/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:26:44,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:26:44,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:26:44,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:26:44,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:26:44,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:26:44,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:26:44,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:26:44,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:26:44,528 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:26:44,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:26:44,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:26:44,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:26:44,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:26:44,530 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:26:44,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:26:44,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:26:44,531 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:26:44,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:26:44,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:26:44,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:26:44,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:26:44,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:26:44,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:26:44,532 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:26:44,532 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:26:44,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:26:44,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:26:44,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:26:44,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:26:44,534 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:26:44,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:26:44,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:26:44,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:26:44,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:26:44,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:26:44,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:26:44,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:26:44,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:26:44,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:26:44,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:26:44,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:26:44,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:26:44,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:26:44,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:26:44,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:26:44,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:26:44,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:26:44,938 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:26:44,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2023-12-16 04:26:46,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:26:46,801 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:26:46,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2023-12-16 04:26:46,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072354d2c/841f603a857a491a98ec722f5bf98356/FLAGfb983398f [2023-12-16 04:26:46,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072354d2c/841f603a857a491a98ec722f5bf98356 [2023-12-16 04:26:46,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:26:46,849 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:26:46,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:26:46,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:26:46,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:26:46,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:26:46" (1/1) ... [2023-12-16 04:26:46,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772b975e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:46, skipping insertion in model container [2023-12-16 04:26:46,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:26:46" (1/1) ... [2023-12-16 04:26:46,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:26:47,120 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-80.i[916,929] [2023-12-16 04:26:47,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:26:47,293 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:26:47,305 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-80.i[916,929] [2023-12-16 04:26:47,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:26:47,376 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:26:47,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47 WrapperNode [2023-12-16 04:26:47,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:26:47,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:26:47,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:26:47,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:26:47,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,442 INFO L138 Inliner]: procedures = 29, calls = 244, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 811 [2023-12-16 04:26:47,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:26:47,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:26:47,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:26:47,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:26:47,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,530 INFO L175 MemorySlicer]: Split 199 memory accesses to 18 slices as follows [2, 3, 11, 8, 12, 13, 6, 14, 5, 22, 22, 14, 16, 8, 8, 3, 23, 9]. 12 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 19 writes are split as follows [0, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]. [2023-12-16 04:26:47,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:26:47,579 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:26:47,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:26:47,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:26:47,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (1/1) ... [2023-12-16 04:26:47,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:26:47,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:47,653 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) [2023-12-16 04:26:47,705 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 [2023-12-16 04:26:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:26:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:26:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:26:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-16 04:26:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-12-16 04:26:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2023-12-16 04:26:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#16 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#17 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-12-16 04:26:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#16 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#17 [2023-12-16 04:26:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-16 04:26:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-12-16 04:26:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-12-16 04:26:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-12-16 04:26:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-12-16 04:26:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-12-16 04:26:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-12-16 04:26:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-12-16 04:26:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-12-16 04:26:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-12-16 04:26:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-12-16 04:26:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2023-12-16 04:26:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2023-12-16 04:26:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#14 [2023-12-16 04:26:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#15 [2023-12-16 04:26:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#16 [2023-12-16 04:26:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#17 [2023-12-16 04:26:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:26:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:26:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:26:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-16 04:26:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-16 04:26:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-16 04:26:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-16 04:26:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:26:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:26:48,027 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:26:48,029 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:26:48,630 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:26:48,671 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:26:48,671 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:26:48,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:26:48 BoogieIcfgContainer [2023-12-16 04:26:48,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:26:48,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:26:48,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:26:48,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:26:48,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:26:46" (1/3) ... [2023-12-16 04:26:48,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395fa3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:26:48, skipping insertion in model container [2023-12-16 04:26:48,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:47" (2/3) ... [2023-12-16 04:26:48,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395fa3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:26:48, skipping insertion in model container [2023-12-16 04:26:48,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:26:48" (3/3) ... [2023-12-16 04:26:48,677 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-80.i [2023-12-16 04:26:48,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:26:48,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:26:48,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:26:48,792 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;@42a55fa0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:26:48,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:26:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 04:26:48,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:48,811 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:48,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:48,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash 206751335, now seen corresponding path program 1 times [2023-12-16 04:26:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134511354] [2023-12-16 04:26:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:49,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134511354] [2023-12-16 04:26:49,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:26:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368979466] [2023-12-16 04:26:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:49,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:49,118 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) [2023-12-16 04:26:49,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:26:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:49,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:26:49,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-16 04:26:49,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368979466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:49,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:26:49,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281381927] [2023-12-16 04:26:49,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:49,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:26:49,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:26:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:26:49,725 INFO L87 Difference]: Start difference. First operand has 147 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 04:26:49,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:49,794 INFO L93 Difference]: Finished difference Result 291 states and 459 transitions. [2023-12-16 04:26:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:26:49,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2023-12-16 04:26:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:49,804 INFO L225 Difference]: With dead ends: 291 [2023-12-16 04:26:49,805 INFO L226 Difference]: Without dead ends: 145 [2023-12-16 04:26:49,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:26:49,810 INFO L413 NwaCegarLoop]: 213 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, 213 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 [2023-12-16 04:26:49,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:26:49,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-16 04:26:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-16 04:26:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 126 states have internal predecessors, (183), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 217 transitions. [2023-12-16 04:26:49,859 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 217 transitions. Word has length 148 [2023-12-16 04:26:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:49,859 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 217 transitions. [2023-12-16 04:26:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 04:26:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 217 transitions. [2023-12-16 04:26:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 04:26:49,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:49,866 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:49,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:50,074 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 [2023-12-16 04:26:50,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:50,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash 953343569, now seen corresponding path program 1 times [2023-12-16 04:26:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574064774] [2023-12-16 