./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 08:55:46,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 08:55:46,351 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-19 08:55:46,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 08:55:46,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 08:55:46,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 08:55:46,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 08:55:46,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 08:55:46,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 08:55:46,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 08:55:46,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 08:55:46,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 08:55:46,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 08:55:46,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 08:55:46,378 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 08:55:46,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 08:55:46,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 08:55:46,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 08:55:46,379 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 08:55:46,380 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 08:55:46,380 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 08:55:46,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 08:55:46,383 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 08:55:46,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 08:55:46,383 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 08:55:46,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 08:55:46,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 08:55:46,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 08:55:46,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 08:55:46,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 08:55:46,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 08:55:46,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 08:55:46,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 08:55:46,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 08:55:46,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 08:55:46,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 08:55:46,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 08:55:46,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 08:55:46,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 08:55:46,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 [2024-11-19 08:55:46,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 08:55:46,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 08:55:46,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 08:55:46,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 08:55:46,619 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 08:55:46,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2024-11-19 08:55:48,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 08:55:48,353 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 08:55:48,353 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2024-11-19 08:55:48,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0b259d97/b886762f65c9497ba82becb3bf96286c/FLAG85271f1e9 [2024-11-19 08:55:48,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0b259d97/b886762f65c9497ba82becb3bf96286c [2024-11-19 08:55:48,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 08:55:48,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 08:55:48,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 08:55:48,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 08:55:48,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 08:55:48,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:55:48" (1/1) ... [2024-11-19 08:55:48,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248cc3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:48, skipping insertion in model container [2024-11-19 08:55:48,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:55:48" (1/1) ... [2024-11-19 08:55:48,719 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 08:55:49,115 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,131 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,134 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,140 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,145 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,156 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,157 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,159 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,164 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,165 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,182 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:49,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 08:55:49,216 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 08:55:49,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 08:55:49,390 INFO L204 MainTranslator]: Completed translation [2024-11-19 08:55:49,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49 WrapperNode [2024-11-19 08:55:49,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 08:55:49,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 08:55:49,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 08:55:49,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 08:55:49,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,472 INFO L138 Inliner]: procedures = 346, calls = 463, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 746 [2024-11-19 08:55:49,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 08:55:49,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 08:55:49,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 08:55:49,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 08:55:49,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,534 INFO L175 MemorySlicer]: Split 412 memory accesses to 14 slices as follows [2, 3, 3, 3, 4, 4, 4, 3, 3, 355, 2, 2, 12, 12]. 86 percent of accesses are in the largest equivalence class. The 379 initializations are split as follows [2, 3, 3, 3, 3, 3, 3, 3, 1, 355, 0, 0, 0, 0]. The 11 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 2, 5, 2]. [2024-11-19 08:55:49,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 08:55:49,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 08:55:49,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 08:55:49,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 08:55:49,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (1/1) ... [2024-11-19 08:55:49,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 08:55:49,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:55:49,694 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) [2024-11-19 08:55:49,700 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 [2024-11-19 08:55:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 08:55:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 08:55:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 08:55:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-19 08:55:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-19 08:55:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-19 08:55:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-19 08:55:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-19 08:55:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-19 08:55:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 08:55:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 08:55:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 08:55:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 08:55:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 08:55:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 08:55:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 08:55:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 08:55:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 08:55:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 08:55:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 08:55:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 08:55:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 08:55:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 08:55:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 08:55:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-19 08:55:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-19 08:55:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-19 08:55:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-19 08:55:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-19 08:55:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-19 08:55:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 08:55:49,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 08:55:50,044 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 08:55:50,046 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 08:55:50,771 INFO L? ?]: Removed 262 outVars from TransFormulas that were not future-live. [2024-11-19 08:55:50,772 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 08:55:50,794 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 08:55:50,797 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-19 08:55:50,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:55:50 BoogieIcfgContainer [2024-11-19 08:55:50,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 08:55:50,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 08:55:50,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 08:55:50,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 08:55:50,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:55:48" (1/3) ... [2024-11-19 08:55:50,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3b081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:55:50, skipping insertion in model container [2024-11-19 08:55:50,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:49" (2/3) ... [2024-11-19 08:55:50,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3b081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:55:50, skipping insertion in model container [2024-11-19 08:55:50,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:55:50" (3/3) ... [2024-11-19 08:55:50,805 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2024-11-19 08:55:50,819 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 08:55:50,820 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 96 error locations. [2024-11-19 08:55:50,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 08:55:50,876 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=None, 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;@61a5a4c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 08:55:50,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-11-19 08:55:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 150 states have (on average 1.9266666666666667) internal successors, (289), 246 states have internal predecessors, (289), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-19 08:55:50,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:50,890 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-19 08:55:50,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:50,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-19 08:55:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:50,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295344531] [2024-11-19 08:55:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:51,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:51,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295344531] [2024-11-19 08:55:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295344531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:51,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:55:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278170410] [2024-11-19 08:55:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:51,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:55:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:55:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:55:51,354 INFO L87 Difference]: Start difference. First operand has 250 states, 150 states have (on average 1.9266666666666667) internal successors, (289), 246 states have internal predecessors, (289), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:51,560 INFO L93 Difference]: Finished difference Result 260 states and 292 transitions. [2024-11-19 08:55:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:55:51,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-19 08:55:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:51,572 INFO L225 Difference]: With dead ends: 260 [2024-11-19 08:55:51,573 INFO L226 Difference]: Without dead ends: 258 [2024-11-19 08:55:51,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:55:51,579 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 242 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:51,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 209 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:55:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-19 08:55:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 241. [2024-11-19 08:55:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 146 states have (on average 1.8356164383561644) internal successors, (268), 237 states have internal predecessors, (268), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2024-11-19 08:55:51,618 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 3 [2024-11-19 08:55:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:51,618 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2024-11-19 08:55:51,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2024-11-19 08:55:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-19 08:55:51,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:51,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-19 08:55:51,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 08:55:51,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:51,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:51,620 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-19 08:55:51,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:51,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83561295] [2024-11-19 08:55:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:51,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:51,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:51,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83561295] [2024-11-19 08:55:51,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83561295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:51,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:51,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:55:51,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377682377] [2024-11-19 08:55:51,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:51,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:55:51,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:51,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:55:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:55:51,898 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:52,064 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2024-11-19 08:55:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:55:52,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-19 08:55:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:52,067 INFO L225 Difference]: With dead ends: 240 [2024-11-19 08:55:52,069 INFO L226 Difference]: Without dead ends: 240 [2024-11-19 08:55:52,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:55:52,070 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:52,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 436 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:55:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-19 08:55:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-19 08:55:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 146 states have (on average 1.8287671232876712) internal successors, (267), 236 states have internal predecessors, (267), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 271 transitions. [2024-11-19 08:55:52,078 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 271 transitions. Word has length 3 [2024-11-19 08:55:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:52,078 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 271 transitions. [2024-11-19 08:55:52,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 271 transitions. [2024-11-19 08:55:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 08:55:52,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:52,079 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 08:55:52,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 08:55:52,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:52,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-19 08:55:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:52,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538320001] [2024-11-19 08:55:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:52,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538320001] [2024-11-19 08:55:52,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538320001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:52,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:52,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 08:55:52,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819091853] [2024-11-19 08:55:52,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:52,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 08:55:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 08:55:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:55:52,413 INFO L87 Difference]: Start difference. First operand 240 states and 271 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:52,564 INFO L93 Difference]: Finished difference Result 243 states and 274 transitions. [2024-11-19 08:55:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 08:55:52,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-19 08:55:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:52,565 INFO L225 Difference]: With dead ends: 243 [2024-11-19 08:55:52,565 INFO L226 Difference]: Without dead ends: 243 [2024-11-19 08:55:52,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:55:52,566 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 12 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:52,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 436 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:55:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-19 08:55:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2024-11-19 08:55:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 148 states have (on average 1.8175675675675675) internal successors, (269), 238 states have internal predecessors, (269), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 273 transitions. [2024-11-19 08:55:52,574 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 273 transitions. Word has length 6 [2024-11-19 08:55:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:52,575 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 273 transitions. [2024-11-19 08:55:52,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 273 transitions. [2024-11-19 08:55:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 08:55:52,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:52,575 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:52,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 08:55:52,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:52,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:52,576 INFO L85 PathProgramCache]: Analyzing trace with hash 71430167, now seen corresponding path program 1 times [2024-11-19 08:55:52,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514380301] [2024-11-19 08:55:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514380301] [2024-11-19 08:55:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514380301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:55:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723590025] [2024-11-19 08:55:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:52,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:55:52,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:55:52,891 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) [2024-11-19 08:55:52,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 08:55:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:53,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 08:55:53,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:55:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:53,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:55:53,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-19 08:55:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723590025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:55:53,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:55:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-19 08:55:53,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826144887] [2024-11-19 08:55:53,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:55:53,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 08:55:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 08:55:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-19 08:55:53,335 INFO L87 Difference]: Start difference. First operand 242 states and 273 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:53,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:53,660 INFO L93 Difference]: Finished difference Result 246 states and 277 transitions. [2024-11-19 08:55:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 08:55:53,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 08:55:53,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:53,662 INFO L225 Difference]: With dead ends: 246 [2024-11-19 08:55:53,662 INFO L226 Difference]: Without dead ends: 246 [2024-11-19 08:55:53,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-19 08:55:53,663 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 516 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:53,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 955 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:55:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-19 08:55:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-19 08:55:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 153 states have (on average 1.7843137254901962) internal successors, (273), 242 states have internal predecessors, (273), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 277 transitions. [2024-11-19 08:55:53,675 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 277 transitions. Word has length 9 [2024-11-19 08:55:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:53,676 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 277 transitions. [2024-11-19 08:55:53,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 277 transitions. [2024-11-19 08:55:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 08:55:53,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:53,676 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:53,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 08:55:53,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:55:53,881 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:53,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash 994856290, now seen corresponding path program 1 times [2024-11-19 08:55:53,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:53,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470506474] [2024-11-19 08:55:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:53,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:54,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:54,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470506474] [2024-11-19 08:55:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470506474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:55:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425006900] [2024-11-19 08:55:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:54,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:55:54,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:55:54,072 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) [2024-11-19 08:55:54,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 08:55:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:54,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 08:55:54,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:55:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:54,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:55:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425006900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:55:54,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:55:54,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-19 08:55:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184162846] [2024-11-19 08:55:54,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:55:54,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 08:55:54,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 08:55:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:55:54,411 INFO L87 Difference]: Start difference. First operand 246 states and 277 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:54,467 INFO L93 Difference]: Finished difference Result 261 states and 292 transitions. [2024-11-19 08:55:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 08:55:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-19 08:55:54,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:54,469 INFO L225 Difference]: With dead ends: 261 [2024-11-19 08:55:54,469 INFO L226 Difference]: Without dead ends: 261 [2024-11-19 08:55:54,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:55:54,471 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 4 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:54,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 793 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:55:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-19 08:55:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-19 08:55:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 168 states have (on average 1.7142857142857142) internal successors, (288), 257 states have internal predecessors, (288), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 292 transitions. [2024-11-19 08:55:54,488 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 292 transitions. Word has length 16 [2024-11-19 08:55:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:54,491 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 292 transitions. [2024-11-19 08:55:54,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 292 transitions. [2024-11-19 08:55:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 08:55:54,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:54,492 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:54,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 08:55:54,692 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 [2024-11-19 08:55:54,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:54,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash -23468336, now seen corresponding path program 2 times [2024-11-19 08:55:54,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:54,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583659680] [2024-11-19 08:55:54,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:55:54,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:54,725 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 08:55:54,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:55:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-19 08:55:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583659680] [2024-11-19 08:55:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583659680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:54,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:55:54,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276904167] [2024-11-19 08:55:54,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:54,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:55:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:55:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:54,925 INFO L87 Difference]: Start difference. First operand 261 states and 292 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:55,045 INFO L93 Difference]: Finished difference Result 277 states and 309 transitions. [2024-11-19 08:55:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:55:55,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-19 08:55:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:55,047 INFO L225 Difference]: With dead ends: 277 [2024-11-19 08:55:55,047 INFO L226 Difference]: Without dead ends: 277 [2024-11-19 08:55:55,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:55,048 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:55,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 242 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:55:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-19 08:55:55,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 260. [2024-11-19 08:55:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 168 states have (on average 1.7083333333333333) internal successors, (287), 256 states have internal predecessors, (287), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2024-11-19 08:55:55,053 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 31 [2024-11-19 08:55:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:55,054 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2024-11-19 08:55:55,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:55,054 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2024-11-19 08:55:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 08:55:55,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:55,055 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:55,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 08:55:55,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:55,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:55,055 INFO L85 PathProgramCache]: Analyzing trace with hash -23468335, now seen corresponding path program 1 times [2024-11-19 08:55:55,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:55,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363376006] [2024-11-19 08:55:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363376006] [2024-11-19 08:55:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363376006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:55:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348737915] [2024-11-19 08:55:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:55,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:55:55,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:55:55,408 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) [2024-11-19 08:55:55,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 08:55:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:55,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 08:55:55,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:55:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:55,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:55:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:55:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348737915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:55:55,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:55:55,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-19 08:55:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279847843] [2024-11-19 08:55:55,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:55:55,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 08:55:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 08:55:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:55:55,784 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:55,833 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2024-11-19 08:55:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:55:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-19 08:55:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:55,838 INFO L225 Difference]: With dead ends: 266 [2024-11-19 08:55:55,838 INFO L226 Difference]: Without dead ends: 266 [2024-11-19 08:55:55,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:55:55,839 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 2 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:55,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1052 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:55:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-19 08:55:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-19 08:55:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 174 states have (on average 1.6839080459770115) internal successors, (293), 262 states have internal predecessors, (293), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2024-11-19 08:55:55,845 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 31 [2024-11-19 08:55:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:55,846 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2024-11-19 08:55:55,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2024-11-19 08:55:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 08:55:55,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:55,846 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:55,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 08:55:56,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:55:56,048 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:56,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1894060655, now seen corresponding path program 2 times [2024-11-19 08:55:56,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:56,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484065497] [2024-11-19 08:55:56,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:55:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:56,086 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 08:55:56,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:55:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484065497] [2024-11-19 08:55:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484065497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 08:55:56,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029647547] [2024-11-19 08:55:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:56,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:55:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:56,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:55:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:55:56,283 INFO L87 Difference]: Start difference. First operand 266 states and 297 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:56,451 INFO L93 Difference]: Finished difference Result 282 states and 314 transitions. [2024-11-19 08:55:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:55:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-19 08:55:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:56,453 INFO L225 Difference]: With dead ends: 282 [2024-11-19 08:55:56,453 INFO L226 Difference]: Without dead ends: 282 [2024-11-19 08:55:56,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:56,454 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 513 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:56,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 154 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:55:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-19 08:55:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 265. [2024-11-19 08:55:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 174 states have (on average 1.6781609195402298) internal successors, (292), 261 states have internal predecessors, (292), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 296 transitions. [2024-11-19 08:55:56,459 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 296 transitions. Word has length 37 [2024-11-19 08:55:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:56,459 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 296 transitions. [2024-11-19 08:55:56,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 08:55:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 296 transitions. [2024-11-19 08:55:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 08:55:56,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:56,460 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:56,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 08:55:56,460 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:56,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:56,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1983337925, now seen corresponding path program 1 times [2024-11-19 08:55:56,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:56,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336119013] [2024-11-19 08:55:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:56,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336119013] [2024-11-19 08:55:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336119013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:56,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:55:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455635894] [2024-11-19 08:55:56,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:56,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:55:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:55:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:55:56,695 INFO L87 Difference]: Start difference. First operand 265 states and 296 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:56,798 INFO L93 Difference]: Finished difference Result 277 states and 309 transitions. [2024-11-19 08:55:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:55:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-19 08:55:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:56,800 INFO L225 Difference]: With dead ends: 277 [2024-11-19 08:55:56,800 INFO L226 Difference]: Without dead ends: 277 [2024-11-19 08:55:56,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:55:56,801 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 221 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:56,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 212 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:55:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-19 08:55:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 260. [2024-11-19 08:55:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 174 states have (on average 1.6494252873563218) internal successors, (287), 256 states have internal predecessors, (287), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2024-11-19 08:55:56,805 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 45 [2024-11-19 08:55:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:56,806 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2024-11-19 08:55:56,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2024-11-19 08:55:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 08:55:56,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:56,807 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:56,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 08:55:56,807 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:56,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1983337924, now seen corresponding path program 1 times [2024-11-19 08:55:56,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:56,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039256746] [2024-11-19 08:55:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:57,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:57,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039256746] [2024-11-19 08:55:57,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039256746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:57,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:57,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 08:55:57,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773389577] [2024-11-19 08:55:57,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:57,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:55:57,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:57,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:55:57,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:57,361 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:57,616 INFO L93 Difference]: Finished difference Result 423 states and 484 transitions. [2024-11-19 08:55:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:55:57,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-19 08:55:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:57,618 INFO L225 Difference]: With dead ends: 423 [2024-11-19 08:55:57,618 INFO L226 Difference]: Without dead ends: 423 [2024-11-19 08:55:57,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:57,618 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 604 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:57,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 754 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:55:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-19 08:55:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 259. [2024-11-19 08:55:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 174 states have (on average 1.6436781609195403) internal successors, (286), 255 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 290 transitions. [2024-11-19 08:55:57,625 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 290 transitions. Word has length 45 [2024-11-19 08:55:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:57,625 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 290 transitions. [2024-11-19 08:55:57,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 290 transitions. [2024-11-19 08:55:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 08:55:57,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:57,628 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:57,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 08:55:57,628 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:57,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash 244978578, now seen corresponding path program 1 times [2024-11-19 08:55:57,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:57,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236061451] [2024-11-19 08:55:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:57,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236061451] [2024-11-19 