/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2018/Problem12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 05:02:58,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 05:02:58,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 05:02:58,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 05:02:58,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 05:02:58,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 05:02:58,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 05:02:58,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 05:02:58,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 05:02:58,366 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 05:02:58,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 05:02:58,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 05:02:58,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 05:02:58,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 05:02:58,368 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 05:02:58,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 05:02:58,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 05:02:58,369 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 05:02:58,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 05:02:58,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 05:02:58,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 05:02:58,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 05:02:58,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 05:02:58,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 05:02:58,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 05:02:58,372 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 05:02:58,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 05:02:58,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 05:02:58,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 05:02:58,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 05:02:58,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 05:02:58,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 05:02:58,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 05:02:58,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 05:02:58,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 05:02:58,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 05:02:58,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 05:02:58,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 05:02:58,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 05:02:58,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 05:02:58,376 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 05:02:58,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 05:02:58,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 05:02:58,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 05:02:58,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 05:02:58,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 05:02:58,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 05:02:58,648 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 05:02:58,648 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 05:02:58,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2018/Problem12.c [2023-12-19 05:02:59,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 05:03:00,475 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 05:03:00,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem12.c [2023-12-19 05:03:00,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f732b9e3e/c7e0c1eb1c9a4f1da6731253c71ac665/FLAG22b965fea [2023-12-19 05:03:00,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f732b9e3e/c7e0c1eb1c9a4f1da6731253c71ac665 [2023-12-19 05:03:00,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 05:03:00,554 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 05:03:00,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 05:03:00,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 05:03:00,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 05:03:00,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:03:00" (1/1) ... [2023-12-19 05:03:00,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e439e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:00, skipping insertion in model container [2023-12-19 05:03:00,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:03:00" (1/1) ... [2023-12-19 05:03:00,793 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 05:03:00,979 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem12.c[778,791] [2023-12-19 05:03:00,991 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem12.c[817,830] [2023-12-19 05:03:03,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 05:03:03,779 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 05:03:03,793 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem12.c[778,791] [2023-12-19 05:03:03,793 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem12.c[817,830] [2023-12-19 05:03:04,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 05:03:04,659 INFO L206 MainTranslator]: Completed translation [2023-12-19 05:03:04,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04 WrapperNode [2023-12-19 05:03:04,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 05:03:04,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 05:03:04,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 05:03:04,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 05:03:04,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:04,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:06,751 INFO L138 Inliner]: procedures = 350, calls = 5526, calls flagged for inlining = 234, calls inlined = 234, statements flattened = 43808 [2023-12-19 05:03:06,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 05:03:06,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 05:03:06,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 05:03:06,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 05:03:06,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:06,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:07,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:08,236 INFO L175 MemorySlicer]: Split 5143 memory accesses to 26 slices as follows [226, 30, 244, 32, 96, 264, 58, 2, 600, 38, 558, 93, 58, 68, 56, 257, 92, 540, 28, 82, 520, 353, 149, 75, 83, 541]. 12 percent of accesses are in the largest equivalence class. The 319 initializations are split as follows [18, 18, 18, 18, 8, 18, 8, 2, 15, 18, 8, 8, 8, 18, 8, 18, 8, 8, 18, 18, 8, 8, 8, 8, 18, 8]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-19 05:03:08,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:08,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:09,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:09,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:09,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:09,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:09,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 05:03:09,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 05:03:09,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 05:03:09,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 05:03:09,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (1/1) ... [2023-12-19 05:03:09,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 05:03:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 05:03:09,879 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) [2023-12-19 05:03:09,901 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 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-19 05:03:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-19 05:03:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-12-19 05:03:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-12-19 05:03:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2023-12-19 05:03:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2023-12-19 05:03:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2023-12-19 05:03:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#20 [2023-12-19 05:03:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#21 [2023-12-19 05:03:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#22 [2023-12-19 05:03:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#23 [2023-12-19 05:03:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#24 [2023-12-19 05:03:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#25 [2023-12-19 05:03:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 05:03:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2023-12-19 05:03:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2023-12-19 05:03:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2023-12-19 05:03:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2023-12-19 05:03:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 05:03:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 05:03:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 05:03:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 05:03:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 05:03:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 05:03:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 05:03:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 05:03:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 05:03:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 