04:26:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:50,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:50,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418556482] [2023-12-16 04:26:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:50,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:50,191 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) [2023-12-16 04:26:50,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:26:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:50,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:26:50,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:26:50,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:50,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:50,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574064774] [2023-12-16 04:26:50,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418556482] [2023-12-16 04:26:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418556482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:50,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:50,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:26:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455433518] [2023-12-16 04:26:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:50,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:26:50,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:26:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:26:50,667 INFO L87 Difference]: Start difference. First operand 145 states and 217 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 04:26:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:50,759 INFO L93 Difference]: Finished difference Result 295 states and 442 transitions. [2023-12-16 04:26:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:26:50,760 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2023-12-16 04:26:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:50,763 INFO L225 Difference]: With dead ends: 295 [2023-12-16 04:26:50,763 INFO L226 Difference]: Without dead ends: 151 [2023-12-16 04:26:50,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:26:50,768 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 10 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 632 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 [2023-12-16 04:26:50,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 632 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:26:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-16 04:26:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2023-12-16 04:26:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.4453125) internal successors, (185), 128 states have internal predecessors, (185), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 219 transitions. [2023-12-16 04:26:50,789 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 219 transitions. Word has length 148 [2023-12-16 04:26:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:50,790 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 219 transitions. [2023-12-16 04:26:50,790 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 04:26:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 219 transitions. [2023-12-16 04:26:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 04:26:50,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:50,792 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:50,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:50,999 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 [2023-12-16 04:26:50,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:50,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1797349071, now seen corresponding path program 1 times [2023-12-16 04:26:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:51,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959737359] [2023-12-16 04:26:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:51,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538979810] [2023-12-16 04:26:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:51,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:51,127 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) [2023-12-16 04:26:51,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:26:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:51,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:26:51,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:51,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959737359] [2023-12-16 04:26:51,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538979810] [2023-12-16 04:26:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538979810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:51,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:51,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:26:51,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541332498] [2023-12-16 04:26:51,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:51,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:26:51,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:26:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:26:51,435 INFO L87 Difference]: Start difference. First operand 147 states and 219 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:51,468 INFO L93 Difference]: Finished difference Result 305 states and 454 transitions. [2023-12-16 04:26:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:26:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-16 04:26:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:51,472 INFO L225 Difference]: With dead ends: 305 [2023-12-16 04:26:51,472 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 04:26:51,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:26:51,474 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 21 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:26:51,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 630 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:26:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 04:26:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2023-12-16 04:26:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.4384615384615385) internal successors, (187), 130 states have internal predecessors, (187), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 221 transitions. [2023-12-16 04:26:51,488 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 221 transitions. Word has length 148 [2023-12-16 04:26:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:51,489 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 221 transitions. [2023-12-16 04:26:51,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 221 transitions. [2023-12-16 04:26:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 04:26:51,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:51,491 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:51,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:51,697 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 [2023-12-16 04:26:51,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:51,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:51,698 INFO L85 PathProgramCache]: Analyzing trace with hash 988002445, now seen corresponding path program 1 times [2023-12-16 04:26:51,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:51,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895959075] [2023-12-16 04:26:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:51,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:51,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:51,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617997465] [2023-12-16 04:26:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:51,855 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) [2023-12-16 04:26:51,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:26:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:52,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:26:52,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:52,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:52,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:52,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895959075] [2023-12-16 04:26:52,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:52,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617997465] [2023-12-16 04:26:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617997465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:52,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:52,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:26:52,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939317885] [2023-12-16 04:26:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:52,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:26:52,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:26:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:26:52,202 INFO L87 Difference]: Start difference. First operand 149 states and 221 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:52,269 INFO L93 Difference]: Finished difference Result 305 states and 452 transitions. [2023-12-16 04:26:52,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:26:52,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-16 04:26:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:52,271 INFO L225 Difference]: With dead ends: 305 [2023-12-16 04:26:52,271 INFO L226 Difference]: Without dead ends: 157 [2023-12-16 04:26:52,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:26:52,273 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 12 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 628 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 [2023-12-16 04:26:52,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 628 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:26:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-16 04:26:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-12-16 04:26:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 132 states have internal predecessors, (189), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 223 transitions. [2023-12-16 04:26:52,277 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 223 transitions. Word has length 148 [2023-12-16 04:26:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:52,278 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 223 transitions. [2023-12-16 04:26:52,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 223 transitions. [2023-12-16 04:26:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 04:26:52,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:52,279 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:52,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:52,496 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 [2023-12-16 04:26:52,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:52,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1045260747, now seen corresponding path program 1 times [2023-12-16 04:26:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60626689] [2023-12-16 04:26:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:52,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:52,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213913246] [2023-12-16 04:26:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:52,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:52,549 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) [2023-12-16 04:26:52,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:26:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:52,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:26:52,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:52,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60626689] [2023-12-16 04:26:52,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213913246] [2023-12-16 04:26:52,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213913246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:52,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:52,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:26:52,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469364900] [2023-12-16 04:26:52,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:52,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:26:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:26:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:26:52,870 INFO L87 Difference]: Start difference. First operand 151 states and 223 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:52,897 INFO L93 Difference]: Finished difference Result 305 states and 450 transitions. [2023-12-16 04:26:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:26:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-16 04:26:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:52,898 INFO L225 Difference]: With dead ends: 305 [2023-12-16 04:26:52,898 INFO L226 Difference]: Without dead ends: 155 [2023-12-16 04:26:52,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:26:52,899 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 3 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:26:52,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 628 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:26:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-16 04:26:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2023-12-16 04:26:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 134 states have internal predecessors, (191), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 225 transitions. [2023-12-16 04:26:52,907 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 225 transitions. Word has length 148 [2023-12-16 04:26:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:52,908 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 225 transitions. [2023-12-16 04:26:52,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 225 transitions. [2023-12-16 04:26:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 04:26:52,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:52,909 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:52,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 04:26:53,115 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 [2023-12-16 04:26:53,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:53,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1045320329, now seen corresponding path program 1 times [2023-12-16 