08:55:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236061451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:57,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:57,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 08:55:57,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892484771] [2024-11-19 08:55:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:57,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:55:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:55:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:57,993 INFO L87 Difference]: Start difference. First operand 259 states and 290 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:58,252 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2024-11-19 08:55:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:55:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-19 08:55:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:58,254 INFO L225 Difference]: With dead ends: 296 [2024-11-19 08:55:58,254 INFO L226 Difference]: Without dead ends: 296 [2024-11-19 08:55:58,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:58,254 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 507 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:58,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 394 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:55:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-19 08:55:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 272. [2024-11-19 08:55:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 188 states have (on average 1.6329787234042554) internal successors, (307), 268 states have internal predecessors, (307), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 311 transitions. [2024-11-19 08:55:58,261 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 311 transitions. Word has length 48 [2024-11-19 08:55:58,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:58,262 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 311 transitions. [2024-11-19 08:55:58,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 311 transitions. [2024-11-19 08:55:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 08:55:58,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:58,264 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:58,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 08:55:58,264 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:58,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash -995599198, now seen corresponding path program 1 times [2024-11-19 08:55:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:58,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857058614] [2024-11-19 08:55:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:58,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857058614] [2024-11-19 08:55:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857058614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:58,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:58,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 08:55:58,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028662079] [2024-11-19 08:55:58,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:58,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 08:55:58,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:58,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 08:55:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:55:58,444 INFO L87 Difference]: Start difference. First operand 272 states and 311 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:58,600 INFO L93 Difference]: Finished difference Result 306 states and 352 transitions. [2024-11-19 08:55:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 08:55:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-19 08:55:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:58,602 INFO L225 Difference]: With dead ends: 306 [2024-11-19 08:55:58,602 INFO L226 Difference]: Without dead ends: 306 [2024-11-19 08:55:58,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:55:58,603 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 375 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:58,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 289 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:55:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-19 08:55:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 265. [2024-11-19 08:55:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 188 states have (on average 1.5957446808510638) internal successors, (300), 261 states have internal predecessors, (300), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 304 transitions. [2024-11-19 08:55:58,608 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 304 transitions. Word has length 49 [2024-11-19 08:55:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:58,608 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 304 transitions. [2024-11-19 08:55:58,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 304 transitions. [2024-11-19 08:55:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 08:55:58,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:58,611 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:58,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 08:55:58,612 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:58,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash -995599197, now seen corresponding path program 1 times [2024-11-19 08:55:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142234573] [2024-11-19 08:55:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:58,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:58,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142234573] [2024-11-19 08:55:58,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142234573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:58,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:58,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 08:55:58,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738258470] [2024-11-19 08:55:58,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:58,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:55:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:55:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:58,918 INFO L87 Difference]: Start difference. First operand 265 states and 304 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:58,984 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2024-11-19 08:55:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:55:58,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-19 08:55:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:58,986 INFO L225 Difference]: With dead ends: 272 [2024-11-19 08:55:58,986 INFO L226 Difference]: Without dead ends: 272 [2024-11-19 08:55:58,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:55:58,986 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 257 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:58,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 934 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:55:58,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-19 08:55:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2024-11-19 08:55:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 261 states have internal predecessors, (299), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 303 transitions. [2024-11-19 08:55:58,990 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 303 transitions. Word has length 49 [2024-11-19 08:55:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:58,991 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 303 transitions. [2024-11-19 08:55:58,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 303 transitions. [2024-11-19 08:55:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 08:55:58,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:58,991 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:58,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 08:55:58,991 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:58,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1007374377, now seen corresponding path program 1 times [2024-11-19 08:55:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:58,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643911299] [2024-11-19 08:55:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:59,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643911299] [2024-11-19 08:55:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643911299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:59,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:55:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417083921] [2024-11-19 08:55:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:59,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:55:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:55:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:55:59,245 INFO L87 Difference]: Start difference. First operand 265 states and 303 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:55:59,341 INFO L93 Difference]: Finished difference Result 271 states and 311 transitions. [2024-11-19 08:55:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:55:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-19 08:55:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:55:59,343 INFO L225 Difference]: With dead ends: 271 [2024-11-19 08:55:59,343 INFO L226 Difference]: Without dead ends: 271 [2024-11-19 08:55:59,343 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 [2024-11-19 08:55:59,344 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 207 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:55:59,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 208 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:55:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-19 08:55:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2024-11-19 08:55:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 194 states have (on average 1.5824742268041236) internal successors, (307), 266 states have internal predecessors, (307), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:55:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 311 transitions. [2024-11-19 08:55:59,348 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 311 transitions. Word has length 51 [2024-11-19 08:55:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:55:59,348 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 311 transitions. [2024-11-19 08:55:59,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:55:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 311 transitions. [2024-11-19 08:55:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 08:55:59,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:55:59,349 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:55:59,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 08:55:59,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:55:59,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:55:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1007374378, now seen corresponding path program 1 times [2024-11-19 08:55:59,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:55:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106044040] [2024-11-19 08:55:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:55:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:55:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:55:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:55:59,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:55:59,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106044040] [2024-11-19 08:55:59,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106044040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:55:59,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:55:59,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 08:55:59,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294969078] [2024-11-19 08:55:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:55:59,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 08:55:59,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:55:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 08:55:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 08:55:59,908 INFO L87 Difference]: Start difference. First operand 270 states and 311 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:00,220 INFO L93 Difference]: Finished difference Result 282 states and 318 transitions. [2024-11-19 08:56:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:56:00,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-19 08:56:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:00,221 INFO L225 Difference]: With dead ends: 282 [2024-11-19 08:56:00,221 INFO L226 Difference]: Without dead ends: 282 [2024-11-19 08:56:00,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 08:56:00,222 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 477 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:00,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 443 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-19 08:56:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2024-11-19 08:56:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 194 states have (on average 1.577319587628866) internal successors, (306), 266 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 310 transitions. [2024-11-19 08:56:00,226 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 310 transitions. Word has length 51 [2024-11-19 08:56:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:00,227 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 310 transitions. [2024-11-19 08:56:00,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 310 transitions. [2024-11-19 08:56:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 08:56:00,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:00,227 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:00,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 08:56:00,228 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:00,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1753597880, now seen corresponding path program 1 times [2024-11-19 08:56:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:00,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340461941] [2024-11-19 08:56:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:00,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:00,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340461941] [2024-11-19 08:56:00,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340461941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:00,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:00,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:00,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875867315] [2024-11-19 08:56:00,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:00,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:56:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:00,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:56:00,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:00,545 INFO L87 Difference]: Start difference. First operand 270 states and 310 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:00,716 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-11-19 08:56:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-19 08:56:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:00,718 INFO L225 Difference]: With dead ends: 269 [2024-11-19 08:56:00,718 INFO L226 Difference]: Without dead ends: 269 [2024-11-19 08:56:00,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:00,719 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 14 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:00,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 726 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-19 08:56:00,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-19 08:56:00,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 194 states have (on average 1.5670103092783505) internal successors, (304), 265 states have internal predecessors, (304), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 308 transitions. [2024-11-19 08:56:00,723 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 308 transitions. Word has length 54 [2024-11-19 08:56:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:00,723 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 308 transitions. [2024-11-19 08:56:00,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 308 transitions. [2024-11-19 08:56:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 08:56:00,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:00,724 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:00,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 08:56:00,725 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:00,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:00,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1753597881, now seen corresponding path program 1 times [2024-11-19 08:56:00,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:00,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441873110] [2024-11-19 08:56:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:00,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441873110] [2024-11-19 08:56:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441873110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:01,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:01,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367789672] [2024-11-19 08:56:01,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:01,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:56:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:56:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:01,253 INFO L87 Difference]: Start difference. First operand 269 states and 308 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:01,441 INFO L93 Difference]: Finished difference Result 268 states and 306 transitions. [2024-11-19 08:56:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:01,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-19 08:56:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:01,442 INFO L225 Difference]: With dead ends: 268 [2024-11-19 08:56:01,442 INFO L226 Difference]: Without dead ends: 268 [2024-11-19 08:56:01,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:01,443 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 13 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:01,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 728 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:01,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-19 08:56:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-19 08:56:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 194 states have (on average 1.556701030927835) internal successors, (302), 264 states have internal predecessors, (302), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 306 transitions. [2024-11-19 08:56:01,447 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 306 transitions. Word has length 54 [2024-11-19 08:56:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:01,447 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 306 transitions. [2024-11-19 08:56:01,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 306 transitions. [2024-11-19 08:56:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 08:56:01,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:01,447 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:01,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 08:56:01,448 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:01,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash -216475537, now seen corresponding path program 1 times [2024-11-19 08:56:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372304419] [2024-11-19 08:56:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:01,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:01,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372304419] [2024-11-19 08:56:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372304419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:01,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555223835] [2024-11-19 08:56:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:01,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:56:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:56:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:01,643 INFO L87 Difference]: Start difference. First operand 268 states and 306 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:01,787 INFO L93 Difference]: Finished difference Result 267 states and 304 transitions. [2024-11-19 08:56:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-19 08:56:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:01,789 INFO L225 Difference]: With dead ends: 267 [2024-11-19 08:56:01,789 INFO L226 Difference]: Without dead ends: 267 [2024-11-19 08:56:01,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:01,789 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:01,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 785 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-19 08:56:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-19 08:56:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 