05:03:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 05:03:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#20 [2023-12-19 05:03:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#21 [2023-12-19 05:03:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#22 [2023-12-19 05:03:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#23 [2023-12-19 05:03:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#24 [2023-12-19 05:03:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#25 [2023-12-19 05:03:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 05:03:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 05:03:11,386 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 05:03:11,388 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 05:06:46,373 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 05:06:46,517 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 05:06:46,517 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 05:06:46,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:06:46 BoogieIcfgContainer [2023-12-19 05:06:46,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 05:06:46,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 05:06:46,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 05:06:46,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 05:06:46,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:03:00" (1/3) ... [2023-12-19 05:06:46,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af774a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:06:46, skipping insertion in model container [2023-12-19 05:06:46,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:04" (2/3) ... [2023-12-19 05:06:46,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af774a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:06:46, skipping insertion in model container [2023-12-19 05:06:46,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:06:46" (3/3) ... [2023-12-19 05:06:46,527 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12.c [2023-12-19 05:06:46,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 05:06:46,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 05:06:46,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 05:06:46,728 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f77e548, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 05:06:46,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 05:06:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 9308 states, 9203 states have (on average 1.5516679343692275) internal successors, (14280), 9205 states have internal predecessors, (14280), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 05:06:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 05:06:46,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:06:46,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:06:46,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:06:46,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:06:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1986984423, now seen corresponding path program 1 times [2023-12-19 05:06:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:06:46,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083554048] [2023-12-19 05:06:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:06:46,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:06:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:06:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:06:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:06:47,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083554048] [2023-12-19 05:06:47,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083554048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:06:47,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:06:47,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 05:06:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250522983] [2023-12-19 05:06:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:06:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 05:06:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:06:47,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 05:06:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 05:06:47,469 INFO L87 Difference]: Start difference. First operand has 9308 states, 9203 states have (on average 1.5516679343692275) internal successors, (14280), 9205 states have internal predecessors, (14280), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:06:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:06:48,021 INFO L93 Difference]: Finished difference Result 18517 states and 28866 transitions. [2023-12-19 05:06:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 05:06:48,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-19 05:06:48,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:06:48,078 INFO L225 Difference]: With dead ends: 18517 [2023-12-19 05:06:48,079 INFO L226 Difference]: Without dead ends: 9208 [2023-12-19 05:06:48,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 05:06:48,110 INFO L413 NwaCegarLoop]: 14269 mSDtfsCounter, 3 mSDsluCounter, 28530 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42799 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 05:06:48,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 42799 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 05:06:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9208 states. [2023-12-19 05:06:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9208 to 9207. [2023-12-19 05:06:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9207 states, 9105 states have (on average 1.556946732564525) internal successors, (14176), 9204 states have internal predecessors, (14176), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:06:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9207 states to 9207 states and 14276 transitions. [2023-12-19 05:06:48,413 INFO L78 Accepts]: Start accepts. Automaton has 9207 states and 14276 transitions. Word has length 38 [2023-12-19 05:06:48,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:06:48,413 INFO L495 AbstractCegarLoop]: Abstraction has 9207 states and 14276 transitions. [2023-12-19 05:06:48,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:06:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 9207 states and 14276 transitions. [2023-12-19 05:06:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 05:06:48,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:06:48,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:06:48,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 05:06:48,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:06:48,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:06:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash 965916069, now seen corresponding path program 1 times [2023-12-19 05:06:48,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:06:48,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399690808] [2023-12-19 05:06:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:06:48,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:06:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:06:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:06:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:06:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399690808] [2023-12-19 05:06:48,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399690808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:06:48,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:06:48,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 05:06:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408272959] [2023-12-19 05:06:48,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:06:48,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 05:06:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:06:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 05:06:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 05:06:48,701 INFO L87 Difference]: Start difference. First operand 9207 states and 14276 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:06:50,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:06:55,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:06:58,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:02,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:05,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:07:06,700 INFO L93 Difference]: Finished difference Result 27614 states and 42821 transitions. [2023-12-19 05:07:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 05:07:06,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-19 05:07:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:07:06,773 INFO L225 Difference]: With dead ends: 27614 [2023-12-19 05:07:06,774 INFO L226 Difference]: Without dead ends: 18408 [2023-12-19 05:07:06,795 INFO L412 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 [2023-12-19 05:07:06,798 INFO L413 NwaCegarLoop]: 15106 mSDtfsCounter, 14200 mSDsluCounter, 14187 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14200 SdHoareTripleChecker+Valid, 29293 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-12-19 05:07:06,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14200 Valid, 29293 Invalid, 143 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 2 Unknown, 0 Unchecked, 17.4s Time] [2023-12-19 05:07:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18408 states. [2023-12-19 05:07:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18408 to 18308. [2023-12-19 05:07:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18308 states, 18206 states have (on average 1.556739536416566) internal successors, (28342), 18305 states have internal predecessors, (28342), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:07:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18308 states to 18308 states and 28442 transitions. [2023-12-19 05:07:07,238 INFO L78 Accepts]: Start accepts. Automaton has 18308 states and 28442 transitions. Word has length 38 [2023-12-19 05:07:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:07:07,239 INFO L495 AbstractCegarLoop]: Abstraction has 18308 states and 28442 transitions. [2023-12-19 05:07:07,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:07:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 18308 states and 28442 transitions. [2023-12-19 05:07:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 05:07:07,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:07:07,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:07:07,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 05:07:07,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:07:07,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:07:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash -121300638, now seen corresponding path program 1 times [2023-12-19 05:07:07,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:07:07,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609558212] [2023-12-19 05:07:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:07:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:07:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:07:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:07:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:07:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609558212] [2023-12-19 05:07:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609558212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:07:07,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:07:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 05:07:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960270682] [2023-12-19 05:07:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:07:07,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 05:07:07,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:07:07,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 05:07:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 05:07:07,474 INFO L87 Difference]: Start difference. First operand 18308 states and 28442 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:07:11,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:15,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:19,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:23,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:28,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:32,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:36,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:37,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:41,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:45,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:49,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:51,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:55,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:07:59,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:00,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:04,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:11,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:08:12,432 INFO L93 Difference]: Finished difference Result 54488 states and 84654 transitions. [2023-12-19 05:08:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 05:08:12,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-19 05:08:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:08:12,525 INFO L225 Difference]: With dead ends: 54488 [2023-12-19 05:08:12,525 INFO L226 Difference]: Without dead ends: 36181 [2023-12-19 05:08:12,562 INFO L412 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 [2023-12-19 05:08:12,565 INFO L413 NwaCegarLoop]: 16565 mSDtfsCounter, 13842 mSDsluCounter, 14152 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 13 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13842 SdHoareTripleChecker+Valid, 30717 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.5s IncrementalHoareTripleChecker+Time [2023-12-19 05:08:12,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13842 Valid, 30717 Invalid, 176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 151 Invalid, 12 Unknown, 0 Unchecked, 64.5s Time] [2023-12-19 05:08:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36181 states. [2023-12-19 05:08:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36181 to 36081. [2023-12-19 05:08:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36081 states, 35979 states have (on average 1.5564356986019623) internal successors, (55999), 36078 states have internal predecessors, (55999), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:08:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36081 states to 36081 states and 56099 transitions. [2023-12-19 05:08:13,500 INFO L78 Accepts]: Start accepts. Automaton has 36081 states and 56099 transitions. Word has length 39 [2023-12-19 05:08:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:08:13,500 INFO L495 AbstractCegarLoop]: Abstraction has 36081 states and 56099 transitions. [2023-12-19 05:08:13,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:08:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 36081 states and 56099 transitions. [2023-12-19 05:08:13,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-19 05:08:13,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:08:13,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:08:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 05:08:13,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:08:13,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:08:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 534726509, now seen corresponding path program 1 times [2023-12-19 05:08:13,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:08:13,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299329276] [2023-12-19 05:08:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:08:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:08:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:08:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:08:13,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:08:13,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299329276] [2023-12-19 05:08:13,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299329276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:08:13,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:08:13,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 05:08:13,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497226968] [2023-12-19 05:08:13,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:08:13,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 05:08:13,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:08:13,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 05:08:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 05:08:13,696 INFO L87 Difference]: Start difference. First operand 36081 states and 56099 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:08:15,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:08:16,272 INFO L93 Difference]: Finished difference Result 108091 states and 168065 transitions. [2023-12-19 05:08:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 05:08:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-19 05:08:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:08:16,424 INFO L225 Difference]: With dead ends: 108091 [2023-12-19 05:08:16,424 INFO L226 Difference]: Without dead ends: 72011 [2023-12-19 05:08:16,472 INFO L412 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 [2023-12-19 05:08:16,474 INFO L413 NwaCegarLoop]: 14312 mSDtfsCounter, 14220 mSDsluCounter, 14183 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14220 SdHoareTripleChecker+Valid, 28495 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 05:08:16,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14220 Valid, 28495 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 05:08:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72011 states. [2023-12-19 05:08:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72011 to 71909. [2023-12-19 05:08:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71909 states, 71807 states have (on average 1.5563802971855112) internal successors, (111759), 71906 states have internal predecessors, (111759), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:08:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71909 states to 71909 states and 111859 transitions. [2023-12-19 05:08:17,865 INFO L78 Accepts]: Start accepts. Automaton has 71909 states and 111859 transitions. Word has length 40 [2023-12-19 05:08:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:08:17,868 INFO L495 AbstractCegarLoop]: Abstraction has 71909 states and 111859 transitions. [2023-12-19 05:08:17,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:08:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 71909 states and 111859 transitions. [2023-12-19 05:08:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-19 05:08:17,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:08:17,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:08:17,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 05:08:17,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:08:17,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:08:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1521364909, now seen corresponding path program 1 times [2023-12-19 05:08:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:08:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454804238] [2023-12-19 05:08:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:08:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:08:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:08:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:08:18,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:08:18,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454804238] [2023-12-19 05:08:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454804238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:08:18,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:08:18,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 05:08:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224745238] [2023-12-19 05:08:18,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:08:18,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 05:08:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:08:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 05:08:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 05:08:18,277 INFO L87 Difference]: Start difference. First operand 71909 states and 111859 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:08:21,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:23,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:27,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:32,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:33,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:37,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:42,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:43,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:47,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:51,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:54,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:08:59,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:03,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:07,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:11,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:14,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:18,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:20,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:21,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:25,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:29,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:33,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:37,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:43,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:47,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:51,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:09:55,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:00,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:02,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:06,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:10,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:14,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:16,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:20,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:22,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:24,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:26,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:28,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:32,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:35,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:44,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:48,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:52,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:10:58,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:02,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:07,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:08,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:12,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:13,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:16,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:21,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:25,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:27,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:30,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:32,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:35,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:39,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:43,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:44,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:47,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:49,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:53,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:11:57,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:01,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:06,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:10,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:14,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:15,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:17,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:23,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:27,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:30,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:34,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:38,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:40,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:45,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:50,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:54,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:12:58,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:03,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:06,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:09,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:11,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:13,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:15,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:19,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:20,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:25,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:29,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:31,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:33,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:36,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:41,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:45,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:46,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:50,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:13:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:13:50,347 INFO L93 Difference]: Finished difference Result 205525 states and 319795 transitions. [2023-12-19 05:13:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 05:13:50,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-19 05:13:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:13:50,967 INFO L225 Difference]: With dead ends: 205525 [2023-12-19 05:13:50,967 INFO L226 Difference]: Without dead ends: 133617 [2023-12-19 05:13:51,013 INFO L412 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 [2023-12-19 05:13:51,014 INFO L413 NwaCegarLoop]: 22204 mSDtfsCounter, 11556 mSDsluCounter, 12808 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 120 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 329.