04:26:53,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:53,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784224171] [2023-12-16 04:26:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:53,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810314834] [2023-12-16 04:26:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:53,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:53,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:53,164 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) [2023-12-16 04:26:53,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:26:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:53,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:26:53,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:53,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784224171] [2023-12-16 04:26:53,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810314834] [2023-12-16 04:26:53,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810314834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:53,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:53,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:26:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102213729] [2023-12-16 04:26:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:53,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:26:53,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:26:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:26:53,478 INFO L87 Difference]: Start difference. First operand 153 states and 225 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:53,524 INFO L93 Difference]: Finished difference Result 346 states and 508 transitions. [2023-12-16 04:26:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:26:53,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-16 04:26:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:53,526 INFO L225 Difference]: With dead ends: 346 [2023-12-16 04:26:53,526 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 04:26:53,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:26:53,527 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 66 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:26:53,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 701 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:26:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 04:26:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 155. [2023-12-16 04:26:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 136 states have (on average 1.4191176470588236) internal successors, (193), 136 states have internal predecessors, (193), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 227 transitions. [2023-12-16 04:26:53,533 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 227 transitions. Word has length 148 [2023-12-16 04:26:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:53,534 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 227 transitions. [2023-12-16 04:26:53,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 227 transitions. [2023-12-16 04:26:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:26:53,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:53,535 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:53,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:53,754 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 [2023-12-16 04:26:53,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:53,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash -675206354, now seen corresponding path program 1 times [2023-12-16 04:26:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:53,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514539964] [2023-12-16 04:26:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:53,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:53,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:53,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319389887] [2023-12-16 04:26:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:53,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:53,811 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) [2023-12-16 04:26:53,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:26:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:54,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:26:54,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:54,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514539964] [2023-12-16 04:26:54,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:54,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319389887] [2023-12-16 04:26:54,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319389887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:54,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:54,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:26:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430139736] [2023-12-16 04:26:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:54,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:26:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:26:54,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:26:54,199 INFO L87 Difference]: Start difference. First operand 155 states and 227 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:54,218 INFO L93 Difference]: Finished difference Result 313 states and 460 transitions. [2023-12-16 04:26:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:26:54,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-16 04:26:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:54,222 INFO L225 Difference]: With dead ends: 313 [2023-12-16 04:26:54,222 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 04:26:54,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:26:54,223 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:26:54,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 420 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:26:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 04:26:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2023-12-16 04:26:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.4172661870503598) internal successors, (197), 139 states have internal predecessors, (197), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:26:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 231 transitions. [2023-12-16 04:26:54,235 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 231 transitions. Word has length 150 [2023-12-16 04:26:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:54,236 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 231 transitions. [2023-12-16 04:26:54,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 231 transitions. [2023-12-16 04:26:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:26:54,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:54,259 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:54,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:54,466 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 [2023-12-16 04:26:54,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:54,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -456351636, now seen corresponding path program 1 times [2023-12-16 04:26:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273640578] [2023-12-16 04:26:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:54,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172102943] [2023-12-16 04:26:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:54,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:54,497 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) [2023-12-16 04:26:54,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:26:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:54,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-16 04:26:54,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:55,298 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 [2023-12-16 04:26:55,798 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 [2023-12-16 04:26:55,817 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 [2023-12-16 04:26:55,819 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 30 treesize of output 18 [2023-12-16 04:26:55,865 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 [2023-12-16 04:26:55,872 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 [2023-12-16 04:26:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 7 proven. 309 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-16 04:26:55,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:26:56,086 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 32 treesize of output 28 [2023-12-16 04:26:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-16 04:26:56,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:56,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273640578] [2023-12-16 04:26:56,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:56,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172102943] [2023-12-16 04:26:56,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172102943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:26:56,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:26:56,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-12-16 04:26:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654009597] [2023-12-16 04:26:56,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:26:56,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 04:26:56,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 04:26:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:26:56,153 INFO L87 Difference]: Start difference. First operand 158 states and 231 transitions. Second operand has 18 states, 16 states have (on average 7.625) internal successors, (122), 17 states have internal predecessors, (122), 6 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-16 04:26:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:57,561 INFO L93 Difference]: Finished difference Result 567 states and 815 transitions. [2023-12-16 04:26:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 04:26:57,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.625) internal successors, (122), 17 states have internal predecessors, (122), 6 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) Word has length 150 [2023-12-16 04:26:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:57,564 INFO L225 Difference]: With dead ends: 567 [2023-12-16 04:26:57,564 INFO L226 Difference]: Without dead ends: 410 [2023-12-16 04:26:57,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=639, Invalid=2117, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 04:26:57,566 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1301 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:26:57,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1506 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:26:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-16 04:26:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 261. [2023-12-16 04:26:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 221 states have (on average 1.3891402714932126) internal successors, (307), 222 states have internal predecessors, (307), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:26:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 375 transitions. [2023-12-16 04:26:57,582 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 375 transitions. Word has length 150 [2023-12-16 04:26:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:57,582 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 375 transitions. [2023-12-16 04:26:57,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.625) internal successors, (122), 17 states have internal predecessors, (122), 6 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-16 04:26:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 375 transitions. [2023-12-16 04:26:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:26:57,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:57,584 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:57,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:57,791 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 [2023-12-16 04:26:57,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:57,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash -809219860, now seen corresponding path program 1 times [2023-12-16 04:26:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:57,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051879785] [2023-12-16 04:26:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:57,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:57,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:57,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152070380] [2023-12-16 04:26:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:57,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:57,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:57,821 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) [2023-12-16 04:26:57,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:26:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:58,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:26:58,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:58,116 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 [2023-12-16 04:26:58,118 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 [2023-12-16 04:26:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:58,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051879785] [2023-12-16 04:26:58,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152070380] [2023-12-16 04:26:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152070380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:58,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:58,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:26:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923374730] [2023-12-16 04:26:58,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:58,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:26:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:26:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:26:58,126 INFO L87 Difference]: Start difference. First operand 261 states and 375 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:58,251 INFO L93 Difference]: Finished difference Result 585 states and 838 transitions. [2023-12-16 