194 states have (on average 1.5463917525773196) internal successors, (300), 263 states have internal predecessors, (300), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 304 transitions. [2024-11-19 08:56:01,793 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 304 transitions. Word has length 59 [2024-11-19 08:56:01,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:01,794 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 304 transitions. [2024-11-19 08:56:01,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 304 transitions. [2024-11-19 08:56:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 08:56:01,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:01,794 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:01,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 08:56:01,795 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:01,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash -216475536, now seen corresponding path program 1 times [2024-11-19 08:56:01,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674389876] [2024-11-19 08:56:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:02,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674389876] [2024-11-19 08:56:02,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674389876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:02,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:02,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 08:56:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959775379] [2024-11-19 08:56:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:02,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 08:56:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 08:56:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 08:56:02,425 INFO L87 Difference]: Start difference. First operand 267 states and 304 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:02,722 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2024-11-19 08:56:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 08:56:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-19 08:56:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:02,724 INFO L225 Difference]: With dead ends: 277 [2024-11-19 08:56:02,724 INFO L226 Difference]: Without dead ends: 277 [2024-11-19 08:56:02,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 08:56:02,724 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 13 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:02,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1031 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-19 08:56:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2024-11-19 08:56:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 202 states have (on average 1.5297029702970297) internal successors, (309), 271 states have internal predecessors, (309), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 313 transitions. [2024-11-19 08:56:02,728 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 313 transitions. Word has length 59 [2024-11-19 08:56:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:02,728 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 313 transitions. [2024-11-19 08:56:02,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 313 transitions. [2024-11-19 08:56:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 08:56:02,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:02,729 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-19 08:56:02,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 08:56:02,729 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:02,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:02,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1826213462, now seen corresponding path program 1 times [2024-11-19 08:56:02,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:02,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215583388] [2024-11-19 08:56:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:02,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:03,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:03,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215583388] [2024-11-19 08:56:03,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215583388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:03,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876553464] [2024-11-19 08:56:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:03,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:03,379 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) [2024-11-19 08:56:03,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 08:56:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:03,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 08:56:03,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:03,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 08:56:03,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 08:56:03,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 08:56:03,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-19 08:56:03,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2024-11-19 08:56:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:03,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876553464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:04,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:04,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-11-19 08:56:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582518579] [2024-11-19 08:56:04,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:04,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 08:56:04,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:04,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 08:56:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-19 08:56:04,136 INFO L87 Difference]: Start difference. First operand 275 states and 313 transitions. Second operand has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:04,808 INFO L93 Difference]: Finished difference Result 288 states and 326 transitions. [2024-11-19 08:56:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 08:56:04,809 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-19 08:56:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:04,810 INFO L225 Difference]: With dead ends: 288 [2024-11-19 08:56:04,810 INFO L226 Difference]: Without dead ends: 288 [2024-11-19 08:56:04,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2024-11-19 08:56:04,811 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 32 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:04,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1980 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 08:56:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-19 08:56:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-19 08:56:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 216 states have (on average 1.4907407407407407) internal successors, (322), 284 states have internal predecessors, (322), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:04,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 326 transitions. [2024-11-19 08:56:04,815 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 326 transitions. Word has length 64 [2024-11-19 08:56:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:04,815 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 326 transitions. [2024-11-19 08:56:04,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 326 transitions. [2024-11-19 08:56:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-19 08:56:04,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:04,816 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 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] [2024-11-19 08:56:04,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:05,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:05,017 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:05,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1054215480, now seen corresponding path program 1 times [2024-11-19 08:56:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842851477] [2024-11-19 08:56:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842851477] [2024-11-19 08:56:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842851477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488952716] [2024-11-19 08:56:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:05,219 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) [2024-11-19 08:56:05,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 08:56:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:05,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 08:56:05,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:05,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:05,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488952716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:05,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:05,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-19 08:56:05,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550494685] [2024-11-19 08:56:05,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:05,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 08:56:05,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 08:56:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:05,668 INFO L87 Difference]: Start difference. First operand 288 states and 326 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:05,715 INFO L93 Difference]: Finished difference Result 345 states and 381 transitions. [2024-11-19 08:56:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 08:56:05,717 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-19 08:56:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:05,718 INFO L225 Difference]: With dead ends: 345 [2024-11-19 08:56:05,718 INFO L226 Difference]: Without dead ends: 345 [2024-11-19 08:56:05,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:05,719 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 21 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:05,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1226 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-19 08:56:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 338. [2024-11-19 08:56:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 266 states have (on average 1.4172932330827068) internal successors, (377), 334 states have internal predecessors, (377), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 381 transitions. [2024-11-19 08:56:05,724 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 381 transitions. Word has length 75 [2024-11-19 08:56:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:05,725 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 381 transitions. [2024-11-19 08:56:05,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 381 transitions. [2024-11-19 08:56:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-19 08:56:05,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:05,725 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 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] [2024-11-19 08:56:05,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:05,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:05,926 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:05,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash -592392318, now seen corresponding path program 2 times [2024-11-19 08:56:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:05,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421761177] [2024-11-19 08:56:05,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:06,067 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:06,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:06,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421761177] [2024-11-19 08:56:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421761177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844431766] [2024-11-19 08:56:06,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:06,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:06,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:06,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 08:56:06,745 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:06,745 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:06,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 08:56:06,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:06,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:06,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844431766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:06,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:06,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-19 08:56:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363952652] [2024-11-19 08:56:06,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:06,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 08:56:06,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 08:56:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:06,940 INFO L87 Difference]: Start difference. First operand 338 states and 381 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:06,981 INFO L93 Difference]: Finished difference Result 367 states and 403 transitions. [2024-11-19 08:56:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:06,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2024-11-19 08:56:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:06,983 INFO L225 Difference]: With dead ends: 367 [2024-11-19 08:56:06,983 INFO L226 Difference]: Without dead ends: 367 [2024-11-19 08:56:06,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 190 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:06,984 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 24 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:06,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1229 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:06,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-19 08:56:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 358. [2024-11-19 08:56:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 286 states have (on average 1.3951048951048952) internal successors, (399), 354 states have internal predecessors, (399), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 403 transitions. [2024-11-19 08:56:06,989 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 403 transitions. Word has length 100 [2024-11-19 08:56:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:06,990 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 403 transitions. [2024-11-19 08:56:06,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 403 transitions. [2024-11-19 08:56:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 08:56:06,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:06,991 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-19 08:56:07,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 08:56:07,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:07,192 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:07,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:07,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1911546690, now seen corresponding path program 3 times [2024-11-19 08:56:07,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:07,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19755613] [2024-11-19 08:56:07,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:56:07,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:07,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 08:56:07,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:07,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:07,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19755613] [2024-11-19 08:56:07,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19755613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:07,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810340112] [2024-11-19 08:56:07,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:56:07,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:07,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:07,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:07,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 08:56:07,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 08:56:07,983 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:07,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 08:56:07,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:08,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:08,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-19 08:56:08,040 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:08,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 08:56:08,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:08,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 08:56:08,603 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:08,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 08:56:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:08,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:09,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 08:56:09,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-19 08:56:09,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2024-11-19 08:56:09,916 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-19 08:56:09,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 49 [2024-11-19 08:56:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:09,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810340112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:09,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-19 08:56:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955138430] [2024-11-19 08:56:09,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:09,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 08:56:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 08:56:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-19 08:56:09,956 INFO L87 Difference]: Start difference. First operand 358 states and 403 transitions. Second operand has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:10,718 INFO L93 Difference]: Finished difference Result 425 states and 463 transitions. [2024-11-19 08:56:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 08:56:10,719 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2024-11-19 08:56:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:10,720 INFO L225 Difference]: With dead ends: 425 [2024-11-19 08:56:10,720 INFO L226 Difference]: Without dead ends: 425 [2024-11-19 08:56:10,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2024-11-19 08:56:10,721 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 765 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:10,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1255 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 08:56:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-19 08:56:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 299. [2024-11-19 08:56:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 231 states have (on average 1.4285714285714286) internal successors, (330), 295 states have internal predecessors, (330), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 334 transitions. [2024-11-19 08:56:10,726 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 334 transitions. Word has length 110 [2024-11-19 08:56:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:10,726 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 334 transitions. [2024-11-19 08:56:10,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 334 transitions. [2024-11-19 08:56:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 08:56:10,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:10,727 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:10,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 08:56:10,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:10,931 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:10,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash -871595277, now seen corresponding path program 1 times [2024-11-19 08:56:10,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:10,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728424069] [2024-11-19 08:56:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728424069] [2024-11-19 08:56:11,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728424069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274023901] [2024-11-19 08:56:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:11,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:11,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:11,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:11,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 08:56:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:11,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 08:56:12,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:12,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:12,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 08:56:12,061 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:12,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 08:56:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:12,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:12,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2024-11-19 