./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_fib-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/seq-pthread/cs_fib-1.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 da5783328d73eba8f05689c8b63c9b7f7c1c1eeab4600bb7173d3ddf64fb59e0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:02:35,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:02:35,999 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:02:36,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:02:36,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:02:36,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:02:36,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:02:36,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:02:36,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:02:36,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:02:36,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:02:36,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:02:36,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:02:36,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:02:36,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:02:36,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:02:36,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:02:36,056 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:02:36,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:02:36,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:02:36,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:02:36,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:02:36,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:02:36,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:02:36,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:02:36,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:02:36,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:02:36,060 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:02:36,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:02:36,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:02:36,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:02:36,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:02:36,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:02:36,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:02:36,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:02:36,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:02:36,064 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:02:36,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:02:36,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:02:36,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:02:36,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:02:36,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:02:36,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da5783328d73eba8f05689c8b63c9b7f7c1c1eeab4600bb7173d3ddf64fb59e0 [2024-11-22 03:02:36,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:02:36,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:02:36,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:02:36,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:02:36,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:02:36,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_fib-1.i [2024-11-22 03:02:37,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:02:38,100 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:02:38,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib-1.i [2024-11-22 03:02:38,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9efeb38/b57e4bef06724c2c9796e4f0351a8829/FLAG4844fceb6 [2024-11-22 03:02:38,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9efeb38/b57e4bef06724c2c9796e4f0351a8829 [2024-11-22 03:02:38,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:02:38,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:02:38,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:02:38,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:02:38,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:02:38,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:38,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ceffc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38, skipping insertion in model container [2024-11-22 03:02:38,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:38,206 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:02:38,540 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib-1.i[23602,23615] [2024-11-22 03:02:38,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:02:38,782 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:02:38,814 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib-1.i[23602,23615] [2024-11-22 03:02:38,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:02:38,932 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:02:38,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38 WrapperNode [2024-11-22 03:02:38,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:02:38,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:02:38,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:02:38,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:02:38,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:38,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,018 INFO L138 Inliner]: procedures = 145, calls = 415, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 716 [2024-11-22 03:02:39,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:02:39,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:02:39,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:02:39,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:02:39,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,115 INFO L175 MemorySlicer]: Split 269 memory accesses to 15 slices as follows [2, 8, 4, 8, 8, 53, 48, 22, 22, 10, 11, 31, 0, 31, 11]. 20 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 3, 2, 3, 3, 18, 18, 6, 6, 6, 0, 0, 0, 0, 0]. The 63 writes are split as follows [0, 2, 2, 2, 2, 20, 15, 7, 7, 2, 1, 1, 0, 1, 1]. [2024-11-22 03:02:39,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:02:39,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:02:39,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:02:39,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:02:39,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (1/1) ... [2024-11-22 03:02:39,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:02:39,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:02:39,250 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) [2024-11-22 03:02:39,257 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 [2024-11-22 03:02:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 03:02:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-22 03:02:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-22 03:02:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 03:02:39,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-22 03:02:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-22 03:02:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-22 03:02:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-22 03:02:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-22 03:02:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-22 03:02:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-22 03:02:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-22 03:02:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-22 03:02:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-22 03:02:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-22 03:02:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-22 03:02:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 03:02:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-22 03:02:39,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-22 03:02:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 03:02:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 03:02:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 03:02:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 03:02:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-22 03:02:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-22 03:02:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-22 03:02:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-22 03:02:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-22 03:02:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-22 03:02:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-22 03:02:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-22 03:02:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-22 03:02:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-22 03:02:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-22 03:02:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:02:39,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:02:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 03:02:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 03:02:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 03:02:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 03:02:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-22 03:02:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-22 03:02:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-22 03:02:39,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 03:02:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 03:02:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 03:02:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 03:02:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 03:02:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 03:02:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:02:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:02:39,620 