04:26:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:26:58,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-16 04:26:58,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:58,255 INFO L225 Difference]: With dead ends: 585 [2023-12-16 04:26:58,255 INFO L226 Difference]: Without dead ends: 399 [2023-12-16 04:26:58,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:26:58,256 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 235 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:26:58,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1357 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:26:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-16 04:26:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 264. [2023-12-16 04:26:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 224 states have (on average 1.3883928571428572) internal successors, (311), 225 states have internal predecessors, (311), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:26:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 379 transitions. [2023-12-16 04:26:58,266 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 379 transitions. Word has length 150 [2023-12-16 04:26:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:58,266 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 379 transitions. [2023-12-16 04:26:58,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 379 transitions. [2023-12-16 04:26:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:26:58,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:58,267 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:58,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:58,476 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 [2023-12-16 04:26:58,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:58,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1796803694, now seen corresponding path program 1 times [2023-12-16 04:26:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:58,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295517710] [2023-12-16 04:26:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:58,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:58,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:58,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404874458] [2023-12-16 04:26:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:58,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:58,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:58,504 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) [2023-12-16 04:26:58,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:26:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:58,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 04:26:58,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:58,863 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 [2023-12-16 04:26:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:58,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:26:58,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295517710] [2023-12-16 04:26:58,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404874458] [2023-12-16 04:26:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404874458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:26:58,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:26:58,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:26:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231411138] [2023-12-16 04:26:58,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:58,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:26:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:26:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:26:58,879 INFO L87 Difference]: Start difference. First operand 264 states and 379 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:59,106 INFO L93 Difference]: Finished difference Result 630 states and 901 transitions. [2023-12-16 04:26:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:26:59,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-16 04:26:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:59,108 INFO L225 Difference]: With dead ends: 630 [2023-12-16 04:26:59,108 INFO L226 Difference]: Without dead ends: 441 [2023-12-16 04:26:59,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:26:59,109 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 294 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:26:59,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1474 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:26:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-16 04:26:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 267. [2023-12-16 04:26:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 227 states have (on average 1.3876651982378854) internal successors, (315), 228 states have internal predecessors, (315), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:26:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 383 transitions. [2023-12-16 04:26:59,126 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 383 transitions. Word has length 150 [2023-12-16 04:26:59,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:59,126 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 383 transitions. [2023-12-16 04:26:59,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:26:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 383 transitions. [2023-12-16 04:26:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:26:59,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:59,128 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:26:59,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:59,334 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 [2023-12-16 04:26:59,335 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:59,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash 208455792, now seen corresponding path program 1 times [2023-12-16 04:26:59,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:59,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952847934] [2023-12-16 04:26:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:59,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:59,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520233779] [2023-12-16 04:26:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:59,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:59,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:59,410 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) [2023-12-16 04:26:59,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:26:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:59,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 04:26:59,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:59,796 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 [2023-12-16 04:26:59,809 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 [2023-12-16 04:26:59,813 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 [2023-12-16 04:26:59,832 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 [2023-12-16 04:27:00,020 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 28 treesize of output 16 [2023-12-16 04:27:00,025 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 [2023-12-16 04:27:00,029 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 [2023-12-16 04:27:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:00,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:00,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952847934] [2023-12-16 04:27:00,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:00,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520233779] [2023-12-16 04:27:00,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520233779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:00,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:00,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:27:00,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331448737] [2023-12-16 04:27:00,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:00,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:27:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:27:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:27:00,064 INFO L87 Difference]: Start difference. First operand 267 states and 383 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:00,767 INFO L93 Difference]: Finished difference Result 649 states and 924 transitions. [2023-12-16 04:27:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:27:00,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-16 04:27:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:00,769 INFO L225 Difference]: With dead ends: 649 [2023-12-16 04:27:00,769 INFO L226 Difference]: Without dead ends: 457 [2023-12-16 04:27:00,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:27:00,770 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 601 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:00,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 2103 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:27:00,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-16 04:27:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 274. [2023-12-16 04:27:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 234 states have (on average 1.3846153846153846) internal successors, (324), 235 states have internal predecessors, (324), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 392 transitions. [2023-12-16 04:27:00,799 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 392 transitions. Word has length 150 [2023-12-16 04:27:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:00,799 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 392 transitions. [2023-12-16 04:27:00,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:00,799 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 392 transitions. [2023-12-16 04:27:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:27:00,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:00,813 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:00,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:01,016 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 [2023-12-16 04:27:01,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:01,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash -590365142, now seen corresponding path program 1 times [2023-12-16 04:27:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128169202] [2023-12-16 04:27:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:01,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:01,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:01,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838892496] [2023-12-16 04:27:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:01,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:01,057 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) [2023-12-16 04:27:01,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:27:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:01,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:27:01,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:01,444 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 [2023-12-16 04:27:01,450 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 [2023-12-16 04:27:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:01,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128169202] [2023-12-16 04:27:01,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838892496] [2023-12-16 04:27:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838892496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:01,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:01,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:27:01,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701574005] [2023-12-16 04:27:01,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:01,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:27:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:27:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:27:01,463 INFO L87 Difference]: Start difference. First operand 274 states and 392 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:01,667 INFO L93 Difference]: Finished difference Result 612 states and 873 transitions. [2023-12-16 04:27:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:27:01,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-16 04:27:01,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:01,669 INFO L225 Difference]: With dead ends: 612 [2023-12-16 04:27:01,669 INFO L226 Difference]: Without dead ends: 413 [2023-12-16 04:27:01,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:27:01,670 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 247 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:01,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 754 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:27:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-16 04:27:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 279. [2023-12-16 04:27:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 239 states have (on average 1.3849372384937237) internal successors, (331), 240 states have internal predecessors, (331), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 399 transitions. [2023-12-16 04:27:01,682 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 399 transitions. Word has length 150 [2023-12-16 04:27:01,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:01,682 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 399 transitions. [2023-12-16 04:27:01,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 399 transitions. [2023-12-16 04:27:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:27:01,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:01,683 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:01,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-16 04:27:01,890 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 [2023-12-16 04:27:01,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:01,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2015658412, now seen corresponding path program 1 times [2023-12-16 04:27:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:01,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285076197] [2023-12-16 04:27:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:01,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:01,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776524091] [2023-12-16 04:27:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:01,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:01,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:01,931 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) [2023-12-16 04:27:01,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:27:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:02,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 04:27:02,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:02,472 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 [2023-12-16 04:27:02,916 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 [2023-12-16 04:27:02,945 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 [2023-12-16 04:27:02,949 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 [2023-12-16 04:27:03,653 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 [2023-12-16 04:27:03,710 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 [2023-12-16 04:27:03,714 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 19 [2023-12-16 04:27:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 14 proven. 