/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/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 15:41:43,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 15:41:43,995 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 15:41:44,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 15:41:44,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 15:41:44,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 15:41:44,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 15:41:44,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 15:41:44,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 15:41:44,028 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 15:41:44,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 15:41:44,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 15:41:44,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 15:41:44,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 15:41:44,031 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 15:41:44,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 15:41:44,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 15:41:44,032 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 15:41:44,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 15:41:44,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 15:41:44,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 15:41:44,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 15:41:44,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 15:41:44,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 15:41:44,034 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 15:41:44,034 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 15:41:44,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 15:41:44,035 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 15:41:44,035 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 15:41:44,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 15:41:44,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 15:41:44,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 15:41:44,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:41:44,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 15:41:44,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 15:41:44,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 15:41:44,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 15:41:44,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 15:41:44,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 15:41:44,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 15:41:44,039 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 15:41:44,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 15:41:44,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 15:41:44,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 15:41:44,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 15:41:44,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 15:41:44,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 15:41:44,294 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 15:41:44,294 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 15:41:44,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i [2023-12-19 15:41:45,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 15:41:45,632 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 15:41:45,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i [2023-12-19 15:41:45,640 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d303ead5/3392730c70f94189b8ce456d79203a5d/FLAG686de5c01 [2023-12-19 15:41:45,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d303ead5/3392730c70f94189b8ce456d79203a5d [2023-12-19 15:41:45,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 15:41:45,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 15:41:45,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 15:41:45,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 15:41:45,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 15:41:45,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:41:45" (1/1) ... [2023-12-19 15:41:45,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b60d05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:45, skipping insertion in model container [2023-12-19 15:41:45,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:41:45" (1/1) ... [2023-12-19 15:41:45,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 15:41:45,855 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i[916,929] [2023-12-19 15:41:45,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:41:45,948 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 15:41:45,961 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i[916,929] [2023-12-19 15:41:46,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:41:46,035 INFO L206 MainTranslator]: Completed translation [2023-12-19 15:41:46,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46 WrapperNode [2023-12-19 15:41:46,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 15:41:46,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 15:41:46,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 15:41:46,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 15:41:46,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,113 INFO L138 Inliner]: procedures = 26, calls = 190, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 561 [2023-12-19 15:41:46,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 15:41:46,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 15:41:46,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 15:41:46,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 15:41:46,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,167 INFO L175 MemorySlicer]: Split 139 memory accesses to 18 slices as follows [2, 7, 15, 14, 5, 8, 10, 6, 8, 5, 6, 6, 6, 9, 10, 6, 9, 7]. 11 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 22 writes are split as follows [0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 3, 1]. [2023-12-19 15:41:46,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 15:41:46,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 15:41:46,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 15:41:46,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 15:41:46,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (1/1) ... [2023-12-19 15:41:46,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:41:46,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:46,256 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 15:41:46,259 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 15:41:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 15:41:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 15:41:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 15:41:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 15:41:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-19 15:41:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-19 15:41:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-19 15:41:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-19 15:41:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-19 15:41:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-19 15:41:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-19 15:41:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-19 15:41:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-19 15:41:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-19 15:41:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 15:41:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 15:41:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-19 15:41:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-19 15:41:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-19 15:41:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-19 15:41:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2023-12-19 15:41:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 15:41:46,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 15:41:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 15:41:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 15:41:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 15:41:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 15:41:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 15:41:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 15:41:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 15:41:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 15:41:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 15:41:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 15:41:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 15:41:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 15:41:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 15:41:46,485 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 15:41:46,488 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 15:41:46,951 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 15:41:46,980 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 15:41:46,981 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 15:41:46,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:41:46 BoogieIcfgContainer [2023-12-19 15:41:46,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 15:41:46,983 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 15:41:46,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 15:41:46,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 15:41:46,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:41:45" (1/3) ... [2023-12-19 15:41:46,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37235f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:41:46, skipping insertion in model container [2023-12-19 15:41:46,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:41:46" (2/3) ... [2023-12-19 15:41:46,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37235f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:41:46, skipping insertion in model container [2023-12-19 15:41:46,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:41:46" (3/3) ... [2023-12-19 15:41:46,988 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-85.i [2023-12-19 15:41:47,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 15:41:47,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 15:41:47,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 15:41:47,047 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;@1ec8736f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 15:41:47,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 15:41:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 99 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:41:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 15:41:47,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:47,064 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:47,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:47,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:47,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1189087437, now seen corresponding path program 1 times [2023-12-19 15:41:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:47,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721405907] [2023-12-19 15:41:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:47,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:47,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:47,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721405907] [2023-12-19 15:41:47,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 15:41:47,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384445708] [2023-12-19 15:41:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:47,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:47,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:47,345 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 15:41:47,348 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 15:41:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:47,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 15:41:47,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-12-19 15:41:47,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:41:47,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384445708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:41:47,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:41:47,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 15:41:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793620030] [2023-12-19 15:41:47,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:47,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 15:41:47,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 15:41:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:41:47,766 INFO L87 Difference]: Start difference. First operand has 124 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 99 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-19 15:41:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:47,824 INFO L93 Difference]: Finished difference Result 245 states and 389 transitions. [2023-12-19 15:41:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 15:41:47,827 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 174 [2023-12-19 15:41:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:47,836 INFO L225 Difference]: With dead ends: 245 [2023-12-19 15:41:47,836 INFO L226 Difference]: Without dead ends: 122 [2023-12-19 15:41:47,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:41:47,846 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:47,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:41:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-19 15:41:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-19 15:41:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 97 states have (on average 1.3711340206185567) internal successors, (133), 97 states have internal predecessors, (133), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:41:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 179 transitions. [2023-12-19 15:41:47,886 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 179 transitions. Word has length 174 [2023-12-19 15:41:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:47,886 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 179 transitions. [2023-12-19 15:41:47,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-19 15:41:47,887 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 179 transitions. [2023-12-19 15:41:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 15:41:47,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:47,928 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:47,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:48,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 15:41:48,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:48,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1729199905, now seen corresponding path program 1 times [2023-12-19 15:41:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136270014] [2023-12-19 15:41:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:48,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:48,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094145321] [2023-12-19 15:41:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:48,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:48,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:48,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:48,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 15:41:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:48,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 15:41:48,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:48,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-19 15:41:48,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:41:48,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-19 15:41:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:48,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:41:48,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:48,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136270014] [2023-12-19 15:41:48,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:48,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094145321] [2023-12-19 15:41:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094145321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:41:48,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:41:48,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:41:48,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150310544] [2023-12-19 15:41:48,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:48,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:41:48,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:41:48,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:41:48,805 INFO L87 Difference]: Start difference. First operand 122 states and 179 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:49,087 INFO L93 Difference]: Finished difference Result 523 states and 766 transitions. [2023-12-19 15:41:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:41:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2023-12-19 15:41:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:49,095 INFO L225 Difference]: With dead ends: 523 [2023-12-19 15:41:49,095 INFO L226 Difference]: Without dead ends: 402 [2023-12-19 15:41:49,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:41:49,098 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 535 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:49,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 918 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:41:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-19 15:41:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 197. [2023-12-19 15:41:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 169 states have (on average 1.4142011834319526) internal successors, (239), 170 states have internal predecessors, (239), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:41:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 289 transitions. [2023-12-19 15:41:49,146 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 289 transitions. Word has length 174 [2023-12-19 15:41:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:49,147 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 289 transitions. [2023-12-19 15:41:49,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 289 transitions. [2023-12-19 15:41:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 15:41:49,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:49,149 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:49,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:49,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 15:41:49,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:49,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1857363672, now seen corresponding path program 1 times [2023-12-19 15:41:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538390592] [2023-12-19 15:41:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:49,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:49,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016060431] [2023-12-19 15:41:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:49,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:49,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:49,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:49,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 15:41:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:49,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 15:41:49,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:49,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-19 15:41:49,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:41:49,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-19 15:41:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:49,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:41:49,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:49,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538390592] [2023-12-19 15:41:49,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:49,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016060431] [2023-12-19 15:41:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016060431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:41:49,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:41:49,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:41:49,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147381899] [2023-12-19 15:41:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:49,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:41:49,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:41:49,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:41:49,779 INFO L87 Difference]: Start difference. First operand 197 states and 289 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:49,966 INFO L93 Difference]: Finished difference Result 529 states and 771 transitions. [2023-12-19 15:41:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:41:49,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2023-12-19 15:41:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:49,973 INFO L225 Difference]: With dead ends: 529 [2023-12-19 15:41:49,973 INFO L226 Difference]: Without dead ends: 333 [2023-12-19 15:41:49,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:41:49,982 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 372 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:49,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 825 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:41:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-19 15:41:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 196. [2023-12-19 15:41:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 168 states have (on average 1.4047619047619047) internal successors, (236), 169 states have internal predecessors, (236), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:41:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2023-12-19 15:41:50,002 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 174 [2023-12-19 15:41:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:50,003 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2023-12-19 15:41:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2023-12-19 15:41:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 15:41:50,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:50,009 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:50,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:50,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:50,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:50,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:50,217 INFO L85 PathProgramCache]: Analyzing trace with hash 326134607, now seen corresponding path program 1 times [2023-12-19 15:41:50,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:50,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006934292] [2023-12-19 15:41:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:50,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:50,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614600969] [2023-12-19 15:41:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:50,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:50,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:50,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 15:41:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:50,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:41:50,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:50,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-19 15:41:50,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-19 15:41:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:50,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:41:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006934292] [2023-12-19 15:41:50,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614600969] [2023-12-19 15:41:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614600969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:41:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:41:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:41:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883455796] [2023-12-19 15:41:50,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:50,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:41:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:50,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:41:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:41:50,551 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:50,736 INFO L93 Difference]: Finished difference Result 684 states and 999 transitions. [2023-12-19 15:41:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:41:50,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-19 15:41:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:50,740 INFO L225 Difference]: With dead ends: 684 [2023-12-19 15:41:50,740 INFO L226 Difference]: Without dead ends: 489 [2023-12-19 15:41:50,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:41:50,741 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 298 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:50,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 700 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:41:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-19 15:41:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 207. [2023-12-19 15:41:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 179 states have (on average 1.3910614525139664) internal successors, (249), 180 states have internal predecessors, (249), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:41:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2023-12-19 15:41:50,755 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 175 [2023-12-19 15:41:50,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:50,756 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2023-12-19 15:41:50,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:50,756 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2023-12-19 15:41:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 15:41:50,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:50,758 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:50,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:50,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:50,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:50,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash -953729071, now seen corresponding path program 1 times [2023-12-19 15:41:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:50,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608156208] [2023-12-19 15:41:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:50,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:51,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040718279] [2023-12-19 15:41:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:51,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:51,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:51,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 