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11556 SdHoareTripleChecker+Valid, 35012 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.2s IncrementalHoareTripleChecker+Time [2023-12-19 05:13:51,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11556 Valid, 35012 Invalid, 2715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2548 Invalid, 47 Unknown, 0 Unchecked, 331.2s Time] [2023-12-19 05:13:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133617 states. [2023-12-19 05:13:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133617 to 131833. [2023-12-19 05:13:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131833 states, 131731 states have (on average 1.547023859228276) internal successors, (203791), 131830 states have internal predecessors, (203791), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:13:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131833 states to 131833 states and 203891 transitions. [2023-12-19 05:13:53,598 INFO L78 Accepts]: Start accepts. Automaton has 131833 states and 203891 transitions. Word has length 42 [2023-12-19 05:13:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:13:53,599 INFO L495 AbstractCegarLoop]: Abstraction has 131833 states and 203891 transitions. [2023-12-19 05:13:53,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:13:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 131833 states and 203891 transitions. [2023-12-19 05:13:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 05:13:53,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:13:53,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:13:53,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 05:13:53,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:13:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:13:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1211499940, now seen corresponding path program 1 times [2023-12-19 05:13:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:13:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510302852] [2023-12-19 05:13:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:13:53,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:13:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:13:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:13:53,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:13:53,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510302852] [2023-12-19 05:13:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510302852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:13:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:13:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 05:13:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747344735] [2023-12-19 05:13:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:13:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 05:13:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:13:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 05:13:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 05:13:53,942 INFO L87 Difference]: Start difference. First operand 131833 states and 203891 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:13:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:13:54,627 INFO L93 Difference]: Finished difference Result 131852 states and 203925 transitions. [2023-12-19 05:13:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 05:13:54,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-19 05:13:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:13:54,833 INFO L225 Difference]: With dead ends: 131852 [2023-12-19 05:13:54,833 INFO L226 Difference]: Without dead ends: 131849 [2023-12-19 05:13:54,864 INFO L412 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 [2023-12-19 05:13:54,864 INFO L413 NwaCegarLoop]: 14270 mSDtfsCounter, 0 mSDsluCounter, 14265 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28535 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 05:13:54,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28535 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 05:13:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131849 states. [2023-12-19 05:13:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131849 to 131849. [2023-12-19 05:13:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131849 states, 131747 states have (on average 1.546957425975544) internal successors, (203807), 131846 states have internal predecessors, (203807), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:13:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131849 states to 131849 states and 203907 transitions. [2023-12-19 05:13:56,939 INFO L78 Accepts]: Start accepts. Automaton has 131849 states and 203907 transitions. Word has length 59 [2023-12-19 05:13:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:13:56,939 INFO L495 AbstractCegarLoop]: Abstraction has 131849 states and 203907 transitions. [2023-12-19 05:13:56,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:13:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 131849 states and 203907 transitions. [2023-12-19 05:13:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 05:13:56,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:13:56,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:13:56,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 05:13:56,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:13:56,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:13:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1211440358, now seen corresponding path program 1 times [2023-12-19 05:13:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:13:56,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040047385] [2023-12-19 05:13:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:13:56,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:13:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:13:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:13:57,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:13:57,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040047385] [2023-12-19 05:13:57,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040047385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:13:57,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:13:57,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 05:13:57,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195391904] [2023-12-19 05:13:57,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:13:57,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 05:13:57,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:13:57,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 05:13:57,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 05:13:57,324 INFO L87 Difference]: Start difference. First operand 131849 states and 203907 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:13:59,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:03,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:04,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:07,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:11,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:14:14,235 INFO L93 Difference]: Finished difference Result 395560 states and 611742 transitions. [2023-12-19 05:14:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 05:14:14,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-19 05:14:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:14:15,049 INFO L225 Difference]: With dead ends: 395560 [2023-12-19 05:14:15,050 INFO L226 Difference]: Without dead ends: 263712 [2023-12-19 05:14:15,314 INFO L412 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 [2023-12-19 05:14:15,316 INFO L413 NwaCegarLoop]: 15944 mSDtfsCounter, 14172 mSDsluCounter, 30057 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14172 SdHoareTripleChecker+Valid, 46001 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-19 05:14:15,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14172 Valid, 46001 Invalid, 492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 486 Invalid, 2 Unknown, 0 Unchecked, 14.7s Time] [2023-12-19 05:14:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263712 states. [2023-12-19 05:14:17,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263712 to 263569. [2023-12-19 05:14:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263569 states, 263467 states have (on average 1.5467705632963522) internal successors, (407523), 263566 states have internal predecessors, (407523), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:14:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263569 states to 263569 states and 407623 transitions. [2023-12-19 05:14:19,036 INFO L78 Accepts]: Start accepts. Automaton has 263569 states and 407623 transitions. Word has length 59 [2023-12-19 05:14:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:14:19,036 INFO L495 AbstractCegarLoop]: Abstraction has 263569 states and 407623 transitions. [2023-12-19 05:14:19,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:14:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 263569 states and 407623 transitions. [2023-12-19 05:14:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 05:14:19,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:14:19,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:14:19,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 05:14:19,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:14:19,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:14:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash -376907544, now seen corresponding path program 1 times [2023-12-19 05:14:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:14:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269308273] [2023-12-19 05:14:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:14:19,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:14:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:14:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:14:19,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:14:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269308273] [2023-12-19 05:14:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269308273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:14:19,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:14:19,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 05:14:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233279939] [2023-12-19 05:14:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:14:19,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 05:14:19,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:14:19,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 