162 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-16 04:27:03,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285076197] [2023-12-16 04:27:05,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776524091] [2023-12-16 04:27:05,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776524091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:27:05,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:27:05,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-12-16 04:27:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712373281] [2023-12-16 04:27:05,259 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:27:05,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 04:27:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 04:27:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-12-16 04:27:05,261 INFO L87 Difference]: Start difference. First operand 279 states and 399 transitions. Second operand has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 04:27:07,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:07,495 INFO L93 Difference]: Finished difference Result 651 states and 918 transitions. [2023-12-16 04:27:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 04:27:07,521 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2023-12-16 04:27:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:07,523 INFO L225 Difference]: With dead ends: 651 [2023-12-16 04:27:07,523 INFO L226 Difference]: Without dead ends: 447 [2023-12-16 04:27:07,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 04:27:07,526 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 984 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:07,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1846 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 04:27:07,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-16 04:27:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 287. [2023-12-16 04:27:07,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 245 states have (on average 1.3755102040816327) internal successors, (337), 246 states have internal predecessors, (337), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 405 transitions. [2023-12-16 04:27:07,565 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 405 transitions. Word has length 150 [2023-12-16 04:27:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:07,565 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 405 transitions. [2023-12-16 04:27:07,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 04:27:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 405 transitions. [2023-12-16 04:27:07,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 04:27:07,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:07,567 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:07,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:07,767 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 [2023-12-16 04:27:07,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:07,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash 427310510, now seen corresponding path program 1 times [2023-12-16 04:27:07,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:07,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145435203] [2023-12-16 04:27:07,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:07,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:07,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:07,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3235545] [2023-12-16 04:27:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:07,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:07,823 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) [2023-12-16 04:27:07,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:27:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:08,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 04:27:08,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:08,245 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 [2023-12-16 04:27:08,252 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 27 treesize of output 19 [2023-12-16 04:27:08,263 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 [2023-12-16 04:27:08,279 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 [2023-12-16 04:27:08,481 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 29 [2023-12-16 04:27:08,531 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 87 treesize of output 63 [2023-12-16 04:27:08,533 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 60 treesize of output 36 [2023-12-16 04:27:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:08,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:08,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145435203] [2023-12-16 04:27:08,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3235545] [2023-12-16 04:27:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3235545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:08,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:27:08,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380577124] [2023-12-16 04:27:08,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:08,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:27:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:27:08,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:27:08,623 INFO L87 Difference]: Start difference. First operand 287 states and 405 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:13,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:27:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:13,856 INFO L93 Difference]: Finished difference Result 729 states and 1023 transitions. [2023-12-16 04:27:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:27:13,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-16 04:27:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:13,859 INFO L225 Difference]: With dead ends: 729 [2023-12-16 04:27:13,859 INFO L226 Difference]: Without dead ends: 521 [2023-12-16 04:27:13,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:27:13,860 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 615 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:13,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 2188 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 504 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-12-16 04:27:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-12-16 04:27:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 292. [2023-12-16 04:27:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 250 states have (on average 1.376) internal successors, (344), 251 states have internal predecessors, (344), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 412 transitions. [2023-12-16 04:27:13,925 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 412 transitions. Word has length 150 [2023-12-16 04:27:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:13,925 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 412 transitions. [2023-12-16 04:27:13,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 412 transitions. [2023-12-16 04:27:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 04:27:13,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:13,929 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:13,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:14,139 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 [2023-12-16 04:27:14,139 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:14,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash 232825485, now seen corresponding path program 1 times [2023-12-16 04:27:14,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:14,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883585207] [2023-12-16 04:27:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:14,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:14,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500394593] [2023-12-16 04:27:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:14,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:14,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:14,318 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) [2023-12-16 04:27:14,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:27:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:14,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:27:14,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:14,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:14,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883585207] [2023-12-16 04:27:14,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500394593] [2023-12-16 04:27:14,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500394593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:14,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:14,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:27:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717247099] [2023-12-16 04:27:14,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:14,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:27:14,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:27:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:27:14,677 INFO L87 Difference]: Start difference. First operand 292 states and 412 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:14,700 INFO L93 Difference]: Finished difference Result 541 states and 764 transitions. [2023-12-16 04:27:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:27:14,701 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-16 04:27:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:14,702 INFO L225 Difference]: With dead ends: 541 [2023-12-16 04:27:14,702 INFO L226 Difference]: Without dead ends: 328 [2023-12-16 04:27:14,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:27:14,704 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 46 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:14,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 458 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:27:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-16 04:27:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 293. [2023-12-16 04:27:14,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 251 states have (on average 1.3745019920318724) internal successors, (345), 252 states have internal predecessors, (345), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 413 transitions. [2023-12-16 04:27:14,718 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 413 transitions. Word has length 151 [2023-12-16 04:27:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:14,718 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 413 transitions. [2023-12-16 04:27:14,718 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 413 transitions. [2023-12-16 04:27:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 04:27:14,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:14,720 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:14,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:14,927 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 [2023-12-16 04:27:14,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:14,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash -778291765, now seen corresponding path program 1 times [2023-12-16 04:27:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:14,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098572372] [2023-12-16 04:27:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:14,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:14,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:14,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728679896] [2023-12-16 04:27:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:14,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:14,961 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) [2023-12-16 04:27:14,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:27:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:15,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:27:15,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:15,376 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 [2023-12-16 04:27:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:15,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:15,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:15,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098572372] [2023-12-16 04:27:15,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:15,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728679896] [2023-12-16 04:27:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728679896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:15,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:15,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:27:15,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723421493] [2023-12-16 04:27:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:15,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:27:15,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:15,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:27:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:27:15,417 