15:41:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:51,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 15:41:51,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:51,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-19 15:41:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:41:51,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:41:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:51,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:51,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608156208] [2023-12-19 15:41:51,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:51,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040718279] [2023-12-19 15:41:51,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040718279] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:41:51,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:41:51,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2023-12-19 15:41:51,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996351765] [2023-12-19 15:41:51,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:51,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:41:51,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:51,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:41:51,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:41:51,403 INFO L87 Difference]: Start difference. First operand 207 states and 299 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:51,556 INFO L93 Difference]: Finished difference Result 671 states and 975 transitions. [2023-12-19 15:41:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:41:51,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-19 15:41:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:51,559 INFO L225 Difference]: With dead ends: 671 [2023-12-19 15:41:51,559 INFO L226 Difference]: Without dead ends: 465 [2023-12-19 15:41:51,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-12-19 15:41:51,561 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 348 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:51,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 2244 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:41:51,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-19 15:41:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 213. [2023-12-19 15:41:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 186 states have internal predecessors, (255), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:41:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 305 transitions. [2023-12-19 15:41:51,573 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 305 transitions. Word has length 175 [2023-12-19 15:41:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:51,573 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 305 transitions. [2023-12-19 15:41:51,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 305 transitions. [2023-12-19 15:41:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 15:41:51,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:51,576 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:51,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:51,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:51,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:51,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2015078349, now seen corresponding path program 1 times [2023-12-19 15:41:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035808003] [2023-12-19 15:41:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:51,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:51,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417317737] [2023-12-19 15:41:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:51,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:51,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 15:41:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:52,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 15:41:52,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:52,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-19 15:41:52,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-19 15:41:52,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-19 15:41:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:41:52,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:41:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:52,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:52,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035808003] [2023-12-19 15:41:52,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417317737] [2023-12-19 15:41:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417317737] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:41:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:41:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 11 [2023-12-19 15:41:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339688110] [2023-12-19 15:41:52,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:52,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:41:52,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:41:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:41:52,211 INFO L87 Difference]: Start difference. First operand 213 states and 305 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:52,580 INFO L93 Difference]: Finished difference Result 713 states and 1032 transitions. [2023-12-19 15:41:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:41:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-19 15:41:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:52,583 INFO L225 Difference]: With dead ends: 713 [2023-12-19 15:41:52,583 INFO L226 Difference]: Without dead ends: 501 [2023-12-19 15:41:52,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:41:52,585 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 375 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:52,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1712 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:41:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-19 15:41:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 219. [2023-12-19 15:41:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 191 states have (on average 1.387434554973822) internal successors, (265), 192 states have internal predecessors, (265), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:41:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 315 transitions. [2023-12-19 15:41:52,597 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 315 transitions. Word has length 175 [2023-12-19 15:41:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:52,597 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 315 transitions. [2023-12-19 15:41:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 315 transitions. [2023-12-19 15:41:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 15:41:52,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:52,600 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:52,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:52,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:52,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:52,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 735214671, now seen corresponding path program 1 times [2023-12-19 15:41:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:52,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489360490] [2023-12-19 15:41:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:52,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:52,843 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13844601] [2023-12-19 15:41:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:52,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:52,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:52,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:52,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 15:41:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:53,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:41:53,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:53,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-19 15:41:53,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-19 15:41:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:53,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:41:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489360490] [2023-12-19 15:41:53,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13844601] [2023-12-19 15:41:53,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13844601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:41:53,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:41:53,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:41:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170439638] [2023-12-19 15:41:53,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:53,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:41:53,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:41:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:41:53,122 INFO L87 Difference]: Start difference. First operand 219 states and 315 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:53,318 INFO L93 Difference]: Finished difference Result 719 states and 1040 transitions. [2023-12-19 15:41:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:41:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-19 15:41:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:53,321 INFO L225 Difference]: With dead ends: 719 [2023-12-19 15:41:53,321 INFO L226 Difference]: Without dead ends: 501 [2023-12-19 15:41:53,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:41:53,322 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 217 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:53,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1200 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:41:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-19 15:41:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 219. [2023-12-19 15:41:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 191 states have (on average 1.3769633507853403) internal successors, (263), 192 states have internal predecessors, (263), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:41:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 313 transitions. [2023-12-19 15:41:53,334 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 313 transitions. Word has length 175 [2023-12-19 15:41:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:53,335 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 313 transitions. [2023-12-19 15:41:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 313 transitions. [2023-12-19 15:41:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 15:41:53,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:53,337 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:53,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:53,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:53,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:53,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash -447418871, now seen corresponding path program 1 times [2023-12-19 15:41:53,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:53,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532982157] [2023-12-19 15:41:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:53,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675426268] [2023-12-19 15:41:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:53,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:53,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 15:41:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:53,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 15:41:53,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:53,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:41:54,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-19 15:41:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 19 proven. 297 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2023-12-19 15:41:54,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:41:54,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-19 15:41:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:41:54,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532982157] [2023-12-19 15:41:54,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675426268] [2023-12-19 15:41:54,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675426268] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:41:54,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:41:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-19 15:41:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610078783] [2023-12-19 15:41:54,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:41:54,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 15:41:54,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:54,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 15:41:54,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:41:54,560 INFO L87 Difference]: Start difference. First operand 219 states and 313 transitions. Second operand has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:41:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:54,903 INFO L93 Difference]: Finished difference Result 358 states and 510 transitions. [2023-12-19 15:41:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:41:54,904 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) Word has length 175 [2023-12-19 15:41:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:54,905 INFO L225 Difference]: With dead ends: 358 [2023-12-19 15:41:54,905 INFO L226 Difference]: Without dead ends: 140 [2023-12-19 15:41:54,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2023-12-19 15:41:54,906 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 572 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:54,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 634 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:41:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-19 15:41:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2023-12-19 15:41:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 110 states have internal predecessors, (147), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:41:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 193 transitions. [2023-12-19 15:41:54,912 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 193 transitions. Word has length 175 [2023-12-19 15:41:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:54,913 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 193 transitions. [2023-12-19 15:41:54,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:41:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 193 transitions. [2023-12-19 15:41:54,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 15:41:54,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:54,914 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:54,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:55,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 15:41:55,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:55,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:55,122 INFO L85 PathProgramCache]: Analyzing trace with hash -68421563, now seen corresponding path program 1 times [2023-12-19 15:41:55,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:55,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595524081] [2023-12-19 15:41:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:55,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:55,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697281301] [2023-12-19 15:41:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:55,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:55,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:55,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:55,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 15:41:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:55,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 15:41:55,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:55,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:41:55,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-19 15:41:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 17 proven. 411 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-12-19 15:41:55,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:41:56,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-19 15:41:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:41:56,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:56,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595524081] [2023-12-19 15:41:56,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:56,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697281301] [2023-12-19 15:41:56,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697281301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:41:56,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:41:56,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-19 15:41:56,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012754265] [2023-12-19 15:41:56,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:41:56,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 15:41:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 15:41:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:41:56,101 INFO L87 Difference]: Start difference. First operand 136 states and 193 transitions. Second operand has 15 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:41:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:56,456 INFO L93 Difference]: Finished difference Result 281 states and 394 transitions. [2023-12-19 15:41:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:41:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) Word has length 176 [2023-12-19 15:41:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:56,458 INFO L225 Difference]: With dead ends: 281 [2023-12-19 15:41:56,458 INFO L226 Difference]: Without dead ends: 146 [2023-12-19 15:41:56,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2023-12-19 15:41:56,459 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 560 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:56,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 622 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:41:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-19 15:41:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2023-12-19 15:41:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 113 states have internal predecessors, (149), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:41:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 195 transitions. [2023-12-19 15:41:56,467 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 195 transitions. Word has length 176 [2023-12-19 15:41:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:56,467 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 195 transitions. [2023-12-19 15:41:56,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:41:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 195 transitions. [2023-12-19 15:41:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 15:41:56,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:56,469 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:56,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:56,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:56,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:56,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash 206338051, now seen corresponding path program 1 times [2023-12-19 15:41:56,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:56,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902080968] [2023-12-19 15:41:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:56,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:56,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:56,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366828594] [2023-12-19 15:41:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:56,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:56,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:56,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:56,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 15:41:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:56,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 15:41:56,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:57,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:41:57,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-19 15:41:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 493 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-19 15:41:57,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:41:57,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-19 15:41:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 21 proven. 45 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:41:57,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902080968] [2023-12-19 15:41:57,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366828594] [2023-12-19 15:41:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366828594] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:41:57,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:41:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2023-12-19 15:41:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415119272] [2023-12-19 15:41:57,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:41:57,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 15:41:57,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 15:41:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:41:57,768 INFO L87 Difference]: Start difference. First operand 140 states and 195 transitions. Second operand has 17 states, 15 states have (on average 7.066666666666666) internal successors, (106), 16 states have internal predecessors, (106), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:41:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:58,198 INFO L93 Difference]: Finished difference Result 291 states and 400 transitions. [2023-12-19 15:41:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 15:41:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 7.066666666666666) internal successors, (106), 16 states have internal predecessors, (106), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) Word has length 176 [2023-12-19 15:41:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:58,200 INFO L225 Difference]: With dead ends: 291 [2023-12-19 15:41:58,200 INFO L226 Difference]: Without dead ends: 152 [2023-12-19 15:41:58,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=605, Unknown=0, NotChecked=0, Total=812 [2023-12-19 15:41:58,201 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 559 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:58,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 902 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:41:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-19 15:41:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2023-12-19 15:41:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 116 states have (on average 1.3017241379310345) internal successors, (151), 116 states have internal predecessors, (151), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:41:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 197 transitions. [2023-12-19 15:41:58,211 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 197 transitions. Word has length 176 [2023-12-19 15:41:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:58,212 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 197 transitions. [2023-12-19 15:41:58,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 7.066666666666666) internal successors, (106), 16 states have internal predecessors, (106), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:41:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 197 transitions. [2023-12-19 15:41:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 15:41:58,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:58,213 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:58,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:58,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 15:41:58,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:58,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1592541445, now seen corresponding path program 1 times [2023-12-19 15:41:58,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:58,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414959977] [2023-12-19 15:41:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:58,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:58,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:58,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662523520] [2023-12-19 15:41:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:58,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:58,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:58,447 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:58,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 15:41:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:58,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 15:41:58,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:58,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-19 15:41:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:41:58,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:41:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:58,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:58,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414959977] [2023-12-19 15:41:58,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:58,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662523520] [2023-12-19 15:41:58,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662523520] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:41:58,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:41:58,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2023-12-19 15:41:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126906220] [2023-12-19 15:41:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:58,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:41:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:58,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:41:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:41:58,811 INFO L87 Difference]: Start difference. First operand 144 states and 197 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:58,954 INFO L93 Difference]: Finished difference Result 434 states and 599 transitions. [2023-12-19 15:41:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:41:58,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-19 15:41:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:58,956 INFO L225 Difference]: With dead ends: 434 [2023-12-19 15:41:58,956 INFO L226 Difference]: Without dead ends: 291 [2023-12-19 15:41:58,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:41:58,957 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 274 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:58,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1189 