05:14:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 05:14:19,515 INFO L87 Difference]: Start difference. First operand 263569 states and 407623 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:14:20,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:14:25,804 INFO L93 Difference]: Finished difference Result 790736 states and 1222914 transitions. [2023-12-19 05:14:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 05:14:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-19 05:14:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:14:26,659 INFO L225 Difference]: With dead ends: 790736 [2023-12-19 05:14:26,660 INFO L226 Difference]: Without dead ends: 527168 [2023-12-19 05:14:26,794 INFO L412 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 [2023-12-19 05:14:26,795 INFO L413 NwaCegarLoop]: 15453 mSDtfsCounter, 14204 mSDsluCounter, 29653 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14204 SdHoareTripleChecker+Valid, 45106 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 05:14:26,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14204 Valid, 45106 Invalid, 221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 05:14:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527168 states. [2023-12-19 05:14:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527168 to 527041. [2023-12-19 05:14:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527041 states, 526939 states have (on average 1.5466742829815217) internal successors, (815003), 527038 states have internal predecessors, (815003), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:14:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527041 states to 527041 states and 815103 transitions. [2023-12-19 05:14:35,761 INFO L78 Accepts]: Start accepts. Automaton has 527041 states and 815103 transitions. Word has length 59 [2023-12-19 05:14:35,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:14:35,761 INFO L495 AbstractCegarLoop]: Abstraction has 527041 states and 815103 transitions. [2023-12-19 05:14:35,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:14:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 527041 states and 815103 transitions. [2023-12-19 05:14:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 05:14:35,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:14:35,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:14:35,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 05:14:35,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:14:35,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:14:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash -769934554, now seen corresponding path program 1 times [2023-12-19 05:14:35,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:14:35,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057708952] [2023-12-19 05:14:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:14:35,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:14:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:14:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:14:36,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:14:36,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057708952] [2023-12-19 05:14:36,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057708952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:14:36,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:14:36,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 05:14:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616415054] [2023-12-19 05:14:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:14:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 05:14:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:14:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 05:14:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 05:14:36,188 INFO L87 Difference]: Start difference. First operand 527041 states and 815103 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:14:37,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:41,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:45,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:49,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:50,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:52,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:14:56,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:15:00,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:15:02,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:15:06,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:15:08,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:15:14,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 05:15:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 05:15:20,258 INFO L93 Difference]: Finished difference Result 1388040 states and 2148722 transitions. [2023-12-19 05:15:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 05:15:20,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-19 05:15:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 05:15:23,183 INFO L225 Difference]: With dead ends: 1388040 [2023-12-19 05:15:23,184 INFO L226 Difference]: Without dead ends: 861000 [2023-12-19 05:15:23,565 INFO L412 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 [2023-12-19 05:15:23,566 INFO L413 NwaCegarLoop]: 17591 mSDtfsCounter, 14164 mSDsluCounter, 31755 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14164 SdHoareTripleChecker+Valid, 49346 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2023-12-19 05:15:23,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14164 Valid, 49346 Invalid, 339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 6 Unknown, 0 Unchecked, 38.3s Time] [2023-12-19 05:15:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861000 states. [2023-12-19 05:15:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861000 to 860897. [2023-12-19 05:15:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860897 states, 860795 states have (on average 1.5490087651531432) internal successors, (1333379), 860894 states have internal predecessors, (1333379), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:15:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860897 states to 860897 states and 1333479 transitions. [2023-12-19 05:15:41,827 INFO L78 Accepts]: Start accepts. Automaton has 860897 states and 1333479 transitions. Word has length 59 [2023-12-19 05:15:41,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 05:15:41,828 INFO L495 AbstractCegarLoop]: Abstraction has 860897 states and 1333479 transitions. [2023-12-19 05:15:41,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 05:15:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 860897 states and 1333479 transitions. [2023-12-19 05:15:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 05:15:41,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 05:15:41,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 05:15:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 05:15:41,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 05:15:41,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 05:15:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash 583342598, now seen corresponding path program 1 times [2023-12-19 05:15:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 05:15:41,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924297406] [2023-12-19 05:15:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:15:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 05:15:41,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 05:15:41,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788044726] [2023-12-19 05:15:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 05:15:41,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 05:15:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 05:15:41,953 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) [2023-12-19 05:15:41,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 05:15:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 05:15:44,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 05:15:44,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 05:15:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 05:15:44,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 05:15:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 05:15:44,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924297406] [2023-12-19 05:15:44,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 05:15:44,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788044726] [2023-12-19 05:15:44,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788044726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 05:15:44,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 05:15:44,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 05:15:44,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242290476] [2023-12-19 05:15:44,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 05:15:44,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 05:15:44,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 05:15:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 05:15:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 05:15:44,320 INFO L87 Difference]: Start difference. First operand 860897 states and 1333479 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)