INFO L87 Difference]: Start difference. First operand 293 states and 413 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:15,561 INFO L93 Difference]: Finished difference Result 625 states and 876 transitions. [2023-12-16 04:27:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:27:15,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-16 04:27:15,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:15,564 INFO L225 Difference]: With dead ends: 625 [2023-12-16 04:27:15,564 INFO L226 Difference]: Without dead ends: 411 [2023-12-16 04:27:15,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:27:15,565 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 308 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:15,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1201 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:27:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-16 04:27:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 312. [2023-12-16 04:27:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 270 states have (on average 1.374074074074074) internal successors, (371), 271 states have internal predecessors, (371), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 439 transitions. [2023-12-16 04:27:15,582 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 439 transitions. Word has length 151 [2023-12-16 04:27:15,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:15,582 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 439 transitions. [2023-12-16 04:27:15,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 439 transitions. [2023-12-16 04:27:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:15,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:15,584 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:15,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:15,791 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 [2023-12-16 04:27:15,791 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:15,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2122711089, now seen corresponding path program 1 times [2023-12-16 04:27:15,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:15,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048638700] [2023-12-16 04:27:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:15,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:15,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:15,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916099809] [2023-12-16 04:27:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:15,823 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) [2023-12-16 04:27:15,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:27:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:16,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 04:27:16,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:16,162 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 [2023-12-16 04:27:16,178 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 [2023-12-16 04:27:16,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 04:27:16,316 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 [2023-12-16 04:27:16,322 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 [2023-12-16 04:27:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:16,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:16,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:16,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048638700] [2023-12-16 04:27:16,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:16,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916099809] [2023-12-16 04:27:16,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916099809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:16,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:16,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:27:16,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052553688] [2023-12-16 04:27:16,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:16,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:27:16,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:27:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:27:16,343 INFO L87 Difference]: Start difference. First operand 312 states and 439 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:17,402 INFO L93 Difference]: Finished difference Result 780 states and 1096 transitions. [2023-12-16 04:27:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:27:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-16 04:27:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:17,404 INFO L225 Difference]: With dead ends: 780 [2023-12-16 04:27:17,404 INFO L226 Difference]: Without dead ends: 547 [2023-12-16 04:27:17,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:27:17,405 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 512 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:17,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2121 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 04:27:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-16 04:27:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 341. [2023-12-16 04:27:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 299 states have (on average 1.3846153846153846) internal successors, (414), 300 states have internal predecessors, (414), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 482 transitions. [2023-12-16 04:27:17,419 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 482 transitions. Word has length 152 [2023-12-16 04:27:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:17,419 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 482 transitions. [2023-12-16 04:27:17,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 482 transitions. [2023-12-16 04:27:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:17,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:17,420 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:17,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:17,628 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 [2023-12-16 04:27:17,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:17,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 534363187, now seen corresponding path program 1 times [2023-12-16 04:27:17,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:17,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062780141] [2023-12-16 04:27:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:17,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:17,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531565493] [2023-12-16 04:27:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:17,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:17,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:17,688 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) [2023-12-16 04:27:17,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:27:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:18,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 04:27:18,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:18,058 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 [2023-12-16 04:27:18,062 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 [2023-12-16 04:27:18,197 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 68 treesize of output 52 [2023-12-16 04:27:18,201 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 49 treesize of output 29 [2023-12-16 04:27:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:18,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:18,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:18,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062780141] [2023-12-16 04:27:18,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:18,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531565493] [2023-12-16 04:27:18,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531565493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:18,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:18,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:27:18,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266252708] [2023-12-16 04:27:18,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:18,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:27:18,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:27:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:27:18,351 INFO L87 Difference]: Start difference. First operand 341 states and 482 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:19,729 INFO L93 Difference]: Finished difference Result 854 states and 1201 transitions. [2023-12-16 04:27:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 04:27:19,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-16 04:27:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:19,731 INFO L225 Difference]: With dead ends: 854 [2023-12-16 04:27:19,731 INFO L226 Difference]: Without dead ends: 592 [2023-12-16 04:27:19,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:27:19,732 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 572 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:19,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 2467 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 04:27:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-12-16 04:27:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 343. [2023-12-16 04:27:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 301 states have (on average 1.3820598006644518) internal successors, (416), 302 states have internal predecessors, (416), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 484 transitions. [2023-12-16 04:27:19,763 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 484 transitions. Word has length 152 [2023-12-16 04:27:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 484 transitions. [2023-12-16 04:27:19,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 484 transitions. [2023-12-16 04:27:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:19,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:19,764 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:19,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:19,971 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 [2023-12-16 04:27:19,972 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:19,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1154580555, now seen corresponding path program 1 times [2023-12-16 04:27:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503125111] [2023-12-16 04:27:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:20,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625991743] [2023-12-16 04:27:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:20,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:20,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:20,028 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) [2023-12-16 04:27:20,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:27:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:20,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:27:20,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:20,545 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 [2023-12-16 04:27:20,547 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 [2023-12-16 04:27:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:20,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503125111] [2023-12-16 04:27:20,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625991743] [2023-12-16 04:27:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625991743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:20,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:20,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:27:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021137645] [2023-12-16 04:27:20,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:20,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:27:20,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:27:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:27:20,555 INFO L87 Difference]: Start difference. First operand 343 states and 484 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:20,708 INFO L93 Difference]: Finished difference Result 746 states and 1050 transitions. [2023-12-16 04:27:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:27:20,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-16 04:27:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:20,711 INFO L225 Difference]: With dead ends: 746 [2023-12-16 04:27:20,711 INFO L226 Difference]: Without dead ends: 482 [2023-12-16 04:27:20,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:27:20,711 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 244 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:20,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1205 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:27:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-16 04:27:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 341. [2023-12-16 04:27:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 299 states have (on average 1.3779264214046822) internal successors, (412), 300 states have internal predecessors, (412), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 480 transitions. [2023-12-16 04:27:20,726 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 480 transitions. Word has length 152 [2023-12-16 04:27:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:20,726 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 480 transitions. [2023-12-16 04:27:20,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 480 transitions. [2023-12-16 04:27:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:20,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:20,727 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:20,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:20,934 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 [2023-12-16 04:27:20,935 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:20,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:20,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1507448779, now seen corresponding path program 1 times [2023-12-16 04:27:20,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:20,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711315330] [2023-12-16 