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:41:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-19 15:41:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 148. [2023-12-19 15:41:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 120 states have internal predecessors, (157), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:41:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 203 transitions. [2023-12-19 15:41:58,971 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 203 transitions. Word has length 176 [2023-12-19 15:41:58,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:58,971 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 203 transitions. [2023-12-19 15:41:58,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 203 transitions. [2023-12-19 15:41:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 15:41:58,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:58,973 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:58,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 15:41:59,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 15:41:59,181 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:59,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash 312677767, now seen corresponding path program 1 times [2023-12-19 15:41:59,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:59,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466679015] [2023-12-19 15:41:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:59,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:59,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:59,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943740043] [2023-12-19 15:41:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:59,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:59,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:59,224 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:59,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 15:41:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:41:59,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 15:41:59,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:41:59,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-19 15:41:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:41:59,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:41:59,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:41:59,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466679015] [2023-12-19 15:41:59,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:41:59,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943740043] [2023-12-19 15:41:59,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943740043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:41:59,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:41:59,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:41:59,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912058794] [2023-12-19 15:41:59,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:41:59,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:41:59,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:41:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:41:59,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:41:59,513 INFO L87 Difference]: Start difference. First operand 148 states and 203 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:41:59,652 INFO L93 Difference]: Finished difference Result 478 states and 661 transitions. [2023-12-19 15:41:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:41:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-19 15:41:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:41:59,654 INFO L225 Difference]: With dead ends: 478 [2023-12-19 15:41:59,654 INFO L226 Difference]: Without dead ends: 331 [2023-12-19 15:41:59,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:41:59,655 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 221 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:41:59,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1023 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:41:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-19 15:41:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 148. [2023-12-19 15:41:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 120 states have (on average 1.3) internal successors, (156), 120 states have internal predecessors, (156), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:41:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2023-12-19 15:41:59,680 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 176 [2023-12-19 15:41:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:41:59,680 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2023-12-19 15:41:59,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:41:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2023-12-19 15:41:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 15:41:59,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:41:59,683 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:59,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 15:41:59,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 15:41:59,889 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:41:59,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:41:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1464377678, now seen corresponding path program 1 times [2023-12-19 15:41:59,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:41:59,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330381533] [2023-12-19 15:41:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:59,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:41:59,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:41:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733018058] [2023-12-19 15:41:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:41:59,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:41:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:41:59,931 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:41:59,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 15:42:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:00,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 15:42:00,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:00,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-19 15:42:00,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-19 15:42:00,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 15:42:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:00,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330381533] [2023-12-19 15:42:00,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733018058] [2023-12-19 15:42:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733018058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:00,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:42:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143712205] [2023-12-19 15:42:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:00,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:42:00,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:42:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:00,280 INFO L87 Difference]: Start difference. First operand 148 states and 202 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:00,453 INFO L93 Difference]: Finished difference Result 481 states and 657 transitions. [2023-12-19 15:42:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:42:00,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-19 15:42:00,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:00,455 INFO L225 Difference]: With dead ends: 481 [2023-12-19 15:42:00,456 INFO L226 Difference]: Without dead ends: 334 [2023-12-19 15:42:00,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:42:00,457 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 442 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:00,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1091 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-19 15:42:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 161. [2023-12-19 15:42:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 132 states have (on average 1.2954545454545454) internal successors, (171), 132 states have internal predecessors, (171), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2023-12-19 15:42:00,478 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 176 [2023-12-19 15:42:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:00,478 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2023-12-19 15:42:00,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2023-12-19 15:42:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 15:42:00,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:00,479 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:00,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 15:42:00,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:00,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash -401603261, now seen corresponding path program 1 times [2023-12-19 15:42:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680228134] [2023-12-19 15:42:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:00,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:00,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389472191] [2023-12-19 15:42:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:00,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:00,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:00,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:00,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 15:42:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:00,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 15:42:00,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:01,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 15:42:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:01,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680228134] [2023-12-19 15:42:01,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389472191] [2023-12-19 15:42:01,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389472191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:01,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:01,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135563705] [2023-12-19 15:42:01,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:01,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:01,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:01,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:01,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:01,020 INFO L87 Difference]: Start difference. First operand 161 states and 217 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:01,144 INFO L93 Difference]: Finished difference Result 512 states and 698 transitions. [2023-12-19 15:42:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:42:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-19 15:42:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:01,147 INFO L225 Difference]: With dead ends: 512 [2023-12-19 15:42:01,147 INFO L226 Difference]: Without dead ends: 352 [2023-12-19 15:42:01,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:01,148 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 302 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:01,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 750 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-19 15:42:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 164. [2023-12-19 15:42:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 135 states have (on average 1.288888888888889) internal successors, (174), 135 states have internal predecessors, (174), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 220 transitions. [2023-12-19 15:42:01,166 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 220 transitions. Word has length 176 [2023-12-19 15:42:01,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:01,166 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 220 transitions. [2023-12-19 15:42:01,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 220 transitions. [2023-12-19 15:42:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 15:42:01,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:01,168 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:01,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:01,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:01,375 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:01,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:01,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1681466939, now seen corresponding path program 1 times [2023-12-19 15:42:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:01,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984769343] [2023-12-19 15:42:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:01,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:01,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503551198] [2023-12-19 15:42:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:01,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:01,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:01,404 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:01,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 15:42:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:01,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 15:42:01,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:01,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-19 15:42:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:01,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:01,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984769343] [2023-12-19 15:42:01,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503551198] [2023-12-19 15:42:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503551198] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:42:01,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:42:01,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2023-12-19 15:42:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942576677] [2023-12-19 15:42:01,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:01,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:42:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:01,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:42:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:42:01,842 INFO L87 Difference]: Start difference. First operand 164 states and 220 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:01,978 INFO L93 Difference]: Finished difference Result 474 states and 642 transitions. [2023-12-19 15:42:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:42:01,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-19 15:42:01,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:01,980 INFO L225 Difference]: With dead ends: 474 [2023-12-19 15:42:01,980 INFO L226 Difference]: Without dead ends: 311 [2023-12-19 15:42:01,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:42:01,981 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 257 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:01,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1417 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-19 15:42:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 164. [2023-12-19 15:42:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 135 states have (on average 1.288888888888889) internal successors, (174), 135 states have internal predecessors, (174), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 220 transitions. [2023-12-19 15:42:01,999 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 220 transitions. Word has length 176 [2023-12-19 15:42:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:02,000 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 220 transitions. [2023-12-19 15:42:02,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 220 transitions. [2023-12-19 15:42:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 15:42:02,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:02,001 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:02,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 15:42:02,209 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:02,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 349065120, now seen corresponding path program 1 times [2023-12-19 15:42:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402860682] [2023-12-19 15:42:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:02,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:02,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062443728] [2023-12-19 15:42:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:02,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:02,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:02,237 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:02,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 15:42:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:02,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 15:42:02,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:02,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-19 15:42:02,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-19 15:42:02,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 15:42:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:02,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:02,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:02,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402860682] [2023-12-19 15:42:02,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:02,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062443728] [2023-12-19 15:42:02,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062443728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:02,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:02,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:42:02,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786409779] [2023-12-19 15:42:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:42:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:02,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:42:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:02,552 INFO L87 Difference]: Start difference. First operand 164 states and 220 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:02,723 INFO L93 Difference]: Finished difference Result 452 states and 606 transitions. [2023-12-19 15:42:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:42:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 177 [2023-12-19 15:42:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:02,725 INFO L225 Difference]: With dead ends: 452 [2023-12-19 15:42:02,725 INFO L226 Difference]: Without dead ends: 289 [2023-12-19 15:42:02,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:42:02,726 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 274 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:02,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1179 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-19 15:42:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 160. [2023-12-19 15:42:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 131 states have (on average 1.282442748091603) internal successors, (168), 131 states have internal predecessors, (168), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 214 transitions. [2023-12-19 15:42:02,760 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 214 transitions. Word has length 177 [2023-12-19 15:42:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:02,760 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 214 transitions. [2023-12-19 15:42:02,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 214 transitions. [2023-12-19 15:42:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 15:42:02,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:02,761 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:02,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:02,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 15:42:02,969 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:02,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash -680815892, now seen corresponding path program 1 times [2023-12-19 15:42:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:02,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67201866] [2023-12-19 15:42:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:02,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558272664] [2023-12-19 15:42:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:02,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:02,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:02,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:03,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 15:42:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:03,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:42:03,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:03,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-19 15:42:03,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:03,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 15:42:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:03,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:03,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67201866] [2023-12-19 15:42:03,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558272664] [2023-12-19 15:42:03,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558272664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:03,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:03,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:03,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502391687] [2023-12-19 15:42:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:03,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:03,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:03,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:03,342 INFO L87 Difference]: Start difference. First operand 160 states and 214 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:03,491 INFO L93 Difference]: Finished difference Result 475 states and 641 transitions. [2023-12-19 15:42:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:42:03,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 177 [2023-12-19 15:42:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:03,494 INFO L225 Difference]: With dead ends: 475 [2023-12-19 15:42:03,494 INFO L226 Difference]: Without dead ends: 316 [2023-12-19 15:42:03,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:03,495 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 227 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:03,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 984 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-19 15:42:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 153. [2023-12-19 15:42:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 124 states have (on average 1.2661290322580645) internal successors, (157), 124 states have internal predecessors, (157), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 203 transitions. [2023-12-19 15:42:03,513 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 203 transitions. Word has length 177 [2023-12-19 15:42:03,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:03,513 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 203 transitions. [2023-12-19 15:42:03,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 203 transitions. [2023-12-19 15:42:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 15:42:03,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:03,515 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:03,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 15:42:03,723 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:03,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1727426110, now seen corresponding path program 1 times [2023-12-19 15:42:03,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:03,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642008860] [2023-12-19 15:42:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:03,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858964870] [2023-12-19 15:42:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:03,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:03,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:03,752 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:03,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 15:42:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:04,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:42:04,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:04,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-19 15:42:04,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:04,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-19 15:42:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:04,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:04,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642008860] [2023-12-19 15:42:04,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858964870] [2023-12-19 15:42:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858964870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:04,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785380560] [2023-12-19 15:42:04,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:04,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:04,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:04,049 INFO L87 Difference]: Start difference. First operand 153 states and 203 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:04,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:04,215 INFO L93 Difference]: Finished difference Result 427 states and 568 transitions. [2023-12-19 15:42:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:42:04,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 178 [2023-12-19 15:42:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:04,218 INFO L225 Difference]: With dead ends: 427 [2023-12-19 15:42:04,218 INFO L226 Difference]: Without dead ends: 275 [2023-12-19 15:42:04,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:04,219 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 213 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:04,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 697 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-19 15:42:04,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 149. [2023-12-19 15:42:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 120 states have (on average 1.2416666666666667) internal successors, (149), 120 states have internal predecessors, (149), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2023-12-19 15:42:04,238 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 178 [2023-12-19 15:42:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:04,239 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2023-12-19 15:42:04,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2023-12-19 15:42:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-19 15:42:04,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:04,240 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:04,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:04,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 15:42:04,448 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:04,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1813696204, now seen corresponding path program 1 times [2023-12-19 15:42:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:04,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644196548] [2023-12-19 15:42:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:04,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:04,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:04,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41259333] [2023-12-19 15:42:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:04,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:04,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:04,476 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:04,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 15:42:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:04,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 15:42:04,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:04,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:42:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:04,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:04,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644196548] [2023-12-19 15:42:04,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41259333] [2023-12-19 15:42:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41259333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:04,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:04,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:42:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668500987] [2023-12-19 15:42:04,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:04,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:42:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:42:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:42:04,805 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:04,952 INFO L93 Difference]: Finished difference Result 475 states and 626 transitions. [2023-12-19 15:42:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:42:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-12-19 15:42:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:04,954 INFO L225 Difference]: With dead ends: 475 [2023-12-19 15:42:04,954 INFO L226 Difference]: Without dead ends: 327 [2023-12-19 15:42:04,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:42:04,955 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 329 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:04,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1566 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-19 15:42:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 195. [2023-12-19 15:42:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 166 states have (on average 1.2409638554216869) internal successors, (206), 166 states have internal predecessors, (206), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 252 transitions. [2023-12-19 15:42:04,977 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 252 transitions. Word has length 179 [2023-12-19 15:42:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:04,977 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 252 transitions. [2023-12-19 15:42:04,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 252 transitions. [2023-12-19 15:42:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-19 15:42:04,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:04,979 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:04,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:05,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:05,187 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:05,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash -833347911, now seen corresponding path program 1 times [2023-12-19 15:42:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:05,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996112788] [2023-12-19 15:42:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:05,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654758640] [2023-12-19 15:42:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:05,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:05,215 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:05,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 15:42:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:05,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 15:42:05,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:05,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996112788] [2023-12-19 15:42:05,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654758640] [2023-12-19 15:42:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654758640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 15:42:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138893025] [2023-12-19 15:42:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 15:42:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 15:42:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 15:42:05,526 INFO L87 Difference]: Start difference. First operand 195 states and 252 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:05,567 INFO L93 Difference]: Finished difference Result 391 states and 506 transitions. [2023-12-19 15:42:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 15:42:05,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-12-19 15:42:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:05,569 INFO L225 Difference]: With dead ends: 391 [2023-12-19 15:42:05,569 INFO L226 Difference]: Without dead ends: 197 [2023-12-19 15:42:05,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 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 15:42:05,570 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:05,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 335 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-19 15:42:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2023-12-19 15:42:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 167 states have (on average 1.2395209580838322) internal successors, (207), 167 states have internal predecessors, (207), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 253 transitions. [2023-12-19 15:42:05,588 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 253 transitions. Word has length 181 [2023-12-19 15:42:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:05,589 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 253 transitions. [2023-12-19 15:42:05,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 253 transitions. [2023-12-19 15:42:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-19 15:42:05,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:05,590 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:05,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:05,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:05,801 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:05,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash 452092143, now seen corresponding path program 1 times [2023-12-19 15:42:05,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:05,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575005889] [2023-12-19 15:42:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:05,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:05,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386135354] [2023-12-19 15:42:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:05,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:05,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:05,837 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:05,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 15:42:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:06,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 15:42:06,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:06,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:06,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575005889] [2023-12-19 15:42:06,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:06,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386135354] [2023-12-19 15:42:06,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386135354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:06,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:06,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 15:42:06,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415337074] [2023-12-19 15:42:06,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:06,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 15:42:06,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 15:42:06,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 15:42:06,113 INFO L87 Difference]: Start difference. First operand 196 states and 253 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:06,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:06,143 INFO L93 Difference]: Finished difference Result 424 states and 553 transitions. [2023-12-19 15:42:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 15:42:06,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-12-19 15:42:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:06,145 INFO L225 Difference]: With dead ends: 424 [2023-12-19 15:42:06,145 INFO L226 Difference]: Without dead ends: 229 [2023-12-19 15:42:06,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 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 15:42:06,146 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 41 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:06,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 364 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-19 15:42:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 198. [2023-12-19 15:42:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 169 states have (on average 1.2366863905325445) internal successors, (209), 169 states have internal predecessors, (209), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 255 transitions. [2023-12-19 15:42:06,165 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 255 transitions. Word has length 181 [2023-12-19 15:42:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:06,165 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 255 transitions. [2023-12-19 15:42:06,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 255 transitions. [2023-12-19 15:42:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-19 15:42:06,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:06,167 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:06,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:06,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:06,374 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:06,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash -568976211, now seen corresponding path program 1 times [2023-12-19 15:42:06,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:06,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131647347] [2023-12-19 15:42:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:06,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144355255] [2023-12-19 15:42:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:06,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:06,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:06,401 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:06,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 15:42:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:06,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 15:42:06,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:06,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 15:42:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:06,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:06,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:06,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131647347] [2023-12-19 15:42:06,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:06,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144355255] [2023-12-19 15:42:06,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144355255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:06,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:06,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:42:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848089854] [2023-12-19 15:42:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:06,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:42:06,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:42:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:42:06,693 INFO L87 Difference]: Start difference. First operand 198 states and 255 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:06,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:06,735 INFO L93 Difference]: Finished difference Result 393 states and 506 transitions. [2023-12-19 15:42:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 15:42:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-12-19 15:42:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:06,738 INFO L225 Difference]: With dead ends: 393 [2023-12-19 15:42:06,739 INFO L226 Difference]: Without dead ends: 196 [2023-12-19 15:42:06,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 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 15:42:06,741 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 84 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:06,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 403 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-19 15:42:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2023-12-19 15:42:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 165 states have (on average 1.2242424242424241) internal successors, (202), 165 states have internal predecessors, (202), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 248 transitions. [2023-12-19 15:42:06,770 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 248 transitions. Word has length 181 [2023-12-19 15:42:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:06,770 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 248 transitions. [2023-12-19 15:42:06,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 248 transitions. [2023-12-19 15:42:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-19 15:42:06,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:06,772 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:06,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-19 15:42:06,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:06,980 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:06,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -409701189, now seen corresponding path program 1 times [2023-12-19 15:42:06,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:06,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676213638] [2023-12-19 15:42:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:06,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:07,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:07,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469343813] [2023-12-19 15:42:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:07,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:07,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:07,010 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:07,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 15:42:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:07,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 15:42:07,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:07,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 15:42:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:07,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:07,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:07,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676213638] [2023-12-19 15:42:07,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:07,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469343813] [2023-12-19 15:42:07,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469343813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:07,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:07,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:42:07,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378439637] [2023-12-19 15:42:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:07,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:42:07,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:42:07,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:42:07,389 INFO L87 Difference]: Start difference. First operand 194 states and 248 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:07,432 INFO L93 Difference]: Finished difference Result 339 states and 435 transitions. [2023-12-19 15:42:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 15:42:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-12-19 15:42:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:07,433 INFO L225 Difference]: With dead ends: 339 [2023-12-19 15:42:07,433 INFO L226 Difference]: Without dead ends: 146 [2023-12-19 15:42:07,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 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 15:42:07,435 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 4 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:07,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 468 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-19 15:42:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2023-12-19 15:42:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.206896551724138) internal successors, (140), 116 states have internal predecessors, (140), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 186 transitions. [2023-12-19 15:42:07,455 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 186 transitions. Word has length 181 [2023-12-19 15:42:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:07,455 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 186 transitions. [2023-12-19 15:42:07,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 186 transitions. [2023-12-19 15:42:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-19 15:42:07,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:07,458 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:07,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:07,667 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:07,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1886180804, now seen corresponding path program 1 times [2023-12-19 15:42:07,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340995309] [2023-12-19 15:42:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:07,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411510255] [2023-12-19 15:42:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:07,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:07,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:07,699 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:07,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 15:42:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:07,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:42:07,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:08,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340995309] [2023-12-19 15:42:08,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411510255] [2023-12-19 15:42:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411510255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:08,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:08,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:08,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324231435] [2023-12-19 15:42:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:08,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:08,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:08,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:08,037 INFO L87 Difference]: Start difference. First operand 145 states and 186 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:08,091 INFO L93 Difference]: Finished difference Result 289 states and 371 transitions. [2023-12-19 15:42:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:42:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 183 [2023-12-19 15:42:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:08,092 INFO L225 Difference]: With dead ends: 289 [2023-12-19 15:42:08,092 INFO L226 Difference]: Without dead ends: 145 [2023-12-19 15:42:08,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:42:08,096 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 75 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:08,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 516 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-19 15:42:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-19 15:42:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 116 states have internal predecessors, (139), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 185 transitions. [2023-12-19 15:42:08,112 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 185 transitions. Word has length 183 [2023-12-19 15:42:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:08,113 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 185 transitions. [2023-12-19 15:42:08,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 185 transitions. [2023-12-19 15:42:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-19 15:42:08,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:08,114 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:08,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-19 15:42:08,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:08,314 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:08,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1191616542, now seen corresponding path program 1 times [2023-12-19 15:42:08,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:08,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078703055] [2023-12-19 15:42:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:08,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701145678] [2023-12-19 15:42:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:08,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:08,351 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:08,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 15:42:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:08,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:42:08,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:08,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078703055] [2023-12-19 15:42:08,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701145678] [2023-12-19 15:42:08,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701145678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:08,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:08,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560204572] [2023-12-19 15:42:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:08,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:08,683 INFO L87 Difference]: Start difference. First operand 145 states and 185 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:08,745 INFO L93 Difference]: Finished difference Result 289 states and 369 transitions. [2023-12-19 15:42:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:42:08,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 185 [2023-12-19 15:42:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:08,747 INFO L225 Difference]: With dead ends: 289 [2023-12-19 15:42:08,747 INFO L226 Difference]: Without dead ends: 145 [2023-12-19 15:42:08,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:08,748 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 74 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:08,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 503 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-19 15:42:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-19 15:42:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.1896551724137931) internal successors, (138), 116 states have internal predecessors, (138), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 184 transitions. [2023-12-19 15:42:08,767 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 184 transitions. Word has length 185 [2023-12-19 15:42:08,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:08,768 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 184 transitions. [2023-12-19 15:42:08,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:08,768 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 184 transitions. [2023-12-19 15:42:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-19 15:42:08,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:08,769 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:08,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-19 15:42:08,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 15:42:08,977 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:08,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:08,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2092233504, now seen corresponding path program 1 times [2023-12-19 15:42:08,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:08,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268824748] [2023-12-19 15:42:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:08,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:09,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:09,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224788060] [2023-12-19 15:42:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:09,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:09,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:09,003 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:09,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 15:42:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:09,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:42:09,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:09,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268824748] [2023-12-19 15:42:09,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224788060] [2023-12-19 15:42:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224788060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:09,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:42:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787859180] [2023-12-19 15:42:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:42:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:09,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:42:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:42:09,446 INFO L87 Difference]: Start difference. First operand 145 states and 184 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:09,603 INFO L93 Difference]: Finished difference Result 289 states and 367 transitions. [2023-12-19 15:42:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:42:09,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 185 [2023-12-19 15:42:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:09,605 INFO L225 Difference]: With dead ends: 289 [2023-12-19 15:42:09,605 INFO L226 Difference]: Without dead ends: 145 [2023-12-19 15:42:09,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:42:09,606 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 145 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:09,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1000 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-19 15:42:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-19 15:42:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 116 states have internal predecessors, (137), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2023-12-19 15:42:09,625 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 185 [2023-12-19 15:42:09,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:09,625 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2023-12-19 15:42:09,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2023-12-19 15:42:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-19 15:42:09,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:09,626 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:09,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:09,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 15:42:09,834 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:09,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1501669214, now seen corresponding path program 1 times [2023-12-19 15:42:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413145813] [2023-12-19 15:42:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:09,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:09,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:09,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913435780] [2023-12-19 15:42:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:09,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:09,872 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:09,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 15:42:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:10,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 15:42:10,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:10,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:10,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:42:10,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-19 15:42:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 13 proven. 543 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-12-19 15:42:10,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:11,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:11,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413145813] [2023-12-19 15:42:11,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913435780] [2023-12-19 15:42:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913435780] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:42:11,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:42:11,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2023-12-19 15:42:11,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233790312] [2023-12-19 15:42:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:11,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:42:11,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:42:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-12-19 15:42:11,287 INFO L87 Difference]: Start difference. First operand 145 states and 183 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:11,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:11,514 INFO L93 Difference]: Finished difference Result 289 states and 365 transitions. [2023-12-19 15:42:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:42:11,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 185 [2023-12-19 15:42:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:11,515 INFO L225 Difference]: With dead ends: 289 [2023-12-19 15:42:11,515 INFO L226 Difference]: Without dead ends: 145 [2023-12-19 15:42:11,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:42:11,516 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 177 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:11,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 808 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-19 15:42:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-19 15:42:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 116 states have internal predecessors, (136), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 182 transitions. [2023-12-19 15:42:11,537 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 182 transitions. Word has length 185 [2023-12-19 15:42:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:11,538 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 182 transitions. [2023-12-19 15:42:11,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 182 transitions. [2023-12-19 15:42:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 15:42:11,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:11,539 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:11,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 15:42:11,744 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:11,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1899775820, now seen corresponding path program 1 times [2023-12-19 15:42:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:11,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391641297] [2023-12-19 15:42:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:11,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:11,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755855467] [2023-12-19 15:42:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:11,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:11,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:11,817 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:11,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 15:42:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:12,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 15:42:12,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:12,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391641297] [2023-12-19 15:42:12,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755855467] [2023-12-19 15:42:12,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755855467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:12,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:12,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:42:12,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603346540] [2023-12-19 15:42:12,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:12,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:42:12,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:12,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:42:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:42:12,147 INFO L87 Difference]: Start difference. First operand 145 states and 182 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:12,184 INFO L93 Difference]: Finished difference Result 319 states and 406 transitions. [2023-12-19 15:42:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:42:12,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-12-19 15:42:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:12,185 INFO L225 Difference]: With dead ends: 319 [2023-12-19 15:42:12,185 INFO L226 Difference]: Without dead ends: 175 [2023-12-19 15:42:12,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 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 15:42:12,186 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 60 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:12,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 479 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-19 15:42:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 147. [2023-12-19 15:42:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 118 states have internal predecessors, (138), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:42:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 184 transitions. [2023-12-19 15:42:12,206 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 184 transitions. Word has length 189 [2023-12-19 15:42:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:12,207 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 184 transitions. [2023-12-19 15:42:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 184 transitions. [2023-12-19 15:42:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 15:42:12,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:12,208 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:12,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:12,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 15:42:12,416 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:12,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:12,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1715133106, now seen corresponding path program 1 times [2023-12-19 15:42:12,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:12,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609172406] [2023-12-19 15:42:12,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:12,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:12,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:12,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168526514] [2023-12-19 15:42:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:12,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:12,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:12,442 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:12,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 15:42:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:12,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:42:12,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:12,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:12,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:12,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609172406] [2023-12-19 15:42:12,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:12,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168526514] [2023-12-19 15:42:12,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168526514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:12,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:12,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:12,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173727171] [2023-12-19 15:42:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:12,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:12,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:12,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:12,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:12,888 INFO L87 Difference]: Start difference. First operand 147 states and 184 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:12,983 INFO L93 Difference]: Finished difference Result 401 states and 497 transitions. [2023-12-19 15:42:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:42:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-12-19 15:42:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:12,985 INFO L225 Difference]: With dead ends: 401 [2023-12-19 15:42:12,985 INFO L226 Difference]: Without dead ends: 255 [2023-12-19 15:42:12,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:12,986 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 85 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:12,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 686 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-19 15:42:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 252. [2023-12-19 15:42:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 208 states have (on average 1.1778846153846154) internal successors, (245), 209 states have internal predecessors, (245), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 15:42:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 311 transitions. [2023-12-19 15:42:13,017 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 311 transitions. Word has length 189 [2023-12-19 15:42:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:13,017 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 311 transitions. [2023-12-19 15:42:13,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 311 transitions. [2023-12-19 15:42:13,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 15:42:13,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:13,019 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:13,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:13,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 15:42:13,227 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:13,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1198711242, now seen corresponding path program 1 times [2023-12-19 15:42:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984075295] [2023-12-19 15:42:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:13,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:13,256 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:13,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422607574] [2023-12-19 15:42:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:13,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:13,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:13,258 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:13,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 15:42:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:13,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 15:42:13,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:13,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:13,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:13,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984075295] [2023-12-19 15:42:13,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422607574] [2023-12-19 15:42:13,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422607574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:13,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:13,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:42:13,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682046464] [2023-12-19 15:42:13,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:13,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:42:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:42:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:42:13,726 INFO L87 Difference]: Start difference. First operand 252 states and 311 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:13,968 INFO L93 Difference]: Finished difference Result 718 states and 880 transitions. [2023-12-19 15:42:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:42:13,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-12-19 15:42:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:13,971 INFO L225 Difference]: With dead ends: 718 [2023-12-19 15:42:13,971 INFO L226 Difference]: Without dead ends: 467 [2023-12-19 15:42:13,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:42:13,972 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 165 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:13,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1460 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-19 15:42:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2023-12-19 15:42:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 386 states have (on average 1.1709844559585492) internal successors, (452), 389 states have internal predecessors, (452), 57 states have call successors, (57), 20 states have call predecessors, (57), 20 states have return successors, (57), 54 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-19 15:42:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 566 transitions. [2023-12-19 15:42:14,029 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 566 transitions. Word has length 189 [2023-12-19 15:42:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:14,029 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 566 transitions. [2023-12-19 15:42:14,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 566 transitions. [2023-12-19 15:42:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 15:42:14,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:14,031 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:14,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:14,239 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:14,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 169351944, now seen corresponding path program 1 times [2023-12-19 15:42:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023961182] [2023-12-19 15:42:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:14,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73058642] [2023-12-19 15:42:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:14,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:14,267 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:14,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 15:42:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:14,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 15:42:14,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:14,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:14,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:14,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023961182] [2023-12-19 15:42:14,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:14,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73058642] [2023-12-19 15:42:14,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73058642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:14,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:14,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:42:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45753239] [2023-12-19 15:42:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:14,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:42:14,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:14,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:42:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:42:14,660 INFO L87 Difference]: Start difference. First operand 464 states and 566 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:14,852 INFO L93 Difference]: Finished difference Result 1159 states and 1422 transitions. [2023-12-19 15:42:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:42:14,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-12-19 15:42:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:14,855 INFO L225 Difference]: With dead ends: 1159 [2023-12-19 15:42:14,855 INFO L226 Difference]: Without dead ends: 696 [2023-12-19 15:42:14,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:42:14,857 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 169 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:14,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1146 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-19 15:42:14,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 609. [2023-12-19 15:42:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 499 states have (on average 1.160320641282565) internal successors, (579), 504 states have internal predecessors, (579), 79 states have call successors, (79), 30 states have call predecessors, (79), 30 states have return successors, (79), 74 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-19 15:42:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 737 transitions. [2023-12-19 15:42:14,928 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 737 transitions. Word has length 189 [2023-12-19 15:42:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:14,928 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 737 transitions. [2023-12-19 15:42:14,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 737 transitions. [2023-12-19 15:42:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 15:42:14,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:14,930 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:14,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:15,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:15,139 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:15,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash 849410314, now seen corresponding path program 1 times [2023-12-19 15:42:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433500024] [2023-12-19 15:42:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:15,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020646809] [2023-12-19 15:42:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:15,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:15,181 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:15,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-19 15:42:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:15,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 15:42:15,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:15,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:42:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:15,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:15,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:15,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433500024] [2023-12-19 15:42:15,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:15,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020646809] [2023-12-19 15:42:15,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020646809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:15,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:15,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:42:15,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936111104] [2023-12-19 15:42:15,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:15,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:42:15,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:42:15,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:42:15,593 INFO L87 Difference]: Start difference. First operand 609 states and 737 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:15,848 INFO L93 Difference]: Finished difference Result 1349 states and 1641 transitions. [2023-12-19 15:42:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:42:15,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-12-19 15:42:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:15,852 INFO L225 Difference]: With dead ends: 1349 [2023-12-19 15:42:15,852 INFO L226 Difference]: Without dead ends: 777 [2023-12-19 15:42:15,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:42:15,856 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 216 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:15,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1849 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-19 15:42:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 663. [2023-12-19 15:42:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 550 states have (on average 1.1527272727272728) internal successors, (634), 555 states have internal predecessors, (634), 81 states have call successors, (81), 31 states have call predecessors, (81), 31 states have return successors, (81), 76 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-19 15:42:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 796 transitions. [2023-12-19 15:42:15,948 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 796 transitions. Word has length 189 [2023-12-19 15:42:15,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:15,948 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 796 transitions. [2023-12-19 15:42:15,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 796 transitions. [2023-12-19 15:42:15,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 15:42:15,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:15,950 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:15,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-19 15:42:16,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:16,158 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:16,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1202455354, now seen corresponding path program 1 times [2023-12-19 15:42:16,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:16,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503731095] [2023-12-19 15:42:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:16,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804912256] [2023-12-19 15:42:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:16,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:16,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:16,182 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:16,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-19 15:42:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:16,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:42:16,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:16,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:16,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:16,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503731095] [2023-12-19 15:42:16,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:16,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804912256] [2023-12-19 15:42:16,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804912256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:16,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:16,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:16,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160338416] [2023-12-19 15:42:16,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:16,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:16,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:16,580 INFO L87 Difference]: Start difference. First operand 663 states and 796 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:16,721 INFO L93 Difference]: Finished difference Result 1291 states and 1543 transitions. [2023-12-19 15:42:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:42:16,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-12-19 15:42:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:16,724 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 15:42:16,724 INFO L226 Difference]: Without dead ends: 673 [2023-12-19 15:42:16,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:42:16,725 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 106 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:16,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 765 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-12-19 15:42:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 509. [2023-12-19 15:42:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 441 states have (on average 1.1473922902494331) internal successors, (506), 443 states have internal predecessors, (506), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-19 15:42:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 604 transitions. [2023-12-19 15:42:16,780 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 604 transitions. Word has length 189 [2023-12-19 