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:02:39,622 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:02:39,971 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-22 03:02:39,972 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-22 03:02:39,972 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-22 03:02:39,972 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-22 03:02:39,972 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: SUMMARY for call __CS_cs(); srcloc: null [2024-11-22 03:02:39,972 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-22 03:02:39,972 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-22 03:02:44,586 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-22 03:02:44,587 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:02:44,610 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:02:44,611 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 03:02:44,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:02:44 BoogieIcfgContainer [2024-11-22 03:02:44,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:02:44,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:02:44,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:02:44,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:02:44,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:02:38" (1/3) ... [2024-11-22 03:02:44,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a37ecce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:02:44, skipping insertion in model container [2024-11-22 03:02:44,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:02:38" (2/3) ... [2024-11-22 03:02:44,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a37ecce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:02:44, skipping insertion in model container [2024-11-22 03:02:44,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:02:44" (3/3) ... [2024-11-22 03:02:44,623 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib-1.i [2024-11-22 03:02:44,642 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:02:44,643 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 03:02:44,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:02:44,737 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;@55ae45b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:02:44,737 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 03:02:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 105 states have (on average 1.3523809523809525) internal successors, (142), 106 states have internal predecessors, (142), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-22 03:02:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-22 03:02:44,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:44,775 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:44,776 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:44,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1344628329, now seen corresponding path program 1 times [2024-11-22 03:02:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:44,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974201862] [2024-11-22 03:02:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:44,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 03:02:45,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:45,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974201862] [2024-11-22 03:02:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974201862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:45,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:02:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376581850] [2024-11-22 03:02:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:45,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:02:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:02:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:02:45,991 INFO L87 Difference]: Start difference. First operand has 170 states, 105 states have (on average 1.3523809523809525) internal successors, (142), 106 states have internal predecessors, (142), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:46,095 INFO L93 Difference]: Finished difference Result 342 states and 583 transitions. [2024-11-22 03:02:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:02:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 252 [2024-11-22 03:02:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:46,110 INFO L225 Difference]: With dead ends: 342 [2024-11-22 03:02:46,110 INFO L226 Difference]: Without dead ends: 170 [2024-11-22 03:02:46,116 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 [2024-11-22 03:02:46,119 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 4 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:46,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 499 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-22 03:02:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2024-11-22 03:02:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 103 states have internal predecessors, (133), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-22 03:02:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 251 transitions. [2024-11-22 03:02:46,183 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 251 transitions. Word has length 252 [2024-11-22 03:02:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:46,183 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 251 transitions. [2024-11-22 03:02:46,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 251 transitions. [2024-11-22 03:02:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-22 03:02:46,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:46,191 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:46,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 03:02:46,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:46,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash 561977643, now seen corresponding path program 1 times [2024-11-22 03:02:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528519726] [2024-11-22 03:02:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 03:02:46,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:46,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528519726] [2024-11-22 03:02:46,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528519726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:46,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:46,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:02:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421929407] [2024-11-22 03:02:46,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:46,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:02:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:02:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:02:46,813 INFO L87 Difference]: Start difference. First operand 167 states and 251 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:46,876 INFO L93 Difference]: Finished difference Result 333 states and 502 transitions. [2024-11-22 03:02:46,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:02:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 255 [2024-11-22 03:02:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:46,885 INFO L225 Difference]: With dead ends: 333 [2024-11-22 03:02:46,885 INFO L226 Difference]: Without dead ends: 169 [2024-11-22 03:02:46,887 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 [2024-11-22 03:02:46,889 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 1 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:46,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 493 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-22 03:02:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2024-11-22 03:02:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 104 states have internal predecessors, (134), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-22 03:02:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 252 transitions. [2024-11-22 03:02:46,922 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 252 transitions. Word has length 255 [2024-11-22 03:02:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:46,922 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 252 transitions. [2024-11-22 03:02:46,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 252 transitions. [2024-11-22 03:02:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-22 03:02:46,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:46,930 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:46,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 03:02:46,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:46,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash -136058963, now seen corresponding path program 1 times [2024-11-22 03:02:46,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:46,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292636242] [2024-11-22 03:02:46,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:46,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 03:02:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292636242] [2024-11-22 03:02:47,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292636242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:02:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69037263] [2024-11-22 03:02:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:47,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:02:47,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:02:47,464 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) [2024-11-22 