08:56:12,560 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-19 08:56:12,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 49 [2024-11-19 08:56:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:12,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274023901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:12,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:12,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-19 08:56:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942786290] [2024-11-19 08:56:12,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:12,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 08:56:12,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 08:56:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-19 08:56:12,598 INFO L87 Difference]: Start difference. First operand 299 states and 334 transitions. Second operand has 18 states, 17 states have (on average 4.882352941176471) internal successors, (83), 18 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:13,111 INFO L93 Difference]: Finished difference Result 365 states and 399 transitions. [2024-11-19 08:56:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 08:56:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.882352941176471) internal successors, (83), 18 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2024-11-19 08:56:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:13,113 INFO L225 Difference]: With dead ends: 365 [2024-11-19 08:56:13,113 INFO L226 Difference]: Without dead ends: 365 [2024-11-19 08:56:13,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2024-11-19 08:56:13,113 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 780 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:13,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 753 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 08:56:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-19 08:56:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 296. [2024-11-19 08:56:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 231 states have (on average 1.4155844155844155) internal successors, (327), 292 states have internal predecessors, (327), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2024-11-19 08:56:13,117 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 111 [2024-11-19 08:56:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:13,118 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2024-11-19 08:56:13,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.882352941176471) internal successors, (83), 18 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2024-11-19 08:56:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 08:56:13,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:13,119 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:13,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 08:56:13,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 08:56:13,319 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:13,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -83942790, now seen corresponding path program 1 times [2024-11-19 08:56:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:13,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419951236] [2024-11-19 08:56:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:14,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:14,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419951236] [2024-11-19 08:56:14,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419951236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966766089] [2024-11-19 08:56:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:14,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:14,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:14,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:14,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 08:56:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:14,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 08:56:14,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:14,819 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-19 08:56:14,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2024-11-19 08:56:14,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-19 08:56:14,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 08:56:14,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:14,973 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-19 08:56:14,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 40 [2024-11-19 08:56:14,985 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:14,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 08:56:15,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:15,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-19 08:56:15,877 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:15,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 08:56:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:15,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:16,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 08:56:16,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-19 08:56:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966766089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:17,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:17,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2024-11-19 08:56:17,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366024939] [2024-11-19 08:56:17,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:17,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 08:56:17,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 08:56:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2024-11-19 08:56:17,171 INFO L87 Difference]: Start difference. First operand 296 states and 331 transitions. Second operand has 22 states, 21 states have (on average 4.285714285714286) internal successors, (90), 22 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:18,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:18,160 INFO L93 Difference]: Finished difference Result 420 states and 458 transitions. [2024-11-19 08:56:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 08:56:18,160 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.285714285714286) internal successors, (90), 22 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 113 [2024-11-19 08:56:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:18,167 INFO L225 Difference]: With dead ends: 420 [2024-11-19 08:56:18,167 INFO L226 Difference]: Without dead ends: 420 [2024-11-19 08:56:18,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2024-11-19 08:56:18,168 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 945 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:18,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1172 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 08:56:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-19 08:56:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 291. [2024-11-19 08:56:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 227 states have (on average 1.4185022026431717) internal successors, (322), 287 states have internal predecessors, (322), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 326 transitions. [2024-11-19 08:56:18,174 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 326 transitions. Word has length 113 [2024-11-19 08:56:18,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:18,174 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 326 transitions. [2024-11-19 08:56:18,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.285714285714286) internal successors, (90), 22 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 326 transitions. [2024-11-19 08:56:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 08:56:18,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:18,175 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:18,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 08:56:18,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-19 08:56:18,380 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:18,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1677526631, now seen corresponding path program 1 times [2024-11-19 08:56:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:18,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589469667] [2024-11-19 08:56:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:18,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:18,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589469667] [2024-11-19 08:56:18,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589469667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:18,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:18,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 08:56:18,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781422089] [2024-11-19 08:56:18,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:18,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:56:18,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:56:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:18,802 INFO L87 Difference]: Start difference. First operand 291 states and 326 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:18,961 INFO L93 Difference]: Finished difference Result 338 states and 384 transitions. [2024-11-19 08:56:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:56:18,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2024-11-19 08:56:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:18,963 INFO L225 Difference]: With dead ends: 338 [2024-11-19 08:56:18,963 INFO L226 Difference]: Without dead ends: 338 [2024-11-19 08:56:18,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 08:56:18,965 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 413 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:18,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 544 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-19 08:56:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 294. [2024-11-19 08:56:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 230 states have (on average 1.4173913043478261) internal successors, (326), 290 states have internal predecessors, (326), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 08:56:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 330 transitions. [2024-11-19 08:56:18,969 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 330 transitions. Word has length 114 [2024-11-19 08:56:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:18,970 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 330 transitions. [2024-11-19 08:56:18,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 330 transitions. [2024-11-19 08:56:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-19 08:56:18,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:18,971 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:18,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 08:56:18,971 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:18,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1490505751, now seen corresponding path program 1 times [2024-11-19 08:56:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649983422] [2024-11-19 08:56:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649983422] [2024-11-19 08:56:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649983422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:19,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807248812] [2024-11-19 08:56:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:19,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:19,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:19,337 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:19,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 08:56:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:19,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 08:56:19,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:19,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:20,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-19 08:56:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:20,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807248812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:20,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-19 08:56:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758898310] [2024-11-19 08:56:20,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:20,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 08:56:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 08:56:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-19 08:56:20,221 INFO L87 Difference]: Start difference. First operand 294 states and 330 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:20,542 INFO L93 Difference]: Finished difference Result 426 states and 475 transitions. [2024-11-19 08:56:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 08:56:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2024-11-19 08:56:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:20,544 INFO L225 Difference]: With dead ends: 426 [2024-11-19 08:56:20,544 INFO L226 Difference]: Without dead ends: 426 [2024-11-19 08:56:20,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-19 08:56:20,545 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 309 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:20,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1106 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-19 08:56:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 339. [2024-11-19 08:56:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 275 states have (on average 1.4472727272727273) internal successors, (398), 334 states have internal predecessors, (398), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 08:56:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 404 transitions. [2024-11-19 08:56:20,551 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 404 transitions. Word has length 116 [2024-11-19 08:56:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:20,551 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 404 transitions. [2024-11-19 08:56:20,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 404 transitions. [2024-11-19 08:56:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 08:56:20,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:20,552 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:20,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 08:56:20,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 08:56:20,754 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:20,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash -92028026, now seen corresponding path program 1 times [2024-11-19 08:56:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:20,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015965233] [2024-11-19 08:56:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:22,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015965233] [2024-11-19 08:56:22,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015965233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774839232] [2024-11-19 08:56:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:22,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:22,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:22,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:22,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 08:56:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:22,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 08:56:22,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:22,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 08:56:22,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 08:56:23,050 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-19 08:56:23,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-19 08:56:23,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:23,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-19 08:56:23,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-19 08:56:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:23,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:24,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774839232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:24,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:24,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 23 [2024-11-19 08:56:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388289163] [2024-11-19 08:56:24,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:24,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 08:56:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 08:56:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-19 08:56:24,069 INFO L87 Difference]: Start difference. First operand 339 states and 404 transitions. Second operand has 23 states, 23 states have (on average 3.869565217391304) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:24,415 INFO L93 Difference]: Finished difference Result 569 states and 690 transitions. [2024-11-19 08:56:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.869565217391304) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-19 08:56:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:24,418 INFO L225 Difference]: With dead ends: 569 [2024-11-19 08:56:24,418 INFO L226 Difference]: Without dead ends: 569 [2024-11-19 08:56:24,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2024-11-19 08:56:24,418 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 1130 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:24,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 2840 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-19 08:56:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 404. [2024-11-19 08:56:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 399 states have internal predecessors, (465), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 08:56:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 471 transitions. [2024-11-19 08:56:24,427 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 471 transitions. Word has length 117 [2024-11-19 08:56:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:24,427 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 471 transitions. [2024-11-19 08:56:24,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.869565217391304) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 471 transitions. [2024-11-19 08:56:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 08:56:24,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:24,428 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:24,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:24,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 08:56:24,628 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:24,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1038961600, now seen corresponding path program 1 times [2024-11-19 08:56:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660562398] [2024-11-19 08:56:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:25,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:25,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660562398] [2024-11-19 08:56:25,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660562398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:25,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604347627] [2024-11-19 08:56:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:25,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:25,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:25,544 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:25,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 08:56:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:25,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 08:56:25,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:25,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:26,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 08:56:26,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-19 08:56:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-19 08:56:26,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:26,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 08:56:26,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 08:56:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-19 08:56:26,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604347627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:26,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 25 [2024-11-19 08:56:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723989371] [2024-11-19 08:56:26,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:26,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 08:56:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 08:56:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-11-19 08:56:26,508 INFO L87 Difference]: Start difference. First operand 404 states and 471 transitions. Second operand has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:26,759 INFO L93 Difference]: Finished difference Result 568 states and 690 transitions. [2024-11-19 08:56:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 08:56:26,763 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-19 08:56:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:26,765 INFO L225 Difference]: With dead ends: 568 [2024-11-19 08:56:26,765 INFO L226 Difference]: Without dead ends: 568 [2024-11-19 08:56:26,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2024-11-19 08:56:26,766 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 775 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:26,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 2523 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-19 08:56:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 517. [2024-11-19 08:56:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 451 states have (on average 1.4523281596452329) internal successors, (655), 510 states have internal predecessors, (655), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 665 transitions. [2024-11-19 08:56:26,777 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 665 transitions. Word has length 117 [2024-11-19 08:56:26,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:26,777 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 665 transitions. [2024-11-19 08:56:26,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 665 transitions. [2024-11-19 08:56:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 08:56:26,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:26,778 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:26,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 08:56:26,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 08:56:26,983 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:26,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1043430180, now seen corresponding path program 1 times [2024-11-19 08:56:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433862822] [2024-11-19 08:56:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:27,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:27,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433862822] [2024-11-19 08:56:27,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433862822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:27,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:27,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 08:56:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979786373] [2024-11-19 08:56:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:27,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 08:56:27,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 08:56:27,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 08:56:27,447 INFO L87 Difference]: Start difference. First operand 517 states and 665 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:27,536 INFO L93 Difference]: Finished difference Result 559 states and 713 transitions. [2024-11-19 08:56:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 08:56:27,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-19 08:56:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:27,539 INFO L225 Difference]: With dead ends: 559 [2024-11-19 08:56:27,539 INFO L226 Difference]: Without dead ends: 559 [2024-11-19 08:56:27,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-19 08:56:27,540 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 41 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:27,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1330 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-19 08:56:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 515. [2024-11-19 08:56:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 449 states have (on average 1.4365256124721604) internal successors, (645), 508 states have internal predecessors, (645), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 655 transitions. [2024-11-19 08:56:27,550 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 655 transitions. Word has length 117 [2024-11-19 08:56:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:27,551 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 655 transitions. [2024-11-19 08:56:27,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 655 transitions. [2024-11-19 08:56:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-19 08:56:27,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:27,552 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:27,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 08:56:27,552 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:27,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2143038058, now seen corresponding path program 1 times [2024-11-19 08:56:27,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:27,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621376874] [2024-11-19 08:56:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621376874] [2024-11-19 08:56:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621376874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187010448] [2024-11-19 08:56:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:28,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:28,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:28,642 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:28,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 08:56:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:29,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 08:56:29,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:29,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:29,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 08:56:29,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:29,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 08:56:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:29,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:29,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 08:56:29,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 08:56:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187010448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:29,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 16 [2024-11-19 08:56:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438092252] [2024-11-19 08:56:29,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:29,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 08:56:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 08:56:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-19 08:56:29,486 INFO L87 Difference]: Start difference. First operand 515 states and 655 transitions. Second operand has 17 states, 16 states have (on average 5.3125) internal successors, (85), 17 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:29,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:29,687 INFO L93 Difference]: Finished difference Result 559 states and 679 transitions. [2024-11-19 08:56:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 08:56:29,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.3125) internal successors, (85), 17 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2024-11-19 08:56:29,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:29,689 INFO L225 Difference]: With dead ends: 559 [2024-11-19 08:56:29,689 INFO L226 Difference]: Without dead ends: 559 [2024-11-19 08:56:29,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-19 08:56:29,690 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 356 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:29,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1558 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-19 08:56:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 516. [2024-11-19 08:56:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 450 states have (on average 1.4355555555555555) internal successors, (646), 509 states have internal predecessors, (646), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 656 transitions. [2024-11-19 08:56:29,700 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 656 transitions. Word has length 118 [2024-11-19 08:56:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:29,700 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 656 transitions. [2024-11-19 08:56:29,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.3125) internal successors, (85), 17 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 656 transitions. [2024-11-19 08:56:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-19 08:56:29,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:29,702 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:29,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 08:56:29,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-19 08:56:29,902 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:29,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:29,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2143083802, now seen corresponding path program 1 times [2024-11-19 08:56:29,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:29,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419787590] [2024-11-19 08:56:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:29,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:30,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:30,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419787590] [2024-11-19 08:56:30,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419787590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:30,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:30,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:30,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646118589] [2024-11-19 08:56:30,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:30,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:30,034 INFO L87 Difference]: Start difference. First operand 516 states and 656 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:30,059 INFO L93 Difference]: Finished difference Result 515 states and 654 transitions. [2024-11-19 08:56:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:30,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2024-11-19 08:56:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:30,061 INFO L225 Difference]: With dead ends: 515 [2024-11-19 08:56:30,061 INFO L226 Difference]: Without dead ends: 515 [2024-11-19 08:56:30,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:30,061 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 176 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:30,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 250 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:30,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-19 08:56:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-19 08:56:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 450 states have (on average 1.431111111111111) internal successors, (644), 508 states have internal predecessors, (644), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 654 transitions. [2024-11-19 08:56:30,073 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 654 transitions. Word has length 118 [2024-11-19 08:56:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:30,073 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 654 transitions. [2024-11-19 08:56:30,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 654 transitions. [2024-11-19 08:56:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-19 08:56:30,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:30,074 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:30,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-19 08:56:30,075 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:30,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2009669886, now seen corresponding path program 1 times [2024-11-19 08:56:30,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:30,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760651715] [2024-11-19 08:56:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:30,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760651715] [2024-11-19 08:56:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760651715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69912622] [2024-11-19 08:56:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:30,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:30,837 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:30,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 08:56:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:31,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 08:56:31,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:31,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 08:56:31,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:31,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 08:56:31,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:31,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 08:56:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:31,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:31,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 08:56:31,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 08:56:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69912622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:31,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 19 [2024-11-19 08:56:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198908237] [2024-11-19 08:56:31,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:31,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 08:56:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 08:56:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-19 08:56:31,640 INFO L87 Difference]: Start difference. First operand 515 states and 654 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:32,188 INFO L93 Difference]: Finished difference Result 545 states and 661 transitions. [2024-11-19 08:56:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-11-19 08:56:32,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:32,190 INFO L225 Difference]: With dead ends: 545 [2024-11-19 08:56:32,190 INFO L226 Difference]: Without dead ends: 545 [2024-11-19 08:56:32,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-19 08:56:32,190 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 451 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:32,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2188 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 08:56:32,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-19 08:56:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 516. [2024-11-19 08:56:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 451 states have (on average 1.4301552106430155) internal successors, (645), 509 states have internal predecessors, (645), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 655 transitions. [2024-11-19 08:56:32,198 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 655 transitions. Word has length 119 [2024-11-19 08:56:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:32,198 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 655 transitions. [2024-11-19 08:56:32,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 655 transitions. [2024-11-19 08:56:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-19 08:56:32,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:32,200 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:32,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:32,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:32,400 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:32,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:32,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2127993722, now seen corresponding path program 1 times [2024-11-19 08:56:32,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:32,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740925563] [2024-11-19 08:56:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:32,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:32,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740925563] [2024-11-19 08:56:32,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740925563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:32,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:32,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:32,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750087763] [2024-11-19 08:56:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:32,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 08:56:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:32,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 08:56:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:56:32,591 INFO L87 Difference]: Start difference. First operand 516 states and 655 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:32,605 INFO L93 Difference]: Finished difference Result 514 states and 646 transitions. [2024-11-19 08:56:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 08:56:32,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2024-11-19 08:56:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:32,610 INFO L225 Difference]: With dead ends: 514 [2024-11-19 08:56:32,610 INFO L226 Difference]: Without dead ends: 514 [2024-11-19 08:56:32,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:56:32,611 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:32,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 700 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-19 08:56:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2024-11-19 08:56:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 449 states have (on average 1.4164810690423162) internal successors, (636), 507 states have internal predecessors, (636), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 646 transitions. [2024-11-19 08:56:32,622 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 646 transitions. Word has length 120 [2024-11-19 08:56:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:32,623 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 646 transitions. [2024-11-19 08:56:32,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 646 transitions. [2024-11-19 08:56:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-19 08:56:32,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:32,624 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:32,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-19 08:56:32,624 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr90ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:32,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash 79790336, now seen corresponding path program 1 times [2024-11-19 08:56:32,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:32,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746087723] [2024-11-19 08:56:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:32,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746087723] [2024-11-19 08:56:32,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746087723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:32,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:32,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883999145] [2024-11-19 08:56:32,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:32,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:32,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:32,778 INFO L87 Difference]: Start difference. First operand 514 states and 646 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:32,812 INFO L93 Difference]: Finished difference Result 513 states and 645 transitions. [2024-11-19 08:56:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2024-11-19 08:56:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:32,814 INFO L225 Difference]: With dead ends: 513 [2024-11-19 08:56:32,814 INFO L226 Difference]: Without dead ends: 513 [2024-11-19 08:56:32,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:32,814 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 179 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:32,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 243 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-19 08:56:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2024-11-19 08:56:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 449 states have (on average 1.4142538975501113) internal successors, (635), 506 states have internal predecessors, (635), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 645 transitions. [2024-11-19 08:56:32,824 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 645 transitions. Word has length 121 [2024-11-19 08:56:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:32,824 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 645 transitions. [2024-11-19 08:56:32,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 645 transitions. [2024-11-19 08:56:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-19 08:56:32,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:32,825 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-19 08:56:32,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-19 08:56:32,825 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:32,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1769002747, now seen corresponding path program 1 times [2024-11-19 08:56:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:32,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764526934] [2024-11-19 08:56:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764526934] [2024-11-19 08:56:33,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764526934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241494881] [2024-11-19 