15:42:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:16,780 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 604 transitions. [2023-12-19 15:42:16,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 604 transitions. [2023-12-19 15:42:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 15:42:16,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:16,782 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:16,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:16,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 15:42:16,991 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:16,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 700871151, now seen corresponding path program 1 times [2023-12-19 15:42:16,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:16,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826779481] [2023-12-19 15:42:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:17,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193324911] [2023-12-19 15:42:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:17,019 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:17,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-19 15:42:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:17,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 15:42:17,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:17,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:17,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2023-12-19 15:42:17,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 15:42:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:17,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:17,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:17,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826779481] [2023-12-19 15:42:17,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193324911] [2023-12-19 15:42:17,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193324911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:17,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:17,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:42:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539615276] [2023-12-19 15:42:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:17,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:42:17,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:17,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:42:17,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:42:17,599 INFO L87 Difference]: Start difference. First operand 509 states and 604 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:17,852 INFO L93 Difference]: Finished difference Result 1113 states and 1327 transitions. [2023-12-19 15:42:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:42:17,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2023-12-19 15:42:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:17,853 INFO L225 Difference]: With dead ends: 1113 [2023-12-19 15:42:17,854 INFO L226 Difference]: Without dead ends: 605 [2023-12-19 15:42:17,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 15:42:17,855 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 191 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:17,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1266 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-19 15:42:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 509. [2023-12-19 15:42:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 441 states have (on average 1.1473922902494331) internal successors, (506), 443 states have internal predecessors, (506), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-19 15:42:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 604 transitions. [2023-12-19 15:42:17,905 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 604 transitions. Word has length 191 [2023-12-19 15:42:17,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:17,905 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 604 transitions. [2023-12-19 15:42:17,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:17,905 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 604 transitions. [2023-12-19 15:42:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 15:42:17,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:17,907 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:17,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:18,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:18,116 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:18,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1380929521, now seen corresponding path program 1 times [2023-12-19 15:42:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974929534] [2023-12-19 15:42:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:18,146 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:18,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392275789] [2023-12-19 15:42:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:18,147 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:18,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-19 15:42:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:18,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 15:42:18,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:18,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974929534] [2023-12-19 15:42:18,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392275789] [2023-12-19 15:42:18,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392275789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:18,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:18,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:42:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879356533] [2023-12-19 15:42:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:18,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:42:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:42:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:42:18,587 INFO L87 Difference]: Start difference. First operand 509 states and 604 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:18,752 INFO L93 Difference]: Finished difference Result 1084 states and 1285 transitions. [2023-12-19 15:42:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:42:18,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2023-12-19 15:42:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:18,754 INFO L225 Difference]: With dead ends: 1084 [2023-12-19 15:42:18,754 INFO L226 Difference]: Without dead ends: 576 [2023-12-19 15:42:18,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:42:18,755 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 105 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:18,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1036 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-12-19 15:42:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 530. [2023-12-19 15:42:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 444 states have (on average 1.1418918918918919) internal successors, (507), 447 states have internal predecessors, (507), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 58 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-19 15:42:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 629 transitions. [2023-12-19 15:42:18,824 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 629 transitions. Word has length 191 [2023-12-19 15:42:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:18,824 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 629 transitions. [2023-12-19 15:42:18,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 629 transitions. [2023-12-19 15:42:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 15:42:18,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:18,826 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:18,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:19,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 15:42:19,034 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:19,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1317370392, now seen corresponding path program 1 times [2023-12-19 15:42:19,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:19,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383455501] [2023-12-19 15:42:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:19,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:19,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017470473] [2023-12-19 15:42:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:19,060 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:19,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-19 15:42:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:19,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 15:42:19,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:19,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 480 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-19 15:42:19,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:20,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-12-19 15:42:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:20,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:20,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383455501] [2023-12-19 15:42:20,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:20,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017470473] [2023-12-19 15:42:20,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017470473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:42:20,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:42:20,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-19 15:42:20,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402625262] [2023-12-19 15:42:20,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:42:20,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 15:42:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:20,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 15:42:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:42:20,212 INFO L87 Difference]: Start difference. First operand 530 states and 629 transitions. Second operand has 17 states, 15 states have (on average 8.666666666666666) internal successors, (130), 16 states have internal predecessors, (130), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2023-12-19 15:42:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:20,702 INFO L93 Difference]: Finished difference Result 1122 states and 1321 transitions. [2023-12-19 15:42:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:42:20,702 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.666666666666666) internal successors, (130), 16 states have internal predecessors, (130), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) Word has length 191 [2023-12-19 15:42:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:20,704 INFO L225 Difference]: With dead ends: 1122 [2023-12-19 15:42:20,704 INFO L226 Difference]: Without dead ends: 593 [2023-12-19 15:42:20,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-12-19 15:42:20,705 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 329 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:20,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 971 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:42:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-19 15:42:20,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 540. [2023-12-19 15:42:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 433 states have (on average 1.1270207852193996) internal successors, (488), 437 states have internal predecessors, (488), 75 states have call successors, (75), 31 states have call predecessors, (75), 31 states have return successors, (75), 71 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-19 15:42:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 638 transitions. [2023-12-19 15:42:20,814 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 638 transitions. Word has length 191 [2023-12-19 15:42:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:20,815 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 638 transitions. [2023-12-19 15:42:20,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.666666666666666) internal successors, (130), 16 states have internal predecessors, (130), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2023-12-19 15:42:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 638 transitions. [2023-12-19 15:42:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 15:42:20,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:20,816 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:20,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:21,025 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:21,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash 646627672, now seen corresponding path program 1 times [2023-12-19 15:42:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070919399] [2023-12-19 15:42:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:21,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:21,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782798525] [2023-12-19 15:42:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:21,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:21,056 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:21,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-19 15:42:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:21,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 15:42:21,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:21,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:22,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-19 15:42:22,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-19 15:42:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 13 proven. 543 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-12-19 15:42:22,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:22,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-19 15:42:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 27 proven. 39 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:22,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:22,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070919399] [2023-12-19 15:42:22,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:22,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782798525] [2023-12-19 15:42:22,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782798525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:42:22,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:42:22,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 34 [2023-12-19 15:42:22,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996716166] [2023-12-19 15:42:22,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:42:22,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 15:42:22,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 15:42:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 15:42:22,900 INFO L87 Difference]: Start difference. First operand 540 states and 638 transitions. Second operand has 34 states, 32 states have (on average 5.0) internal successors, (160), 33 states have internal predecessors, (160), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:42:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:25,559 INFO L93 Difference]: Finished difference Result 1146 states and 1346 transitions. [2023-12-19 15:42:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 15:42:25,560 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 5.0) internal successors, (160), 33 states have internal predecessors, (160), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) Word has length 191 [2023-12-19 15:42:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:25,562 INFO L225 Difference]: With dead ends: 1146 [2023-12-19 15:42:25,562 INFO L226 Difference]: Without dead ends: 621 [2023-12-19 15:42:25,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=908, Invalid=4062, Unknown=0, NotChecked=0, Total=4970 [2023-12-19 15:42:25,564 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1811 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:25,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 2321 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 15:42:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-19 15:42:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 530. [2023-12-19 15:42:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 423 states have (on average 1.1182033096926713) internal successors, (473), 427 states have internal predecessors, (473), 75 states have call successors, (75), 31 states have call predecessors, (75), 31 states have return successors, (75), 71 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-19 15:42:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 623 transitions. [2023-12-19 15:42:25,658 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 623 transitions. Word has length 191 [2023-12-19 15:42:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:25,658 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 623 transitions. [2023-12-19 15:42:25,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 5.0) internal successors, (160), 33 states have internal predecessors, (160), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:42:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 623 transitions. [2023-12-19 15:42:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 15:42:25,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:25,660 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:25,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:25,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 15:42:25,867 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:25,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 596873368, now seen corresponding path program 1 times [2023-12-19 15:42:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:25,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326378602] [2023-12-19 15:42:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:25,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:25,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675908966] [2023-12-19 15:42:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:25,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:25,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:25,899 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:25,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-19 15:42:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:26,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 15:42:26,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:26,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 36 proven. 520 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-12-19 15:42:26,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:26,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-12-19 15:42:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:27,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:27,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326378602] [2023-12-19 15:42:27,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:27,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675908966] [2023-12-19 15:42:27,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675908966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:42:27,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:42:27,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-19 15:42:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420358982] [2023-12-19 15:42:27,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:42:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 15:42:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 15:42:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:42:27,044 INFO L87 Difference]: Start difference. First operand 530 states and 623 transitions. Second operand has 15 states, 13 states have (on average 9.692307692307692) internal successors, (126), 14 states have internal predecessors, (126), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2023-12-19 15:42:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:27,541 INFO L93 Difference]: Finished difference Result 955 states and 1113 transitions. [2023-12-19 15:42:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:42:27,542 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.692307692307692) internal successors, (126), 14 states have internal predecessors, (126), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) Word has length 191 [2023-12-19 15:42:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:27,544 INFO L225 Difference]: With dead ends: 955 [2023-12-19 15:42:27,544 INFO L226 Difference]: Without dead ends: 478 [2023-12-19 15:42:27,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-12-19 15:42:27,552 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 342 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:27,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 819 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:42:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-19 15:42:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 436. [2023-12-19 15:42:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 344 states have (on average 1.1104651162790697) internal successors, (382), 347 states have internal predecessors, (382), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (63), 60 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-19 15:42:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 508 transitions. [2023-12-19 15:42:27,642 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 508 transitions. Word has length 191 [2023-12-19 15:42:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:27,642 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 508 transitions. [2023-12-19 15:42:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.692307692307692) internal successors, (126), 14 states have internal predecessors, (126), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2023-12-19 15:42:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 508 transitions. [2023-12-19 15:42:27,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 15:42:27,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:27,659 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:27,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:27,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 15:42:27,868 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:27,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1964826703, now seen corresponding path program 1 times [2023-12-19 15:42:27,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050883697] [2023-12-19 15:42:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:27,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:27,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279385809] [2023-12-19 15:42:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:27,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:27,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:27,892 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:27,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-19 15:42:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:28,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 15:42:28,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:28,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:28,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050883697] [2023-12-19 15:42:28,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279385809] [2023-12-19 15:42:28,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279385809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:28,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:28,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:42:28,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793742382] [2023-12-19 15:42:28,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:28,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:42:28,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:42:28,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:42:28,285 INFO L87 Difference]: Start difference. First operand 436 states and 508 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:28,350 INFO L93 Difference]: Finished difference Result 712 states and 831 transitions. [2023-12-19 15:42:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 15:42:28,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2023-12-19 15:42:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:28,362 INFO L225 Difference]: With dead ends: 712 [2023-12-19 15:42:28,362 INFO L226 Difference]: Without dead ends: 333 [2023-12-19 15:42:28,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 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 15:42:28,364 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 3 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:28,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 458 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-19 15:42:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2023-12-19 15:42:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 258 states have (on average 1.1007751937984496) internal successors, (284), 260 states have internal predecessors, (284), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-19 15:42:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 386 transitions. [2023-12-19 15:42:28,436 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 386 transitions. Word has length 191 [2023-12-19 15:42:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:28,436 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 386 transitions. [2023-12-19 15:42:28,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 386 transitions. [2023-12-19 15:42:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 15:42:28,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:28,437 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:28,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 15:42:28,646 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:28,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash 258213848, now seen corresponding path program 1 times [2023-12-19 15:42:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002107377] [2023-12-19 15:42:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:28,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:28,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331976820] [2023-12-19 15:42:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:28,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:28,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:28,670 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:28,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-19 15:42:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:29,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 15:42:29,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:29,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 30 proven. 528 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-12-19 15:42:29,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:29,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-12-19 15:42:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 30 proven. 