03:02:47,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:02:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:48,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:02:48,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:02:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 03:02:48,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:02:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 03:02:48,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69037263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:02:48,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:02:48,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-22 03:02:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745109119] [2024-11-22 03:02:48,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:02:48,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:02:48,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:02:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:02:48,651 INFO L87 Difference]: Start difference. First operand 168 states and 252 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-22 03:02:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:48,737 INFO L93 Difference]: Finished difference Result 337 states and 507 transitions. [2024-11-22 03:02:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 03:02:48,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 257 [2024-11-22 03:02:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:48,742 INFO L225 Difference]: With dead ends: 337 [2024-11-22 03:02:48,742 INFO L226 Difference]: Without dead ends: 172 [2024-11-22 03:02:48,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 511 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:02:48,746 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 1 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:48,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 983 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-22 03:02:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-22 03:02:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 108 states have internal predecessors, (138), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-22 03:02:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 256 transitions. [2024-11-22 03:02:48,769 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 256 transitions. Word has length 257 [2024-11-22 03:02:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:48,770 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 256 transitions. [2024-11-22 03:02:48,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-22 03:02:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 256 transitions. [2024-11-22 03:02:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 03:02:48,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:48,777 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:48,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 03:02:48,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:02:48,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:48,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 717544241, now seen corresponding path program 2 times [2024-11-22 03:02:48,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:48,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883233354] [2024-11-22 03:02:48,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:02:48,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:49,286 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:02:49,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:02:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3130 trivial. 0 not checked. [2024-11-22 03:02:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883233354] [2024-11-22 03:02:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883233354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:49,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:49,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:02:49,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631659529] [2024-11-22 03:02:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:49,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:02:49,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:02:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:02:49,556 INFO L87 Difference]: Start difference. First operand 172 states and 256 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:49,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:49,622 INFO L93 Difference]: Finished difference Result 329 states and 496 transitions. [2024-11-22 03:02:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:02:49,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 03:02:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:49,628 INFO L225 Difference]: With dead ends: 329 [2024-11-22 03:02:49,631 INFO L226 Difference]: Without dead ends: 243 [2024-11-22 03:02:49,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:02:49,634 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 153 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:49,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 733 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:02:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-22 03:02:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2024-11-22 03:02:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 156 states have (on average 1.3525641025641026) internal successors, (211), 156 states have internal predecessors, (211), 77 states have call successors, (77), 8 states have call predecessors, (77), 8 states have return successors, (79), 77 states have call predecessors, (79), 77 states have call successors, (79) [2024-11-22 03:02:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 367 transitions. [2024-11-22 03:02:49,666 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 367 transitions. Word has length 261 [2024-11-22 03:02:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:49,666 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 367 transitions. [2024-11-22 03:02:49,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 03:02:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 367 transitions. [2024-11-22 03:02:49,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-22 03:02:49,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:49,672 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:49,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 03:02:49,672 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:49,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash 88428673, now seen corresponding path program 1 times [2024-11-22 03:02:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:49,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049999390] [2024-11-22 03:02:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3827 trivial. 0 not checked. [2024-11-22 03:02:50,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:50,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049999390] [2024-11-22 03:02:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049999390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:02:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052981222] [2024-11-22 03:02:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:02:50,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:02:50,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:02:50,288 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) [2024-11-22 03:02:50,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:02:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:02:51,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:02:51,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:02:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3827 trivial. 0 not checked. [2024-11-22 03:02:51,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:02:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3827 trivial. 0 not checked. [2024-11-22 03:02:51,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052981222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:02:51,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:02:51,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 03:02:51,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881238583] [2024-11-22 03:02:51,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:02:51,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 03:02:51,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 03:02:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 03:02:51,685 INFO L87 Difference]: Start difference. First operand 242 states and 367 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2024-11-22 03:02:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:02:51,768 INFO L93 Difference]: Finished difference Result 499 states and 753 transitions. [2024-11-22 03:02:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 03:02:51,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 329 [2024-11-22 03:02:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:02:51,771 INFO L225 Difference]: With dead ends: 499 [2024-11-22 03:02:51,771 INFO L226 Difference]: Without dead ends: 269 [2024-11-22 03:02:51,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 03:02:51,776 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 8 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:02:51,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 741 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 03:02:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-22 03:02:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-22 03:02:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 183 states have (on average 1.3169398907103824) internal successors, (241), 183 states have internal predecessors, (241), 77 states have call successors, (77), 8 states have call predecessors, (77), 8 states have return successors, (79), 77 states have call predecessors, (79), 77 states have call successors, (79) [2024-11-22 03:02:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 397 transitions. [2024-11-22 03:02:51,807 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 397 transitions. Word has length 329 [2024-11-22 03:02:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:02:51,807 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 397 transitions. [2024-11-22 03:02:51,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2024-11-22 03:02:51,807 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 397 transitions. [2024-11-22 03:02:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-22 03:02:51,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:02:51,815 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:02:51,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 03:02:52,015 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 [2024-11-22 03:02:52,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:02:52,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:02:52,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1225374185, now seen corresponding path program 2 times [2024-11-22 03:02:52,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:02:52,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843786736] [2024-11-22 03:02:52,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:02:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:02:52,327 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:02:52,327 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:02:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4020 trivial. 0 not checked. [2024-11-22 03:02:52,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:02:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843786736] [2024-11-22 03:02:52,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843786736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:02:52,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:02:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 03:02:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913616824] [2024-11-22 03:02:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:02:52,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 03:02:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:02:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 03:02:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:02:52,681 INFO L87 Difference]: Start difference. First operand 269 states and 397 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-22 03:02:56,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:00,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:04,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:05,026 INFO L93 Difference]: Finished difference Result 598 states and 899 transitions. [2024-11-22 03:03:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 03:03:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) Word has length 356 [2024-11-22 03:03:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:05,034 INFO L225 Difference]: With dead ends: 598 [2024-11-22 03:03:05,034 INFO L226 Difference]: Without dead ends: 503 [2024-11-22 03:03:05,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 03:03:05,039 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 239 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:05,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1347 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-22 03:03:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-22 03:03:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 496. [2024-11-22 03:03:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 324 states have (on average 1.3333333333333333) internal successors, (432), 327 states have internal predecessors, (432), 152 states have call successors, (152), 16 states have call predecessors, (152), 19 states have return successors, (167), 152 states have call predecessors, (167), 152 states have call successors, (167) [2024-11-22 03:03:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 751 transitions. [2024-11-22 03:03:05,101 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 751 transitions. Word has length 356 [2024-11-22 03:03:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:05,101 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 751 transitions. [2024-11-22 03:03:05,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-22 03:03:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 751 transitions. [2024-11-22 03:03:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-22 03:03:05,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:05,108 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:05,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 03:03:05,108 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:05,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1612449353, now seen corresponding path program 1 times [2024-11-22 03:03:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:05,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235998717] [2024-11-22 03:03:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:05,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4020 trivial. 0 not checked. [2024-11-22 03:03:06,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235998717] [2024-11-22 03:03:06,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235998717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:03:06,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:03:06,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 03:03:06,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897119854] [2024-11-22 03:03:06,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:03:06,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 03:03:06,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 03:03:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:03:06,553 INFO L87 Difference]: Start difference. First operand 496 states and 751 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-22 03:03:10,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:14,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:18,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:18,967 INFO L93 Difference]: Finished difference Result 877 states and 1322 transitions. [2024-11-22 03:03:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 03:03:18,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) Word has length 356 [2024-11-22 03:03:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:18,974 INFO L225 Difference]: With dead ends: 877 [2024-11-22 03:03:18,974 INFO L226 Difference]: Without dead ends: 444 [2024-11-22 03:03:18,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 03:03:18,977 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 241 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:18,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1370 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-22 03:03:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-22 03:03:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 440. [2024-11-22 03:03:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 287 states have (on average 1.2682926829268293) internal successors, (364), 289 states have internal predecessors, (364), 135 states have call successors, (135), 15 states have call predecessors, (135), 17 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2024-11-22 03:03:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 642 transitions. [2024-11-22 03:03:19,029 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 642 transitions. Word has length 356 [2024-11-22 03:03:19,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:19,031 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 642 transitions. [2024-11-22 03:03:19,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-22 03:03:19,031 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 642 transitions. [2024-11-22 03:03:19,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-22 03:03:19,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:19,037 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:19,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 03:03:19,037 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:19,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1282593449, now seen corresponding path program 1 times [2024-11-22 03:03:19,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:19,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674744250] [2024-11-22 03:03:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:19,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4020 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 3854 trivial. 0 not checked. [2024-11-22 03:03:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674744250] [2024-11-22 03:03:19,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674744250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153331228] [2024-11-22 03:03:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:19,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:19,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:19,907 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) [2024-11-22 03:03:19,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:03:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:20,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 03:03:20,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4020 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 3854 trivial. 0 not checked. [2024-11-22 03:03:21,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:03:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4020 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 3854 trivial. 0 not checked. [2024-11-22 03:03:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153331228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:03:21,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:03:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-22 03:03:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968140063] [2024-11-22 03:03:21,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:03:21,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 03:03:21,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 03:03:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:03:21,544 INFO L87 Difference]: Start difference. First operand 440 states and 642 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2024-11-22 03:03:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:21,644 INFO L93 Difference]: Finished difference Result 859 states and 1262 transitions. [2024-11-22 03:03:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 03:03:21,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 356 [2024-11-22 03:03:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:21,649 INFO L225 Difference]: With dead ends: 859 [2024-11-22 03:03:21,649 INFO L226 Difference]: Without dead ends: 458 [2024-11-22 03:03:21,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 706 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:03:21,653 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 4 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:21,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 500 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 03:03:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-22 03:03:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2024-11-22 03:03:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 305 states have (on average 1.259016393442623) internal successors, (384), 307 states have internal predecessors, (384), 135 states have call successors, (135), 15 states have call predecessors, (135), 17 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2024-11-22 03:03:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 662 transitions. [2024-11-22 03:03:21,692 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 662 transitions. Word has length 356 [2024-11-22 03:03:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:21,692 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 662 transitions. [2024-11-22 03:03:21,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2024-11-22 03:03:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 662 transitions. [2024-11-22 03:03:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-22 03:03:21,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:21,700 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 18, 18, 6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:21,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 03:03:21,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:21,901 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:21,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:21,902 INFO L85 PathProgramCache]: Analyzing trace with hash -741018473, now seen corresponding path program 2 times [2024-11-22 03:03:21,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:21,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734640089] [2024-11-22 03:03:21,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:03:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:22,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 03:03:22,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:03:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4283 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4279 trivial. 0 not checked. [2024-11-22 03:03:22,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734640089] [2024-11-22 03:03:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734640089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221169491] [2024-11-22 03:03:22,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:03:22,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:22,973 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) [2024-11-22 03:03:22,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 03:03:51,629 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 03:03:51,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:03:51,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 03:03:51,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4283 backedges. 640 proven. 4 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2024-11-22 03:03:51,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:03:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4283 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4279 trivial. 0 not checked. [2024-11-22 03:03:52,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221169491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:03:52,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:03:52,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-22 03:03:52,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743569831] [2024-11-22 03:03:52,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:03:52,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 03:03:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 03:03:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 03:03:52,491 INFO L87 Difference]: Start difference. First operand 458 states and 662 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 9 states have call successors, (96), 5 states have call predecessors, (96), 6 states have return successors, (97), 7 states have call predecessors, (97), 9 states have call successors, (97) [2024-11-22 03:03:56,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:00,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:01,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:01,554 INFO L93 Difference]: Finished difference Result 839 states and 1239 transitions. [2024-11-22 03:04:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 03:04:01,555 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 9 states have call successors, (96), 5 states have call predecessors, (96), 6 states have return successors, (97), 7 states have call predecessors, (97), 9 states have call successors, (97) Word has length 374 [2024-11-22 03:04:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:01,559 INFO L225 Difference]: With dead ends: 839 [2024-11-22 03:04:01,559 INFO L226 Difference]: Without dead ends: 446 [2024-11-22 03:04:01,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-22 03:04:01,564 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 237 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 133 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:04:01,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 909 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 527 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-11-22 03:04:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-22 03:04:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 433. [2024-11-22 03:04:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 301 states have (on average 1.2990033222591362) internal successors, (391), 303 states have internal predecessors, (391), 107 states have call successors, (107), 22 states have call predecessors, (107), 24 states have return successors, (123), 107 states have call predecessors, (123), 107 states have call successors, (123) [2024-11-22 03:04:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 621 transitions. [2024-11-22 03:04:01,593 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 621 transitions. Word has length 374 [2024-11-22 03:04:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:01,594 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 621 transitions. [2024-11-22 03:04:01,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 9 states have call successors, (96), 5 states have call predecessors, (96), 6 states have return successors, (97), 7 states have call predecessors, (97), 9 states have call successors, (97) [2024-11-22 03:04:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 621 transitions. [2024-11-22 03:04:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-22 03:04:01,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:01,598 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 18, 18, 6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:01,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 03:04:01,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:01,799 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:01,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash -822888841, now seen corresponding path program 1 times [2024-11-22 03:04:01,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105000376] [2024-11-22 03:04:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4283 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4279 trivial. 0 not checked. [2024-11-22 03:04:06,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:06,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105000376] [2024-11-22 03:04:06,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105000376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:04:06,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435314515] [2024-11-22 03:04:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:06,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:06,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:04:06,306 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) [2024-11-22 03:04:06,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process