08:56:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:33,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:33,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:33,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:33,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 08:56:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:33,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 08:56:33,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:33,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241494881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:33,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:33,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 08:56:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748509824] [2024-11-19 08:56:33,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:33,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 08:56:33,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 08:56:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:33,767 INFO L87 Difference]: Start difference. First operand 513 states and 645 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:33,829 INFO L93 Difference]: Finished difference Result 596 states and 709 transitions. [2024-11-19 08:56:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 08:56:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-19 08:56:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:33,831 INFO L225 Difference]: With dead ends: 596 [2024-11-19 08:56:33,831 INFO L226 Difference]: Without dead ends: 596 [2024-11-19 08:56:33,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:33,832 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 100 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:33,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1336 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-19 08:56:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 515. [2024-11-19 08:56:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 451 states have (on average 1.4124168514412416) internal successors, (637), 508 states have internal predecessors, (637), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 647 transitions. [2024-11-19 08:56:33,843 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 647 transitions. Word has length 122 [2024-11-19 08:56:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:33,845 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 647 transitions. [2024-11-19 08:56:33,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 647 transitions. [2024-11-19 08:56:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-19 08:56:33,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:33,846 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:33,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:34,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:34,046 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:34,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1821466390, now seen corresponding path program 1 times [2024-11-19 08:56:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728570716] [2024-11-19 08:56:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:34,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:34,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728570716] [2024-11-19 08:56:34,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728570716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:34,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068413930] [2024-11-19 08:56:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:34,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:34,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:34,299 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:34,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 08:56:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:34,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 08:56:34,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:34,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:34,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068413930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:34,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:34,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 08:56:34,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360474251] [2024-11-19 08:56:34,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:34,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 08:56:34,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 08:56:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 08:56:34,858 INFO L87 Difference]: Start difference. First operand 515 states and 647 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:34,924 INFO L93 Difference]: Finished difference Result 518 states and 646 transitions. [2024-11-19 08:56:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 08:56:34,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-19 08:56:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:34,927 INFO L225 Difference]: With dead ends: 518 [2024-11-19 08:56:34,927 INFO L226 Difference]: Without dead ends: 518 [2024-11-19 08:56:34,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:34,927 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 219 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:34,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 712 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-19 08:56:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 511. [2024-11-19 08:56:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 447 states have (on average 1.407158836689038) internal successors, (629), 504 states have internal predecessors, (629), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 639 transitions. [2024-11-19 08:56:34,936 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 639 transitions. Word has length 122 [2024-11-19 08:56:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:34,937 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 639 transitions. [2024-11-19 08:56:34,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 639 transitions. [2024-11-19 08:56:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-19 08:56:34,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:34,939 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:34,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 08:56:35,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-19 08:56:35,139 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:35,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash -596758811, now seen corresponding path program 1 times [2024-11-19 08:56:35,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:35,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616924868] [2024-11-19 08:56:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:35,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:35,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:35,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616924868] [2024-11-19 08:56:35,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616924868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:35,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:35,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331776111] [2024-11-19 08:56:35,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:35,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:35,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:35,302 INFO L87 Difference]: Start difference. First operand 511 states and 639 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:35,367 INFO L93 Difference]: Finished difference Result 510 states and 637 transitions. [2024-11-19 08:56:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:35,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-19 08:56:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:35,369 INFO L225 Difference]: With dead ends: 510 [2024-11-19 08:56:35,369 INFO L226 Difference]: Without dead ends: 510 [2024-11-19 08:56:35,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:35,370 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 1 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:35,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 392 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-19 08:56:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2024-11-19 08:56:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 447 states have (on average 1.4026845637583893) internal successors, (627), 503 states have internal predecessors, (627), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 637 transitions. [2024-11-19 08:56:35,376 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 637 transitions. Word has length 122 [2024-11-19 08:56:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:35,377 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 637 transitions. [2024-11-19 08:56:35,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 637 transitions. [2024-11-19 08:56:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-19 08:56:35,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:35,378 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:35,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-19 08:56:35,378 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:35,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash -596758810, now seen corresponding path program 1 times [2024-11-19 08:56:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611726305] [2024-11-19 08:56:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:35,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611726305] [2024-11-19 08:56:35,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611726305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:35,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164351899] [2024-11-19 08:56:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:35,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:35,632 INFO L87 Difference]: Start difference. First operand 510 states and 637 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:35,712 INFO L93 Difference]: Finished difference Result 509 states and 635 transitions. [2024-11-19 08:56:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:35,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-19 08:56:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:35,714 INFO L225 Difference]: With dead ends: 509 [2024-11-19 08:56:35,714 INFO L226 Difference]: Without dead ends: 509 [2024-11-19 08:56:35,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:35,715 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:35,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:35,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-19 08:56:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2024-11-19 08:56:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 447 states have (on average 1.3982102908277405) internal successors, (625), 502 states have internal predecessors, (625), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 635 transitions. [2024-11-19 08:56:35,721 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 635 transitions. Word has length 122 [2024-11-19 08:56:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:35,721 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 635 transitions. [2024-11-19 08:56:35,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 635 transitions. [2024-11-19 08:56:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-19 08:56:35,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:35,722 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:35,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-19 08:56:35,722 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:35,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1111101113, now seen corresponding path program 1 times [2024-11-19 08:56:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799701606] [2024-11-19 08:56:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799701606] [2024-11-19 08:56:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799701606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:36,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021285048] [2024-11-19 08:56:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:36,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:36,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:36,795 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:36,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 08:56:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:37,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 08:56:37,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:37,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 08:56:37,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-19 08:56:37,354 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:37,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 08:56:37,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:37,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-19 08:56:37,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:37,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-19 08:56:37,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 08:56:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:37,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:37,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-19 08:56:37,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 08:56:37,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-19 08:56:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021285048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:37,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:37,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 20 [2024-11-19 08:56:37,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177631697] [2024-11-19 08:56:37,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:37,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 08:56:37,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 08:56:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-11-19 08:56:37,876 INFO L87 Difference]: Start difference. First operand 509 states and 635 transitions. Second operand has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:38,288 INFO L93 Difference]: Finished difference Result 540 states and 649 transitions. [2024-11-19 08:56:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 08:56:38,288 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-19 08:56:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:38,289 INFO L225 Difference]: With dead ends: 540 [2024-11-19 08:56:38,289 INFO L226 Difference]: Without dead ends: 540 [2024-11-19 08:56:38,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-19 08:56:38,290 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 493 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:38,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1679 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-19 08:56:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 513. [2024-11-19 08:56:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 451 states have (on average 1.394678492239468) internal successors, (629), 506 states have internal predecessors, (629), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 639 transitions. [2024-11-19 08:56:38,296 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 639 transitions. Word has length 125 [2024-11-19 08:56:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:38,296 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 639 transitions. [2024-11-19 08:56:38,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 639 transitions. [2024-11-19 08:56:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-19 08:56:38,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:38,297 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:38,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 08:56:38,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-19 08:56:38,498 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:38,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:38,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1173562013, now seen corresponding path program 1 times [2024-11-19 08:56:38,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:38,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608334280] [2024-11-19 08:56:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:38,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608334280] [2024-11-19 08:56:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608334280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:38,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:38,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:38,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630790073] [2024-11-19 08:56:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:38,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 08:56:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:38,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 08:56:38,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:56:38,681 INFO L87 Difference]: Start difference. First operand 513 states and 639 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:38,700 INFO L93 Difference]: Finished difference Result 511 states and 631 transitions. [2024-11-19 08:56:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 08:56:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-19 08:56:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:38,702 INFO L225 Difference]: With dead ends: 511 [2024-11-19 08:56:38,702 INFO L226 Difference]: Without dead ends: 511 [2024-11-19 08:56:38,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:56:38,703 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 2 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:38,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 686 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-19 08:56:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 505. [2024-11-19 08:56:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 443 states have (on average 1.3837471783295712) internal successors, (613), 498 states have internal predecessors, (613), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 623 transitions. [2024-11-19 08:56:38,709 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 623 transitions. Word has length 125 [2024-11-19 08:56:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:38,709 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 623 transitions. [2024-11-19 08:56:38,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 623 transitions. [2024-11-19 08:56:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-19 08:56:38,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:38,710 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:38,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-19 08:56:38,711 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:38,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1967271444, now seen corresponding path program 1 times [2024-11-19 08:56:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201824551] [2024-11-19 08:56:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:38,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:38,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201824551] [2024-11-19 08:56:38,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201824551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:38,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:38,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 08:56:38,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959326982] [2024-11-19 08:56:38,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:38,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 08:56:38,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 08:56:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 08:56:38,975 INFO L87 Difference]: Start difference. First operand 505 states and 623 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:39,043 INFO L93 Difference]: Finished difference Result 523 states and 644 transitions. [2024-11-19 08:56:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 08:56:39,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2024-11-19 08:56:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:39,045 INFO L225 Difference]: With dead ends: 523 [2024-11-19 08:56:39,045 INFO L226 Difference]: Without dead ends: 523 [2024-11-19 08:56:39,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-19 08:56:39,046 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 19 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:39,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1291 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-19 08:56:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 512. [2024-11-19 08:56:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 450 states have (on average 1.3755555555555556) internal successors, (619), 505 states have internal predecessors, (619), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 08:56:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 629 transitions. [2024-11-19 08:56:39,052 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 629 transitions. Word has length 126 [2024-11-19 08:56:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:39,052 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 629 transitions. [2024-11-19 08:56:39,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 629 transitions. [2024-11-19 08:56:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-19 08:56:39,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:39,053 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:39,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-19 08:56:39,053 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:39,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1781837507, now seen corresponding path program 1 times [2024-11-19 08:56:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:39,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473688928] [2024-11-19 08:56:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:39,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473688928] [2024-11-19 08:56:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473688928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:39,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171322815] [2024-11-19 08:56:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:39,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:39,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:39,406 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:39,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 08:56:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:39,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 08:56:39,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:40,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:40,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171322815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:40,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:40,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 08:56:40,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650341822] [2024-11-19 08:56:40,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:40,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 08:56:40,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 08:56:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 08:56:40,277 INFO L87 Difference]: Start difference. First operand 512 states and 629 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:40,350 INFO L93 Difference]: Finished difference Result 481 states and 545 transitions. [2024-11-19 08:56:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 08:56:40,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2024-11-19 08:56:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:40,352 INFO L225 Difference]: With dead ends: 481 [2024-11-19 08:56:40,352 INFO L226 Difference]: Without dead ends: 481 [2024-11-19 08:56:40,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:40,353 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 69 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:40,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1779 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-19 08:56:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 420. [2024-11-19 08:56:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 360 states have (on average 1.325) internal successors, (477), 415 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 08:56:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 483 transitions. [2024-11-19 08:56:40,358 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 483 transitions. Word has length 127 [2024-11-19 08:56:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:40,358 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 483 transitions. [2024-11-19 08:56:40,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 483 transitions. [2024-11-19 08:56:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 08:56:40,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:40,359 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:40,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 08:56:40,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:40,560 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:40,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash -499210225, now seen corresponding path program 1 times [2024-11-19 08:56:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487512008] [2024-11-19 08:56:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487512008] [2024-11-19 08:56:41,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487512008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344379981] [2024-11-19 08:56:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:41,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:41,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:41,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 08:56:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:42,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 08:56:42,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:42,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 08:56:42,329 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:42,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 08:56:42,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:42,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-19 08:56:42,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:42,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-19 08:56:42,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 08:56:42,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 08:56:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:42,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:42,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 08:56:42,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-19 08:56:43,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-19 08:56:43,079 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 08:56:43,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-19 08:56:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:43,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344379981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:43,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:43,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 23 [2024-11-19 08:56:43,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219074789] [2024-11-19 08:56:43,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:43,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 08:56:43,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 08:56:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2024-11-19 08:56:43,091 INFO L87 Difference]: Start difference. First operand 420 states and 483 transitions. Second operand has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 24 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:43,488 INFO L93 Difference]: Finished difference Result 434 states and 496 transitions. [2024-11-19 08:56:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 08:56:43,489 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 24 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2024-11-19 08:56:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:43,490 INFO L225 Difference]: With dead ends: 434 [2024-11-19 08:56:43,490 INFO L226 Difference]: Without dead ends: 434 [2024-11-19 08:56:43,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 245 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-11-19 08:56:43,491 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 259 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:43,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1431 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-19 08:56:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 423. [2024-11-19 08:56:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 363 states have (on average 1.322314049586777) internal successors, (480), 418 states have internal predecessors, (480), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 08:56:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 486 transitions. [2024-11-19 08:56:43,495 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 486 transitions. Word has length 128 [2024-11-19 08:56:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:43,496 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 486 transitions. [2024-11-19 08:56:43,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 24 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 486 transitions. [2024-11-19 08:56:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 08:56:43,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:43,497 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:43,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:43,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:43,697 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr92ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:43,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1704352701, now seen corresponding path program 1 times [2024-11-19 08:56:43,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:43,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213216030] [2024-11-19 08:56:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:43,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-19 08:56:43,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213216030] [2024-11-19 08:56:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213216030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:43,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:43,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:43,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699553006] [2024-11-19 08:56:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:43,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:43,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:43,851 INFO L87 Difference]: Start difference. First operand 423 states and 486 transitions. Second operand has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:43,857 INFO L93 Difference]: Finished difference Result 422 states and 485 transitions. [2024-11-19 08:56:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:43,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2024-11-19 08:56:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:43,858 INFO L225 Difference]: With dead ends: 422 [2024-11-19 08:56:43,858 INFO L226 Difference]: Without dead ends: 422 [2024-11-19 08:56:43,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:43,859 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 171 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 242 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 [2024-11-19 08:56:43,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 242 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-19 08:56:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-11-19 08:56:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 363 states have (on average 1.3195592286501376) internal successors, (479), 417 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 08:56:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 485 transitions. [2024-11-19 08:56:43,863 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 485 transitions. Word has length 129 [2024-11-19 08:56:43,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:43,863 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 485 transitions. [2024-11-19 08:56:43,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 485 transitions. [2024-11-19 08:56:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 08:56:43,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:43,864 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:43,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-19 08:56:43,864 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr93ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:43,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1295326673, now seen corresponding path program 1 times [2024-11-19 08:56:43,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:43,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670752342] [2024-11-19 08:56:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:43,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-19 08:56:44,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:44,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670752342] [2024-11-19 08:56:44,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670752342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:44,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:44,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173879976] [2024-11-19 08:56:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:44,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:44,015 INFO L87 Difference]: Start difference. First operand 422 states and 485 transitions. Second operand has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:44,058 INFO L93 Difference]: Finished difference Result 421 states and 484 transitions. [2024-11-19 08:56:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:44,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2024-11-19 08:56:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:44,059 INFO L225 Difference]: With dead ends: 421 [2024-11-19 08:56:44,059 INFO L226 Difference]: Without dead ends: 421 [2024-11-19 08:56:44,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:44,060 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 172 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:44,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 225 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-19 08:56:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-11-19 08:56:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 363 states have (on average 1.3168044077134986) internal successors, (478), 416 states have internal predecessors, (478), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 08:56:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 484 transitions. [2024-11-19 08:56:44,064 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 484 transitions. Word has length 130 [2024-11-19 08:56:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:44,065 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 484 transitions. [2024-11-19 08:56:44,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 08:56:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 484 transitions. [2024-11-19 08:56:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 08:56:44,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:44,066 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:44,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-19 08:56:44,066 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr94ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:44,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1500421695, now seen corresponding path program 1 times [2024-11-19 08:56:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460614619] [2024-11-19 08:56:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:44,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:45,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460614619] [2024-11-19 08:56:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460614619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:45,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939468897] [2024-11-19 08:56:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:45,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:45,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:45,790 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:45,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 08:56:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:46,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 08:56:46,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:46,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 08:56:46,438 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-11-19 08:56:46,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 32 [2024-11-19 08:56:46,542 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-19 08:56:46,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-19 08:56:46,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:46,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-19 08:56:46,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:47,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-19 08:56:47,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-19 08:56:47,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-19 08:56:47,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2024-11-19 08:56:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:47,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:48,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-19 08:56:48,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-11-19 08:56:48,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939468897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:48,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 08:56:48,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2024-11-19 08:56:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066920170] [2024-11-19 08:56:48,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:48,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 08:56:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 08:56:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 08:56:48,873 INFO L87 Difference]: Start difference. First operand 421 states and 484 transitions. Second operand has 27 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 27 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 08:56:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:49,739 INFO L93 Difference]: Finished difference Result 445 states and 508 transitions. [2024-11-19 08:56:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 08:56:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 27 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 131 [2024-11-19 08:56:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:49,741 INFO L225 Difference]: With dead ends: 445 [2024-11-19 08:56:49,741 INFO L226 Difference]: Without dead ends: 445 [2024-11-19 08:56:49,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 08:56:49,742 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 687 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:49,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 2155 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 08:56:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-19 08:56:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 424. [2024-11-19 08:56:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 366 states have (on average 1.314207650273224) internal successors, (481), 419 states have internal predecessors, (481), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 08:56:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 487 transitions. [2024-11-19 08:56:49,746 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 487 transitions. Word has length 131 [2024-11-19 08:56:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:49,746 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 487 transitions. [2024-11-19 08:56:49,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 27 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 08:56:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 487 transitions. [2024-11-19 08:56:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-19 08:56:49,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:49,747 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:49,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 08:56:49,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-19 08:56:49,948 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr95ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-19 08:56:49,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash -731567212, now seen corresponding path program 1 times [2024-11-19 08:56:49,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:49,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579702255] [2024-11-19 08:56:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:49,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:54,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:54,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579702255] [2024-11-19 08:56:54,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579702255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:54,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437323135] [2024-11-19 08:56:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:54,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:54,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:54,003 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:54,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 08:56:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:54,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 08:56:54,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:54,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2024-11-19 08:56:55,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:55,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 141 [2024-11-19 08:56:55,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 08:56:58,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 141