36 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002107377] [2023-12-19 15:42:29,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331976820] [2023-12-19 15:42:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331976820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:42:29,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:42:29,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 15:42:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040731233] [2023-12-19 15:42:29,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:42:29,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 15:42:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:29,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 15:42:29,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:42:29,932 INFO L87 Difference]: Start difference. First operand 333 states and 386 transitions. Second operand has 14 states, 12 states have (on average 12.833333333333334) internal successors, (154), 13 states have internal predecessors, (154), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2023-12-19 15:42:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:30,245 INFO L93 Difference]: Finished difference Result 569 states and 652 transitions. [2023-12-19 15:42:30,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:42:30,246 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 12.833333333333334) internal successors, (154), 13 states have internal predecessors, (154), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) Word has length 191 [2023-12-19 15:42:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:30,247 INFO L225 Difference]: With dead ends: 569 [2023-12-19 15:42:30,247 INFO L226 Difference]: Without dead ends: 251 [2023-12-19 15:42:30,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-12-19 15:42:30,248 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 196 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:30,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 633 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:42:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-19 15:42:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 229. [2023-12-19 15:42:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 172 states have (on average 1.0813953488372092) internal successors, (186), 173 states have internal predecessors, (186), 37 states have call successors, (37), 19 states have call predecessors, (37), 19 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-19 15:42:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 260 transitions. [2023-12-19 15:42:30,307 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 260 transitions. Word has length 191 [2023-12-19 15:42:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:30,308 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 260 transitions. [2023-12-19 15:42:30,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 12.833333333333334) internal successors, (154), 13 states have internal predecessors, (154), 6 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2023-12-19 15:42:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 260 transitions. [2023-12-19 15:42:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-19 15:42:30,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:30,309 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:30,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:30,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-19 15:42:30,518 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:30,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -365587203, now seen corresponding path program 1 times [2023-12-19 15:42:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318713432] [2023-12-19 15:42:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:30,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:30,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484872872] [2023-12-19 15:42:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:30,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:30,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:30,543 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:30,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-19 15:42:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:30,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 15:42:30,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:30,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-19 15:42:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:30,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:30,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318713432] [2023-12-19 15:42:30,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484872872] [2023-12-19 15:42:30,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484872872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:30,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:30,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160850975] [2023-12-19 15:42:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:30,956 INFO L87 Difference]: Start difference. First operand 229 states and 260 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:31,097 INFO L93 Difference]: Finished difference Result 397 states and 453 transitions. [2023-12-19 15:42:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:42:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 193 [2023-12-19 15:42:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:31,099 INFO L225 Difference]: With dead ends: 397 [2023-12-19 15:42:31,099 INFO L226 Difference]: Without dead ends: 229 [2023-12-19 15:42:31,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:31,100 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 135 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:31,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 377 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-19 15:42:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-12-19 15:42:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 172 states have (on average 1.0755813953488371) internal successors, (185), 173 states have internal predecessors, (185), 37 states have call successors, (37), 19 states have call predecessors, (37), 19 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-19 15:42:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2023-12-19 15:42:31,177 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 193 [2023-12-19 15:42:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:31,178 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2023-12-19 15:42:31,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2023-12-19 15:42:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 15:42:31,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:31,179 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:31,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:31,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:31,388 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:31,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash -365087240, now seen corresponding path program 1 times [2023-12-19 15:42:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:31,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029594695] [2023-12-19 15:42:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:31,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:31,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:31,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93841249] [2023-12-19 15:42:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:31,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:31,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:31,415 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:31,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-19 15:42:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:31,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 15:42:31,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:31,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2023-12-19 15:42:31,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-12-19 15:42:31,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2023-12-19 15:42:32,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2023-12-19 15:42:32,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2023-12-19 15:42:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:32,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:32,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-12-19 15:42:32,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:42:32,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 57 [2023-12-19 15:42:32,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-19 15:42:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:32,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029594695] [2023-12-19 15:42:32,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93841249] [2023-12-19 15:42:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93841249] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:42:32,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:42:32,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 13 [2023-12-19 15:42:32,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165721548] [2023-12-19 15:42:32,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:32,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:42:32,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:42:32,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 15:42:32,568 INFO L87 Difference]: Start difference. First operand 229 states and 259 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:32,993 INFO L93 Difference]: Finished difference Result 545 states and 617 transitions. [2023-12-19 15:42:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:42:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 195 [2023-12-19 15:42:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:32,995 INFO L225 Difference]: With dead ends: 545 [2023-12-19 15:42:32,995 INFO L226 Difference]: Without dead ends: 377 [2023-12-19 15:42:32,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 376 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-12-19 15:42:32,996 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 169 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:32,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1389 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:42:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-19 15:42:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2023-12-19 15:42:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 285 states have (on average 1.0842105263157895) internal successors, (309), 287 states have internal predecessors, (309), 53 states have call successors, (53), 30 states have call predecessors, (53), 30 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-19 15:42:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 415 transitions. [2023-12-19 15:42:33,087 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 415 transitions. Word has length 195 [2023-12-19 15:42:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:33,088 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 415 transitions. [2023-12-19 15:42:33,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 415 transitions. [2023-12-19 15:42:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 15:42:33,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:33,089 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:33,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-19 15:42:33,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:33,297 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:33,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:33,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1174433866, now seen corresponding path program 1 times [2023-12-19 15:42:33,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:33,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086549050] [2023-12-19 15:42:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:33,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:33,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:33,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650497879] [2023-12-19 15:42:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:33,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:33,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:33,322 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:33,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-19 15:42:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:33,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 15:42:33,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:33,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 15:42:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:33,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:33,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086549050] [2023-12-19 15:42:33,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650497879] [2023-12-19 15:42:33,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650497879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:33,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:33,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:33,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234222035] [2023-12-19 15:42:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:33,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:33,738 INFO L87 Difference]: Start difference. First operand 369 states and 415 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:33,878 INFO L93 Difference]: Finished difference Result 697 states and 784 transitions. [2023-12-19 15:42:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:42:33,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 195 [2023-12-19 15:42:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:33,880 INFO L225 Difference]: With dead ends: 697 [2023-12-19 15:42:33,880 INFO L226 Difference]: Without dead ends: 389 [2023-12-19 15:42:33,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:42:33,881 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 106 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:33,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 556 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-19 15:42:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2023-12-19 15:42:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.0771929824561404) internal successors, (307), 287 states have internal predecessors, (307), 54 states have call successors, (54), 31 states have call predecessors, (54), 31 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 15:42:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 415 transitions. [2023-12-19 15:42:33,960 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 415 transitions. Word has length 195 [2023-12-19 15:42:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:33,960 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 415 transitions. [2023-12-19 15:42:33,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 415 transitions. [2023-12-19 15:42:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 15:42:33,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:33,961 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:33,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:34,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-19 15:42:34,170 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:34,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:34,170 INFO L85 PathProgramCache]: Analyzing trace with hash 58559482, now seen corresponding path program 1 times [2023-12-19 15:42:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:34,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818817548] [2023-12-19 15:42:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:34,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:34,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:34,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078560993] [2023-12-19 15:42:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:34,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:34,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:34,195 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:34,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-19 15:42:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:34,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 15:42:34,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:34,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 15:42:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:34,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:34,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:34,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818817548] [2023-12-19 15:42:34,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:34,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078560993] [2023-12-19 15:42:34,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078560993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:34,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:34,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:34,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526374757] [2023-12-19 15:42:34,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:34,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:34,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:34,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:34,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:34,608 INFO L87 Difference]: Start difference. First operand 371 states and 415 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:34,756 INFO L93 Difference]: Finished difference Result 682 states and 762 transitions. [2023-12-19 15:42:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:42:34,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 195 [2023-12-19 15:42:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:34,758 INFO L225 Difference]: With dead ends: 682 [2023-12-19 15:42:34,758 INFO L226 Difference]: Without dead ends: 378 [2023-12-19 15:42:34,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:42:34,759 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 97 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:34,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 845 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:34,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-19 15:42:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 292. [2023-12-19 15:42:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 232 states have (on average 1.0775862068965518) internal successors, (250), 233 states have internal predecessors, (250), 38 states have call successors, (38), 21 states have call predecessors, (38), 21 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 15:42:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 326 transitions. [2023-12-19 15:42:34,818 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 326 transitions. Word has length 195 [2023-12-19 15:42:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:34,818 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 326 transitions. [2023-12-19 15:42:34,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 326 transitions. [2023-12-19 15:42:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 15:42:34,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:34,820 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:34,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:35,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:35,028 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:35,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:35,028 INFO L85 PathProgramCache]: Analyzing trace with hash -750787144, now seen corresponding path program 1 times [2023-12-19 15:42:35,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:35,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095887902] [2023-12-19 15:42:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:35,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:35,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119507648] [2023-12-19 15:42:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:35,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:35,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:35,058 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:35,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-19 15:42:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:35,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 15:42:35,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:35,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:42:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:35,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:35,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-12-19 15:42:35,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:42:35,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 57 [2023-12-19 15:42:35,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 20 [2023-12-19 15:42:35,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2023-12-19 15:42:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095887902] [2023-12-19 15:42:35,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119507648] [2023-12-19 15:42:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119507648] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:42:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:42:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 14 [2023-12-19 15:42:35,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137851568] [2023-12-19 15:42:35,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:35,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:42:35,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:42:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:42:35,639 INFO L87 Difference]: Start difference. First operand 292 states and 326 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:35,866 INFO L93 Difference]: Finished difference Result 638 states and 715 transitions. [2023-12-19 15:42:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:42:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 195 [2023-12-19 15:42:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:35,868 INFO L225 Difference]: With dead ends: 638 [2023-12-19 15:42:35,868 INFO L226 Difference]: Without dead ends: 413 [2023-12-19 15:42:35,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-19 15:42:35,868 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 168 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:35,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2085 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-19 15:42:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 288. [2023-12-19 15:42:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 228 states have (on average 1.0745614035087718) internal successors, (245), 229 states have internal predecessors, (245), 38 states have call successors, (38), 21 states have call predecessors, (38), 21 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 15:42:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 321 transitions. [2023-12-19 15:42:35,936 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 321 transitions. Word has length 195 [2023-12-19 15:42:35,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:35,936 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 321 transitions. [2023-12-19 15:42:35,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 321 transitions. [2023-12-19 15:42:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-19 15:42:35,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:35,938 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:35,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:36,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-19 15:42:36,147 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:36,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:36,147 INFO L85 PathProgramCache]: Analyzing trace with hash 810029158, now seen corresponding path program 1 times [2023-12-19 15:42:36,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:36,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130689455] [2023-12-19 15:42:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:36,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:36,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365634012] [2023-12-19 15:42:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:36,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:36,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:36,172 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:36,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-19 15:42:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:36,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 15:42:36,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:36,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-19 15:42:36,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2023-12-19 15:42:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:36,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:36,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130689455] [2023-12-19 15:42:36,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365634012] [2023-12-19 15:42:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365634012] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:42:36,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:42:36,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-12-19 15:42:36,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313797273] [2023-12-19 15:42:36,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:36,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:42:36,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:42:36,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:42:36,914 INFO L87 Difference]: Start difference. First operand 288 states and 321 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:37,072 INFO L93 Difference]: Finished difference Result 377 states and 417 transitions. [2023-12-19 15:42:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:42:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 197 [2023-12-19 15:42:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:37,074 INFO L225 Difference]: With dead ends: 377 [2023-12-19 15:42:37,074 INFO L226 Difference]: Without dead ends: 375 [2023-12-19 15:42:37,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-19 15:42:37,075 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 53 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:37,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1011 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:42:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-19 15:42:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 358. [2023-12-19 15:42:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 298 states have (on average 1.0738255033557047) internal successors, (320), 299 states have internal predecessors, (320), 38 states have call successors, (38), 21 states have call predecessors, (38), 21 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 15:42:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 396 transitions. [2023-12-19 15:42:37,157 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 396 transitions. Word has length 197 [2023-12-19 15:42:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:37,157 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 396 transitions. [2023-12-19 15:42:37,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 396 transitions. [2023-12-19 15:42:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-19 15:42:37,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:37,159 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:37,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:37,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:37,368 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:37,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:37,369 INFO L85 PathProgramCache]: Analyzing trace with hash -771778082, now seen corresponding path program 1 times [2023-12-19 15:42:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:37,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776676928] [2023-12-19 15:42:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:37,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:37,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:37,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335375278] [2023-12-19 15:42:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:37,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:37,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:37,393 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:37,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-19 15:42:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:37,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 15:42:37,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:37,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-19 15:42:37,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:42:37,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-19 15:42:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:37,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:38,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:38,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776676928] [2023-12-19 15:42:38,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:38,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335375278] [2023-12-19 15:42:38,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335375278] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:42:38,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:42:38,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2023-12-19 15:42:38,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533329799] [2023-12-19 15:42:38,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:42:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:42:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-12-19 15:42:38,162 INFO L87 Difference]: Start difference. First operand 358 states and 396 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:38,516 INFO L93 Difference]: Finished difference Result 540 states and 599 transitions. [2023-12-19 15:42:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:42:38,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 198 [2023-12-19 15:42:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:38,518 INFO L225 Difference]: With dead ends: 540 [2023-12-19 15:42:38,519 INFO L226 Difference]: Without dead ends: 538 [2023-12-19 15:42:38,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-12-19 15:42:38,519 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 257 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:38,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1326 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:42:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-19 15:42:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 342. [2023-12-19 15:42:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 282 states have (on average 1.070921985815603) internal successors, (302), 283 states have internal predecessors, (302), 38 states have call successors, (38), 21 states have call predecessors, (38), 21 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 15:42:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 378 transitions. [2023-12-19 15:42:38,575 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 378 transitions. Word has length 198 [2023-12-19 15:42:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:38,575 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 378 transitions. [2023-12-19 15:42:38,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 378 transitions. [2023-12-19 15:42:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 15:42:38,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:38,577 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:38,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:38,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:38,786 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:38,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:38,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1350076417, now seen corresponding path program 1 times [2023-12-19 15:42:38,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:38,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572555126] [2023-12-19 15:42:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:38,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:38,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25439602] [2023-12-19 15:42:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:38,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:38,811 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:38,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-19 15:42:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:39,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-19 15:42:39,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:39,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:39,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-19 15:42:39,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-19 15:42:39,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-19 15:42:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 13 proven. 567 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-19 15:42:39,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:40,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-19 15:42:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 27 proven. 39 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:40,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:40,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572555126] [2023-12-19 15:42:40,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:40,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25439602] [2023-12-19 15:42:40,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25439602] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:42:40,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:42:40,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2023-12-19 15:42:40,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893306129] [2023-12-19 15:42:40,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:42:40,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 15:42:40,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 15:42:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2023-12-19 15:42:40,341 INFO L87 Difference]: Start difference. First operand 342 states and 378 transitions. Second operand has 29 states, 27 states have (on average 6.851851851851852) internal successors, (185), 28 states have internal predecessors, (185), 7 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:42:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:41,720 INFO L93 Difference]: Finished difference Result 659 states and 720 transitions. [2023-12-19 15:42:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-19 15:42:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 6.851851851851852) internal successors, (185), 28 states have internal predecessors, (185), 7 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) Word has length 199 [2023-12-19 15:42:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:41,722 INFO L225 Difference]: With dead ends: 659 [2023-12-19 15:42:41,722 INFO L226 Difference]: Without dead ends: 657 [2023-12-19 15:42:41,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=757, Invalid=2903, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 15:42:41,724 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 947 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:41,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1727 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 15:42:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-19 15:42:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 486. [2023-12-19 15:42:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 426 states have (on average 1.0774647887323943) internal successors, (459), 427 states have internal predecessors, (459), 38 states have call successors, (38), 21 states have call predecessors, (38), 21 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 15:42:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 535 transitions. [2023-12-19 15:42:41,791 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 535 transitions. Word has length 199 [2023-12-19 15:42:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:41,792 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 535 transitions. [2023-12-19 15:42:41,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 6.851851851851852) internal successors, (185), 28 states have internal predecessors, (185), 7 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:42:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 535 transitions. [2023-12-19 15:42:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 15:42:41,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:41,793 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:41,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-19 15:42:41,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-19 15:42:41,994 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:41,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1407334719, now seen corresponding path program 1 times [2023-12-19 15:42:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:41,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281746120] [2023-12-19 15:42:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:42,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:42,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095254702] [2023-12-19 15:42:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:42,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:42,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:42,017 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:42,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-19 15:42:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:42,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 15:42:42,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:42,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 15:42:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:42,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281746120] [2023-12-19 15:42:42,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095254702] [2023-12-19 15:42:42,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095254702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:42,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:42,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:42,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316062473] [2023-12-19 15:42:42,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:42,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:42,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:42,434 INFO L87 Difference]: Start difference. First operand 486 states and 535 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:42,542 INFO L93 Difference]: Finished difference Result 909 states and 1001 transitions. [2023-12-19 15:42:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:42:42,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 199 [2023-12-19 15:42:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:42,544 INFO L225 Difference]: With dead ends: 909 [2023-12-19 15:42:42,544 INFO L226 Difference]: Without dead ends: 490 [2023-12-19 15:42:42,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:42,545 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 29 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:42,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 523 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-19 15:42:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 486. [2023-12-19 15:42:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 426 states have (on average 1.0727699530516432) internal successors, (457), 427 states have internal predecessors, (457), 38 states have call successors, (38), 21 states have call predecessors, (38), 21 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 15:42:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 533 transitions. [2023-12-19 15:42:42,644 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 533 transitions. Word has length 199 [2023-12-19 15:42:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:42,644 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 533 transitions. [2023-12-19 15:42:42,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 533 transitions. [2023-12-19 15:42:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 15:42:42,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:42,646 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:42,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-19 15:42:42,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-19 15:42:42,854 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:42,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:42,855 INFO L85 PathProgramCache]: Analyzing trace with hash -345323362, now seen corresponding path program 1 times [2023-12-19 15:42:42,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:42,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197593353] [2023-12-19 15:42:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:42,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:42,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:42,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638421803] [2023-12-19 15:42:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:42,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:42,879 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:42,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-19 15:42:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:43,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 15:42:43,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:43,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 15:42:43,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-19 15:42:43,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-19 15:42:43,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 15:42:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 13 proven. 543 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-12-19 15:42:43,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:42:43,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-19 15:42:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 27 proven. 39 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-19 15:42:43,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:43,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197593353] [2023-12-19 15:42:43,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:43,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638421803] [2023-12-19 15:42:43,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638421803] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:42:43,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:42:43,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2023-12-19 15:42:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003167498] [2023-12-19 15:42:43,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:42:43,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 15:42:43,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:43,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 15:42:43,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:42:43,997 INFO L87 Difference]: Start difference. First operand 486 states and 533 transitions. Second operand has 16 states, 14 states have (on average 10.214285714285714) internal successors, (143), 15 states have internal predecessors, (143), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:42:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:44,719 INFO L93 Difference]: Finished difference Result 1077 states and 1184 transitions. [2023-12-19 15:42:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 15:42:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 10.214285714285714) internal successors, (143), 15 states have internal predecessors, (143), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) Word has length 199 [2023-12-19 15:42:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:44,721 INFO L225 Difference]: With dead ends: 1077 [2023-12-19 15:42:44,721 INFO L226 Difference]: Without dead ends: 644 [2023-12-19 15:42:44,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 383 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 15:42:44,722 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 595 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:44,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1033 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:42:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-19 15:42:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 411. [2023-12-19 15:42:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 351 states have (on average 1.0683760683760684) internal successors, (375), 352 states have internal predecessors, (375), 38 states have call successors, (38), 21 states have call predecessors, (38), 21 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 15:42:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 451 transitions. [2023-12-19 15:42:44,778 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 451 transitions. Word has length 199 [2023-12-19 15:42:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:44,778 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 451 transitions. [2023-12-19 15:42:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 10.214285714285714) internal successors, (143), 15 states have internal predecessors, (143), 7 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 5 states have call predecessors, (46), 7 states have call successors, (46) [2023-12-19 15:42:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 451 transitions. [2023-12-19 15:42:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 15:42:44,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:42:44,779 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:44,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-19 15:42:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-19 15:42:44,980 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:42:44,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:42:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash 78323360, now seen corresponding path program 1 times [2023-12-19 15:42:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:42:44,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832433319] [2023-12-19 15:42:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:42:45,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:42:45,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585110049] [2023-12-19 15:42:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:42:45,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:45,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:42:45,005 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:42:45,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-19 15:42:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:42:45,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 15:42:45,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:42:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-19 15:42:45,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:42:45,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:42:45,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832433319] [2023-12-19 15:42:45,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:42:45,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585110049] [2023-12-19 15:42:45,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585110049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:42:45,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:42:45,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:42:45,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363751107] [2023-12-19 15:42:45,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:42:45,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:42:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:42:45,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:42:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:42:45,441 INFO L87 Difference]: Start difference. First operand 411 states and 451 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:45,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:42:45,516 INFO L93 Difference]: Finished difference Result 682 states and 754 transitions. [2023-12-19 15:42:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:42:45,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 199 [2023-12-19 15:42:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:42:45,517 INFO L225 Difference]: With dead ends: 682 [2023-12-19 15:42:45,517 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 15:42:45,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:42:45,519 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 11 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:42:45,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 604 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:42:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 15:42:45,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 15:42:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 15:42:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 15:42:45,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 199 [2023-12-19 15:42:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:42:45,520 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 15:42:45,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-19 15:42:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 15:42:45,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 15:42:45,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 15:42:45,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-12-19 15:42:45,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:42:45,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 15:45:13,631 WARN L293 SmtUtils]: Spent 2.46m on a formula simplification. DAG size of input: 257 DAG size of output: 309 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-19 15:46:03,960 WARN L293 SmtUtils]: Spent 50.33s on a formula simplification. DAG size of input: 213 DAG size of output: 246 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-19 15:48:30,937 WARN L293 SmtUtils]: Spent 2.45m on a formula simplification. DAG size of input: 246 DAG size of output: 298 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-19 15:56:13,735 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-3-22-3-9-5-22-4-22-4-22-5-22-5-13-5-13-5-13-5-13-4-13-4-13-4-13-4-13-3-13-3-13-3-13-2-13-1 term,while PolyPacSimplificationTermWalker was simplifying 13 xjuncts wrt. a ∧-52-22-7-22-10-22-10-22-10-17-10-13-10-13-9-13-8-13-5-13-4-13-4-13-3-13-3-13-3-13-2-13-1 context. [2023-12-19 15:56:13,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 15:56:13,740 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-19 15:56:13,741 INFO L158 Benchmark]: Toolchain (without parser) took 868083.82ms. Allocated memory was 190.8MB in the beginning and 886.0MB in the end (delta: 695.2MB). Free memory was 146.8MB in the beginning and 534.4MB in the end (delta: -387.6MB). Peak memory consumption was 308.7MB. Max. memory is 8.0GB. [2023-12-19 15:56:13,742 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 147.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 15:56:13,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.91ms. Allocated memory is still 190.8MB. Free memory was 146.4MB in the beginning and 131.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 15:56:13,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.70ms. Allocated memory is still 190.8MB. Free memory was 131.4MB in the beginning and 127.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 15:56:13,742 INFO L158 Benchmark]: Boogie Preprocessor took 96.83ms. Allocated memory is still 190.8MB. Free memory was 127.2MB in the beginning and 121.6MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 15:56:13,742 INFO L158 Benchmark]: RCFGBuilder took 753.23ms. Allocated memory is still 190.8MB. Free memory was 121.6MB in the beginning and 144.5MB in the end (delta: -22.9MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. [2023-12-19 15:56:13,743 INFO L158 Benchmark]: TraceAbstraction took 866758.51ms. Allocated memory was 190.8MB in the beginning and 886.0MB in the end (delta: 695.2MB). Free memory was 144.0MB in the beginning and 534.4MB in the end (delta: -390.4MB). Peak memory consumption was 304.8MB. Max. memory is 8.0GB. [2023-12-19 15:56:13,743 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 147.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 377.91ms. Allocated memory is still 190.8MB. Free memory was 146.4MB in the beginning and 131.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.70ms. Allocated memory is still 190.8MB. Free memory was 131.4MB in the beginning and 127.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 96.83ms. Allocated memory is still 190.8MB. Free memory was 127.2MB in the beginning and 121.6MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 753.23ms. Allocated memory is still 190.8MB. Free memory was 121.6MB in the beginning and 144.5MB in the end (delta: -22.9MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. * TraceAbstraction took 866758.51ms. Allocated memory was 190.8MB in the beginning and 886.0MB in the end (delta: 695.2MB). Free memory was 144.0MB in the beginning and 534.4MB in the end (delta: -390.4MB). Peak memory consumption was 304.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-3-22-3-8-10-22-9-22-8-22-10-13-10-13-10-13-10-13-9-13-8-13-7-13-6-13-5-13-4-13-3-13-2-13-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-31-22-6-22-13-22-13-22-13-22-13-13-13-13-13-13-13-13-13-13-13-13-13-13-6-13-5-13-4-13-3-13-2-13-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown