17:38:46,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:46,545 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:46,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 17:38:46,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 17:38:46,746 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:46,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1692038032, now seen corresponding path program 2 times [2024-10-12 17:38:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:46,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765693990] [2024-10-12 17:38:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-12 17:38:48,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765693990] [2024-10-12 17:38:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765693990] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705764149] [2024-10-12 17:38:48,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 17:38:48,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:48,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:48,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:48,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 17:38:49,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 17:38:49,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:38:49,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 5596 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-12 17:38:49,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-10-12 17:38:49,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-10-12 17:38:49,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705764149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:38:49,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:38:49,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 6] total 26 [2024-10-12 17:38:49,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838000942] [2024-10-12 17:38:49,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:38:49,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 17:38:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 17:38:49,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-10-12 17:38:49,521 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:50,352 INFO L93 Difference]: Finished difference Result 182 states and 240 transitions. [2024-10-12 17:38:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 17:38:50,353 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-12 17:38:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:50,354 INFO L225 Difference]: With dead ends: 182 [2024-10-12 17:38:50,354 INFO L226 Difference]: Without dead ends: 103 [2024-10-12 17:38:50,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-10-12 17:38:50,355 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 30 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:50,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 889 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 17:38:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-12 17:38:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-12 17:38:50,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.29) internal successors, (129), 100 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 17:38:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 129 transitions. [2024-10-12 17:38:50,361 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 129 transitions. Word has length 95 [2024-10-12 17:38:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:50,361 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 129 transitions. [2024-10-12 17:38:50,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:50,362 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 129 transitions. [2024-10-12 17:38:50,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-12 17:38:50,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:50,363 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2024-10-12 17:38:50,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 17:38:50,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:50,567 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:50,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1832176982, now seen corresponding path program 3 times [2024-10-12 17:38:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:50,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932038609] [2024-10-12 17:38:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:50,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-12 17:38:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:51,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932038609] [2024-10-12 17:38:51,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932038609] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:51,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909139244] [2024-10-12 17:38:51,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 17:38:51,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:51,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:51,805 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:51,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 17:38:53,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 17:38:53,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:38:53,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 17:38:53,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-10-12 17:38:53,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-10-12 17:38:53,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909139244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:38:53,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:38:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 5] total 24 [2024-10-12 17:38:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445680114] [2024-10-12 17:38:53,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:38:53,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 17:38:53,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 17:38:53,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-10-12 17:38:53,272 INFO L87 Difference]: Start difference. First operand 101 states and 129 transitions. Second operand has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:54,087 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2024-10-12 17:38:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 17:38:54,088 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-10-12 17:38:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:54,089 INFO L225 Difference]: With dead ends: 149 [2024-10-12 17:38:54,089 INFO L226 Difference]: Without dead ends: 113 [2024-10-12 17:38:54,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-10-12 17:38:54,090 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 37 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:54,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 776 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 17:38:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-12 17:38:54,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2024-10-12 17:38:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 107 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 17:38:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2024-10-12 17:38:54,097 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 100 [2024-10-12 17:38:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:54,097 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2024-10-12 17:38:54,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2024-10-12 17:38:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-12 17:38:54,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:54,099 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:54,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 17:38:54,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:54,300 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:54,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1725134109, now seen corresponding path program 4 times [2024-10-12 17:38:54,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:54,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808057702] [2024-10-12 17:38:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:54,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-12 17:38:55,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:55,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808057702] [2024-10-12 17:38:55,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808057702] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:55,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467813339] [2024-10-12 17:38:55,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 17:38:55,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:55,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:55,578 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:55,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 17:38:56,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 17:38:56,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:38:56,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 5655 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 17:38:56,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:38:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-10-12 17:38:56,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:38:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-10-12 17:38:56,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467813339] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:38:56,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:38:56,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 7] total 25 [2024-10-12 17:38:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746027125] [2024-10-12 17:38:56,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:38:56,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 17:38:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:38:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 17:38:56,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-10-12 17:38:56,896 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:38:57,707 INFO L93 Difference]: Finished difference Result 171 states and 227 transitions. [2024-10-12 17:38:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 17:38:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-12 17:38:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:38:57,708 INFO L225 Difference]: With dead ends: 171 [2024-10-12 17:38:57,708 INFO L226 Difference]: Without dead ends: 131 [2024-10-12 17:38:57,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-10-12 17:38:57,709 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 80 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 17:38:57,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 712 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 17:38:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-12 17:38:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-10-12 17:38:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.296875) internal successors, (166), 128 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 17:38:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 166 transitions. [2024-10-12 17:38:57,714 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 166 transitions. Word has length 107 [2024-10-12 17:38:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:38:57,714 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 166 transitions. [2024-10-12 17:38:57,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:38:57,714 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 166 transitions. [2024-10-12 17:38:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-12 17:38:57,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:38:57,715 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:38:57,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 17:38:57,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:57,916 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:38:57,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:38:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1699796841, now seen corresponding path program 5 times [2024-10-12 17:38:57,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:38:57,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638447239] [2024-10-12 17:38:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:38:57,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:38:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:38:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-12 17:38:59,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:38:59,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638447239] [2024-10-12 17:38:59,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638447239] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:38:59,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595503625] [2024-10-12 17:38:59,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 17:38:59,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:38:59,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:38:59,262 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 17:38:59,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process