04:27:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:20,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:20,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:20,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390277231] [2023-12-16 04:27:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:20,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:20,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:20,968 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) [2023-12-16 04:27:20,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 04:27:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:21,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 04:27:21,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:21,313 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 [2023-12-16 04:27:21,319 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 [2023-12-16 04:27:21,373 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 [2023-12-16 04:27:21,395 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 [2023-12-16 04:27:21,481 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 98 treesize of output 78 [2023-12-16 04:27:21,483 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 75 treesize of output 43 [2023-12-16 04:27:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:21,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711315330] [2023-12-16 04:27:21,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390277231] [2023-12-16 04:27:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390277231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:21,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:21,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 04:27:21,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867403618] [2023-12-16 04:27:21,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:21,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 04:27:21,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:21,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 04:27:21,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:27:21,666 INFO L87 Difference]: Start difference. First operand 341 states and 480 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:22,890 INFO L93 Difference]: Finished difference Result 888 states and 1241 transitions. [2023-12-16 04:27:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:27:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-16 04:27:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:22,892 INFO L225 Difference]: With dead ends: 888 [2023-12-16 04:27:22,893 INFO L226 Difference]: Without dead ends: 626 [2023-12-16 04:27:22,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:27:22,894 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 623 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:22,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 3269 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:27:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-16 04:27:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 348. [2023-12-16 04:27:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 306 states have (on average 1.3790849673202614) internal successors, (422), 307 states have internal predecessors, (422), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 490 transitions. [2023-12-16 04:27:22,909 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 490 transitions. Word has length 152 [2023-12-16 04:27:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:22,910 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 490 transitions. [2023-12-16 04:27:22,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 490 transitions. [2023-12-16 04:27:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:22,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:22,911 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:22,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:23,136 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 [2023-12-16 04:27:23,136 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:23,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 299753841, now seen corresponding path program 1 times [2023-12-16 04:27:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:23,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738419686] [2023-12-16 04:27:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:23,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:23,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:23,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105453785] [2023-12-16 04:27:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:23,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:23,188 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) [2023-12-16 04:27:23,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-16 04:27:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:23,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 04:27:23,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:23,562 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 [2023-12-16 04:27:23,565 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 [2023-12-16 04:27:23,692 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 [2023-12-16 04:27:23,734 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 30 treesize of output 18 [2023-12-16 04:27:23,737 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 [2023-12-16 04:27:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:23,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:23,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:23,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738419686] [2023-12-16 04:27:23,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:23,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105453785] [2023-12-16 04:27:23,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105453785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:23,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:23,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 04:27:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273419562] [2023-12-16 04:27:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 04:27:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 04:27:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:27:23,968 INFO L87 Difference]: Start difference. First operand 348 states and 490 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:25,761 INFO L93 Difference]: Finished difference Result 863 states and 1209 transitions. [2023-12-16 04:27:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 04:27:25,761 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-16 04:27:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:25,763 INFO L225 Difference]: With dead ends: 863 [2023-12-16 04:27:25,764 INFO L226 Difference]: Without dead ends: 594 [2023-12-16 04:27:25,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:27:25,765 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 640 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:25,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 2590 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 04:27:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-16 04:27:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 348. [2023-12-16 04:27:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 306 states have (on average 1.3790849673202614) internal successors, (422), 307 states have internal predecessors, (422), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 490 transitions. [2023-12-16 04:27:25,858 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 490 transitions. Word has length 152 [2023-12-16 04:27:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:25,858 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 490 transitions. [2023-12-16 04:27:25,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 490 transitions. [2023-12-16 04:27:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:25,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:25,859 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:25,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:26,068 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 [2023-12-16 04:27:26,068 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:26,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1288594061, now seen corresponding path program 1 times [2023-12-16 04:27:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922756582] [2023-12-16 04:27:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:26,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:26,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941946949] [2023-12-16 04:27:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:26,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:26,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:26,136 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) [2023-12-16 04:27:26,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-16 04:27:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:26,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 04:27:26,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:26,570 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 [2023-12-16 04:27:26,574 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 [2023-12-16 04:27:26,689 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 [2023-12-16 04:27:26,746 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 68 treesize of output 52 [2023-12-16 04:27:26,748 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 49 treesize of output 29 [2023-12-16 04:27:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:27:26,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:27:26,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922756582] [2023-12-16 04:27:26,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941946949] [2023-12-16 04:27:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941946949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:27:26,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:27:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:27:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767541124] [2023-12-16 04:27:26,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:27:26,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:27:26,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:27:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:27:26,831 INFO L87 Difference]: Start difference. First operand 348 states and 490 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:29,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:27:33,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:27:37,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:27:37,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:37,989 INFO L93 Difference]: Finished difference Result 859 states and 1202 transitions. [2023-12-16 04:27:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 04:27:37,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-16 04:27:37,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:37,992 INFO L225 Difference]: With dead ends: 859 [2023-12-16 04:27:37,992 INFO L226 Difference]: Without dead ends: 590 [2023-12-16 04:27:37,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:27:37,993 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 507 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:37,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2796 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 668 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2023-12-16 04:27:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-16 04:27:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 348. [2023-12-16 04:27:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 306 states have (on average 1.3790849673202614) internal successors, (422), 307 states have internal predecessors, (422), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:27:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 490 transitions. [2023-12-16 04:27:38,042 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 490 transitions. Word has length 152 [2023-12-16 04:27:38,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:38,042 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 490 transitions. [2023-12-16 04:27:38,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:27:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 490 transitions. [2023-12-16 04:27:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:38,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:38,043 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:38,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-16 04:27:38,250 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 [2023-12-16 04:27:38,250 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:38,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash -786052813, now seen corresponding path program 1 times [2023-12-16 04:27:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508943608] [2023-12-16 04:27:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:38,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:38,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870486242] [2023-12-16 04:27:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:38,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:38,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:38,299 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) [2023-12-16 04:27:38,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-16 04:27:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:38,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-16 04:27:38,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:38,724 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 [2023-12-16 04:27:39,245 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 [2023-12-16 04:27:39,762 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 [2023-12-16 04:27:39,764 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 [2023-12-16 04:27:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 383 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-16 04:27:39,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:27:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:27:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508943608] [2023-12-16 04:27:49,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:27:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870486242] [2023-12-16 04:27:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870486242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:27:49,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:27:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-16 04:27:49,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891953686] [2023-12-16 04:27:49,744 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:27:49,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 04:27:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:27:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 04:27:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=321, Unknown=2, NotChecked=0, Total=380 [2023-12-16 04:27:49,745 INFO L87 Difference]: Start difference. First operand 348 states and 490 transitions. Second operand has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-16 04:27:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:27:55,285 INFO L93 Difference]: Finished difference Result 621 states and 872 transitions. [2023-12-16 04:27:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 04:27:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) Word has length 152 [2023-12-16 04:27:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:27:55,287 INFO L225 Difference]: With dead ends: 621 [2023-12-16 04:27:55,287 INFO L226 Difference]: Without dead ends: 352 [2023-12-16 04:27:55,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=231, Invalid=1027, Unknown=2, NotChecked=0, Total=1260 [2023-12-16 04:27:55,288 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 774 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:27:55,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1461 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 04:27:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-16 04:27:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 262. [2023-12-16 04:27:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 240 states have (on average 1.3958333333333333) internal successors, (335), 240 states have internal predecessors, (335), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:27:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 369 transitions. [2023-12-16 04:27:55,299 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 369 transitions. Word has length 152 [2023-12-16 04:27:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:27:55,299 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 369 transitions. [2023-12-16 04:27:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-16 04:27:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 369 transitions. [2023-12-16 04:27:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:27:55,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:27:55,300 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:27:55,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-16 04:27:55,512 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 [2023-12-16 04:27:55,512 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:27:55,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:27:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash -121245385, now seen corresponding path program 1 times [2023-12-16 04:27:55,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:27:55,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605008069] [2023-12-16 04:27:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:27:55,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:27:55,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701575972] [2023-12-16 04:27:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:27:55,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:27:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:27:55,603 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) [2023-12-16 04:27:55,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-16 04:27:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:27:56,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 04:27:56,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:27:57,422 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 [2023-12-16 04:27:58,881 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 [2023-12-16 04:27:58,890 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 [2023-12-16 04:27:59,335 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 28 treesize of output 16 [2023-12-16 04:27:59,354 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 [2023-12-16 04:27:59,374 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 [2023-12-16 04:27:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 7 proven. 309 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-16 04:27:59,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:28:00,871 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 61 treesize of output 37 [2023-12-16 04:28:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:28:00,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:28:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605008069] [2023-12-16 04:28:00,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:28:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701575972] [2023-12-16 04:28:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701575972] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:28:00,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:28:00,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-16 04:28:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235116531] [2023-12-16 04:28:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:28:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:28:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:28:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:28:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:28:00,993 INFO L87 Difference]: Start difference. First operand 262 states and 369 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:28:01,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:28:01,916 INFO L93 Difference]: Finished difference Result 672 states and 943 transitions. [2023-12-16 04:28:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:28:01,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-16 04:28:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:28:01,919 INFO L225 Difference]: With dead ends: 672 [2023-12-16 04:28:01,919 INFO L226 Difference]: Without dead ends: 411 [2023-12-16 04:28:01,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:28:01,920 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 242 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:28:01,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 632 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:28:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-16 04:28:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 279. [2023-12-16 04:28:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 257 states have (on average 1.377431906614786) internal successors, (354), 257 states have internal predecessors, (354), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 04:28:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 388 transitions. [2023-12-16 04:28:01,932 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 388 transitions. Word has length 152 [2023-12-16 04:28:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:28:01,940 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 388 transitions. [2023-12-16 04:28:01,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 04:28:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 388 transitions. [2023-12-16 04:28:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:28:01,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:28:01,941 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:01,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-16 04:28:02,148 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 [2023-12-16 04:28:02,148 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:28:02,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:28:02,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1685957235, now seen corresponding path program 1 times [2023-12-16 04:28:02,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:28:02,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551506311] [2023-12-16 04:28:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:28:02,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:28:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461121878] [2023-12-16 04:28:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:28:02,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:28:02,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:28:02,206 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) [2023-12-16 04:28:02,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-16 04:28:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:28:02,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-16 04:28:02,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:28:02,747 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 [2023-12-16 04:28:05,547 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 [2023-12-16 04:28:08,433 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 [2023-12-16 04:28:08,443 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 [2023-12-16 04:28:09,331 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 [2023-12-16 04:28:09,519 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 23 treesize of output 15 [2023-12-16 04:28:09,528 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 Received shutdown request... [2023-12-16 04:28:09,860 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:28:09,860 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:28:10,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-16 04:28:11,030 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:28:11,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 04:28:11,030 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 153 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-16 04:28:11,033 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:28:11,035 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:28:11,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:28:11 BoogieIcfgContainer [2023-12-16 04:28:11,036 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:28:11,036 INFO L158 Benchmark]: Toolchain (without parser) took 84187.30ms. Allocated memory was 284.2MB in the beginning and 411.0MB in the end (delta: 126.9MB). Free memory was 228.4MB in the beginning and 241.1MB in the end (delta: -12.7MB). Peak memory consumption was 115.2MB. Max. memory is 8.0GB. [2023-12-16 04:28:11,036 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 194.0MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:28:11,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.40ms. Allocated memory is still 284.2MB. Free memory was 228.4MB in the beginning and 212.1MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 04:28:11,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.29ms. Allocated memory is still 284.2MB. Free memory was 212.1MB in the beginning and 207.4MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 04:28:11,037 INFO L158 Benchmark]: Boogie Preprocessor took 135.52ms. Allocated memory is still 284.2MB. Free memory was 207.4MB in the beginning and 200.6MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 04:28:11,037 INFO L158 Benchmark]: RCFGBuilder took 1092.87ms. Allocated memory is still 284.2MB. Free memory was 200.6MB in the beginning and 146.1MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-12-16 04:28:11,037 INFO L158 Benchmark]: TraceAbstraction took 82362.52ms. Allocated memory was 284.2MB in the beginning and 411.0MB in the end (delta: 126.9MB). Free memory was 145.0MB in the beginning and 241.1MB in the end (delta: -96.1MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. [2023-12-16 04:28:11,038 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 194.0MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 527.40ms. Allocated memory is still 284.2MB. Free memory was 228.4MB in the beginning and 212.1MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.29ms. Allocated memory is still 284.2MB. Free memory was 212.1MB in the beginning and 207.4MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 135.52ms. Allocated memory is still 284.2MB. Free memory was 207.4MB in the beginning and 200.6MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1092.87ms. Allocated memory is still 284.2MB. Free memory was 200.6MB in the beginning and 146.1MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * TraceAbstraction took 82362.52ms. Allocated memory was 284.2MB in the beginning and 411.0MB in the end (delta: 126.9MB). Free memory was 145.0MB in the beginning and 241.1MB in the end (delta: -96.1MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 153 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 82.3s, OverallIterations: 25, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 34.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 8859 SdHoareTripleChecker+Valid, 27.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8858 mSDsluCounter, 33280 SdHoareTripleChecker+Invalid, 25.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26192 mSDsCounter, 583 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6586 IncrementalHoareTripleChecker+Invalid, 7173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 583 mSolverCounterUnsat, 7088 mSDtfsCounter, 6586 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4095 GetRequests, 3798 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=348occurred in iteration=20, InterpolantAutomatonStates: 233, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 24 MinimizatonAttempts, 2944 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 3754 NumberOfCodeBlocks, 3754 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3882 ConstructedInterpolants, 7 QuantifiedInterpolants, 13613 SizeOfPredicates, 357 NumberOfNonLiveVariables, 17396 ConjunctsInSsa, 477 ConjunctsInUnsatCore, 26 InterpolantComputations, 21 PerfectInterpolantSequences, 12960/14144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown