/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:48:00,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:48:00,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 16:48:00,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:48:00,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:48:00,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:48:00,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:48:00,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:48:00,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:48:00,481 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:48:00,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:48:00,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:48:00,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:48:00,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:48:00,484 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:48:00,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:48:00,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:48:00,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:48:00,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:48:00,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:48:00,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:48:00,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:48:00,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:48:00,487 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:48:00,488 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:48:00,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:48:00,488 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:48:00,488 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:48:00,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:48:00,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:48:00,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:48:00,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:48:00,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:48:00,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:48:00,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:48:00,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:48:00,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:48:00,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:48:00,491 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:48:00,491 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:48:00,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:48:00,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:48:00,492 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:48:00,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:48:00,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:48:00,493 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:48:00,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:48:00,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:48:00,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:48:00,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:48:00,768 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:48:00,768 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:48:00,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-6.i [2023-12-24 16:48:01,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:48:02,127 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:48:02,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-6.i [2023-12-24 16:48:02,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4042282/4a5019b1ce304b54aa8b66c7e88bb589/FLAG4bdb99984 [2023-12-24 16:48:02,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4042282/4a5019b1ce304b54aa8b66c7e88bb589 [2023-12-24 16:48:02,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:48:02,158 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:48:02,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:48:02,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:48:02,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:48:02,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a189278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02, skipping insertion in model container [2023-12-24 16:48:02,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,192 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:48:02,321 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-6.i[915,928] [2023-12-24 16:48:02,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:48:02,425 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:48:02,437 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-6.i[915,928] [2023-12-24 16:48:02,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:48:02,512 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:48:02,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02 WrapperNode [2023-12-24 16:48:02,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:48:02,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:48:02,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:48:02,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:48:02,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,591 INFO L138 Inliner]: procedures = 36, calls = 181, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 553 [2023-12-24 16:48:02,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:48:02,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:48:02,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:48:02,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:48:02,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,615 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,665 INFO L175 MemorySlicer]: Split 135 memory accesses to 17 slices as follows [2, 5, 9, 13, 8, 6, 8, 8, 8, 8, 14, 4, 6, 6, 14, 8, 8]. 10 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 18 writes are split as follows [0, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. [2023-12-24 16:48:02,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:48:02,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:48:02,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:48:02,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:48:02,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (1/1) ... [2023-12-24 16:48:02,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:48:02,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:48:02,780 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) [2023-12-24 16:48:02,782 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 [2023-12-24 16:48:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:48:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2023-12-24 16:48:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#10 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#11 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#12 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#13 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#14 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#15 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#16 [2023-12-24 16:48:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 16:48:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#10 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#11 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#12 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#13 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#14 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#15 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#16 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:48:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:48:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#15 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#16 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:48:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 16:48:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#15 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#16 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:48:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#15 [2023-12-24 16:48:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#16 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:48:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#14 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#15 [2023-12-24 16:48:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#16 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 16:48:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#10 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#11 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#12 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#13 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#14 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#15 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#16 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:48:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:48:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:48:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 16:48:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2023-12-24 16:48:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#14 [2023-12-24 16:48:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#15 [2023-12-24 16:48:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#16 [2023-12-24 16:48:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:48:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:48:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:48:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:48:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:48:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:48:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:48:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:48:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#15 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#16 [2023-12-24 16:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:48:02,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:48:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:48:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 16:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 16:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#15 [2023-12-24 16:48:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#16 [2023-12-24 16:48:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:48:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:48:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 16:48:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#15 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#16 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:48:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:48:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:48:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:48:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:48:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:48:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:48:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:48:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 16:48:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2023-12-24 16:48:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#14 [2023-12-24 16:48:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#15 [2023-12-24 16:48:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#16 [2023-12-24 16:48:03,134 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:48:03,136 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:48:06,955 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:48:07,002 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:48:07,002 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:48:07,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:48:07 BoogieIcfgContainer [2023-12-24 16:48:07,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:48:07,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:48:07,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:48:07,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:48:07,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:48:02" (1/3) ... [2023-12-24 16:48:07,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d596cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:48:07, skipping insertion in model container [2023-12-24 16:48:07,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:48:02" (2/3) ... [2023-12-24 16:48:07,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d596cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:48:07, skipping insertion in model container [2023-12-24 16:48:07,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:48:07" (3/3) ... [2023-12-24 16:48:07,009 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-6.i [2023-12-24 16:48:07,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:48:07,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:48:07,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:48:07,081 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;@3848b660, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:48:07,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:48:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 94 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 16:48:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:48:07,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:07,111 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:07,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:07,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash -601994658, now seen corresponding path program 1 times [2023-12-24 16:48:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:07,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356750404] [2023-12-24 16:48:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:07,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:07,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:07,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:07,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 16:48:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:07,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:48:07,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-12-24 16:48:07,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:07,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356750404] [2023-12-24 16:48:07,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356750404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:07,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:07,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:48:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491562797] [2023-12-24 16:48:07,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:07,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:48:07,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:48:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:48:07,771 INFO L87 Difference]: Start difference. First operand has 115 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 94 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:07,852 INFO L93 Difference]: Finished difference Result 227 states and 361 transitions. [2023-12-24 16:48:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:48:07,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2023-12-24 16:48:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:07,862 INFO L225 Difference]: With dead ends: 227 [2023-12-24 16:48:07,862 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 16:48:07,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:48:07,868 INFO L413 NwaCegarLoop]: 163 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, 163 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 [2023-12-24 16:48:07,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:48:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 16:48:07,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-24 16:48:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 16:48:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 167 transitions. [2023-12-24 16:48:07,928 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 167 transitions. Word has length 153 [2023-12-24 16:48:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:07,929 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 167 transitions. [2023-12-24 16:48:07,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 167 transitions. [2023-12-24 16:48:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:48:07,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:07,935 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:07,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:08,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:08,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:08,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -753430148, now seen corresponding path program 1 times [2023-12-24 16:48:08,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:08,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477723203] [2023-12-24 16:48:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:08,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:08,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:08,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:08,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 16:48:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:08,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:48:08,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 16:48:08,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:08,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:08,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477723203] [2023-12-24 16:48:08,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477723203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:08,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:08,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:48:08,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414937782] [2023-12-24 16:48:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:08,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:48:08,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:48:08,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:48:08,739 INFO L87 Difference]: Start difference. First operand 113 states and 167 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:08,863 INFO L93 Difference]: Finished difference Result 231 states and 342 transitions. [2023-12-24 16:48:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:48:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2023-12-24 16:48:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:08,865 INFO L225 Difference]: With dead ends: 231 [2023-12-24 16:48:08,865 INFO L226 Difference]: Without dead ends: 119 [2023-12-24 16:48:08,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:48:08,867 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 10 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:08,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 478 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:48:08,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-24 16:48:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2023-12-24 16:48:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 94 states have internal predecessors, (131), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 16:48:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 169 transitions. [2023-12-24 16:48:08,890 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 169 transitions. Word has length 153 [2023-12-24 16:48:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:08,890 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 169 transitions. [2023-12-24 16:48:08,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 169 transitions. [2023-12-24 16:48:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:48:08,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:08,896 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:08,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:09,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:09,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:09,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1644040382, now seen corresponding path program 1 times [2023-12-24 16:48:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:09,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252501880] [2023-12-24 16:48:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:09,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:09,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:09,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:09,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 16:48:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:09,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:48:09,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:48:10,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:10,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252501880] [2023-12-24 16:48:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252501880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:48:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001664995] [2023-12-24 16:48:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:10,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:48:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:48:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:48:10,220 INFO L87 Difference]: Start difference. First operand 115 states and 169 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:10,470 INFO L93 Difference]: Finished difference Result 343 states and 505 transitions. [2023-12-24 16:48:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:48:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-12-24 16:48:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:10,472 INFO L225 Difference]: With dead ends: 343 [2023-12-24 16:48:10,473 INFO L226 Difference]: Without dead ends: 229 [2023-12-24 16:48:10,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:48:10,474 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 87 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:10,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 459 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:48:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-24 16:48:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2023-12-24 16:48:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 184 states have (on average 1.391304347826087) internal successors, (256), 184 states have internal predecessors, (256), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 332 transitions. [2023-12-24 16:48:10,495 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 332 transitions. Word has length 153 [2023-12-24 16:48:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:10,496 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 332 transitions. [2023-12-24 16:48:10,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 332 transitions. [2023-12-24 16:48:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:48:10,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:10,498 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:10,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:10,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:10,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash -350104324, now seen corresponding path program 1 times [2023-12-24 16:48:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918596919] [2023-12-24 16:48:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:10,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:10,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 16:48:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:11,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:48:11,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:48:11,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:11,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:11,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918596919] [2023-12-24 16:48:11,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918596919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:11,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:11,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:48:11,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523474464] [2023-12-24 16:48:11,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:11,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:48:11,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:48:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:48:11,732 INFO L87 Difference]: Start difference. First operand 225 states and 332 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:11,949 INFO L93 Difference]: Finished difference Result 453 states and 667 transitions. [2023-12-24 16:48:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:48:11,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-12-24 16:48:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:11,952 INFO L225 Difference]: With dead ends: 453 [2023-12-24 16:48:11,952 INFO L226 Difference]: Without dead ends: 229 [2023-12-24 16:48:11,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:48:11,953 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 120 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:11,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 464 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:48:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-24 16:48:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2023-12-24 16:48:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 184 states have (on average 1.3858695652173914) internal successors, (255), 184 states have internal predecessors, (255), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 331 transitions. [2023-12-24 16:48:11,972 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 331 transitions. Word has length 153 [2023-12-24 16:48:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:11,973 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 331 transitions. [2023-12-24 16:48:11,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 331 transitions. [2023-12-24 16:48:11,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:48:11,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:11,975 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:11,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:12,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:12,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:12,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1361221574, now seen corresponding path program 1 times [2023-12-24 16:48:12,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:12,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483288867] [2023-12-24 16:48:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:12,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:12,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:12,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:12,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 16:48:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:12,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:48:12,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:48:12,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:12,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483288867] [2023-12-24 16:48:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483288867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:12,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:12,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:48:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699692633] [2023-12-24 16:48:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:12,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:48:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:48:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:48:12,614 INFO L87 Difference]: Start difference. First operand 225 states and 331 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:12,679 INFO L93 Difference]: Finished difference Result 495 states and 729 transitions. [2023-12-24 16:48:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:48:12,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-12-24 16:48:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:12,682 INFO L225 Difference]: With dead ends: 495 [2023-12-24 16:48:12,682 INFO L226 Difference]: Without dead ends: 271 [2023-12-24 16:48:12,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:48:12,684 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 43 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:12,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 472 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:48:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-24 16:48:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 229. [2023-12-24 16:48:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 188 states have (on average 1.377659574468085) internal successors, (259), 188 states have internal predecessors, (259), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 335 transitions. [2023-12-24 16:48:12,702 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 335 transitions. Word has length 153 [2023-12-24 16:48:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:12,702 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 335 transitions. [2023-12-24 16:48:12,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 335 transitions. [2023-12-24 16:48:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 16:48:12,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:12,704 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:12,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-24 16:48:12,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:12,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:12,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1612908360, now seen corresponding path program 1 times [2023-12-24 16:48:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:12,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642195663] [2023-12-24 16:48:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:12,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:12,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:12,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:12,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 16:48:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:13,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:48:13,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:13,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:48:13,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 67 [2023-12-24 16:48:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-12-24 16:48:13,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:13,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642195663] [2023-12-24 16:48:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642195663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:48:13,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544412294] [2023-12-24 16:48:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:13,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:48:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:13,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:48:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:48:13,562 INFO L87 Difference]: Start difference. First operand 229 states and 335 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:16,619 INFO L93 Difference]: Finished difference Result 469 states and 687 transitions. [2023-12-24 16:48:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:48:16,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2023-12-24 16:48:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:16,629 INFO L225 Difference]: With dead ends: 469 [2023-12-24 16:48:16,629 INFO L226 Difference]: Without dead ends: 241 [2023-12-24 16:48:16,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:48:16,631 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 153 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:16,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 518 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 16:48:16,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-24 16:48:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 229. [2023-12-24 16:48:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 188 states have (on average 1.3670212765957446) internal successors, (257), 188 states have internal predecessors, (257), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 333 transitions. [2023-12-24 16:48:16,645 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 333 transitions. Word has length 155 [2023-12-24 16:48:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:16,645 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 333 transitions. [2023-12-24 16:48:16,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 333 transitions. [2023-12-24 16:48:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 16:48:16,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:16,647 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:16,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:16,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:16,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:16,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1295278478, now seen corresponding path program 1 times [2023-12-24 16:48:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:16,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453511663] [2023-12-24 16:48:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:16,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:16,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:16,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:16,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 16:48:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:17,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:48:17,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:17,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:48:17,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 65 [2023-12-24 16:48:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 16:48:17,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:17,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453511663] [2023-12-24 16:48:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453511663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:17,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:17,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:48:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901734794] [2023-12-24 16:48:17,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:48:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:17,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:48:17,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:48:17,533 INFO L87 Difference]: Start difference. First operand 229 states and 333 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:19,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 16:48:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:21,158 INFO L93 Difference]: Finished difference Result 465 states and 677 transitions. [2023-12-24 16:48:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:48:21,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2023-12-24 16:48:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:21,166 INFO L225 Difference]: With dead ends: 465 [2023-12-24 16:48:21,166 INFO L226 Difference]: Without dead ends: 237 [2023-12-24 16:48:21,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:48:21,168 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 159 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:21,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 509 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-24 16:48:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-24 16:48:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 225. [2023-12-24 16:48:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 184 states have (on average 1.3641304347826086) internal successors, (251), 184 states have internal predecessors, (251), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 327 transitions. [2023-12-24 16:48:21,187 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 327 transitions. Word has length 157 [2023-12-24 16:48:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:21,187 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 327 transitions. [2023-12-24 16:48:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 327 transitions. [2023-12-24 16:48:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 16:48:21,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:21,189 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:21,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:21,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:21,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:21,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1849018042, now seen corresponding path program 1 times [2023-12-24 16:48:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450442607] [2023-12-24 16:48:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:21,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:21,405 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:21,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 16:48:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:21,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:48:21,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:22,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:48:22,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 64 [2023-12-24 16:48:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 360 proven. 32 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 16:48:22,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:22,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:48:22,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 1 [2023-12-24 16:48:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 16:48:22,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:22,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450442607] [2023-12-24 16:48:22,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450442607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:48:22,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:48:22,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 16:48:22,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220300691] [2023-12-24 16:48:22,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:48:22,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:48:22,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:48:22,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:48:22,386 INFO L87 Difference]: Start difference. First operand 225 states and 327 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 12 states have internal predecessors, (97), 4 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) [2023-12-24 16:48:24,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:48:26,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:48:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:27,626 INFO L93 Difference]: Finished difference Result 475 states and 683 transitions. [2023-12-24 16:48:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:48:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 12 states have internal predecessors, (97), 4 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) Word has length 159 [2023-12-24 16:48:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:27,629 INFO L225 Difference]: With dead ends: 475 [2023-12-24 16:48:27,629 INFO L226 Difference]: Without dead ends: 229 [2023-12-24 16:48:27,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:48:27,634 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 148 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:27,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 551 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-24 16:48:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-24 16:48:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2023-12-24 16:48:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 184 states have (on average 1.3423913043478262) internal successors, (247), 184 states have internal predecessors, (247), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 323 transitions. [2023-12-24 16:48:27,658 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 323 transitions. Word has length 159 [2023-12-24 16:48:27,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:27,658 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 323 transitions. [2023-12-24 16:48:27,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 12 states have internal predecessors, (97), 4 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) [2023-12-24 16:48:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 323 transitions. [2023-12-24 16:48:27,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 16:48:27,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:27,660 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:27,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:27,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:27,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:27,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1056655240, now seen corresponding path program 1 times [2023-12-24 16:48:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626361156] [2023-12-24 16:48:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:27,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:27,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 16:48:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:28,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:48:28,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:28,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:48:28,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 65 [2023-12-24 16:48:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:48:28,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:28,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626361156] [2023-12-24 16:48:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626361156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:28,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:28,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:48:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923020659] [2023-12-24 16:48:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:28,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:48:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:48:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:48:28,649 INFO L87 Difference]: Start difference. First operand 225 states and 323 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:32,306 INFO L93 Difference]: Finished difference Result 461 states and 663 transitions. [2023-12-24 16:48:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:48:32,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2023-12-24 16:48:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:32,308 INFO L225 Difference]: With dead ends: 461 [2023-12-24 16:48:32,308 INFO L226 Difference]: Without dead ends: 237 [2023-12-24 16:48:32,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:48:32,310 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 133 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:32,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 502 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-24 16:48:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-24 16:48:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 225. [2023-12-24 16:48:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 184 states have (on average 1.3315217391304348) internal successors, (245), 184 states have internal predecessors, (245), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 321 transitions. [2023-12-24 16:48:32,321 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 321 transitions. Word has length 159 [2023-12-24 16:48:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:32,321 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 321 transitions. [2023-12-24 16:48:32,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:48:32,321 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 321 transitions. [2023-12-24 16:48:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-24 16:48:32,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:32,323 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:32,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:32,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:32,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:32,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash -477043762, now seen corresponding path program 1 times [2023-12-24 16:48:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:32,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290414590] [2023-12-24 16:48:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:32,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:32,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:32,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 16:48:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:33,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:48:33,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:33,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:48:34,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:48:34,150 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 63 treesize of output 39 [2023-12-24 16:48:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 39 proven. 354 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-12-24 16:48:34,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:48:34,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:34,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290414590] [2023-12-24 16:48:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290414590] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:48:34,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:48:34,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 21 [2023-12-24 16:48:34,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864984927] [2023-12-24 16:48:34,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:34,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:48:34,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:48:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:48:34,538 INFO L87 Difference]: Start difference. First operand 225 states and 321 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:37,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:48:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:37,345 INFO L93 Difference]: Finished difference Result 720 states and 1021 transitions. [2023-12-24 16:48:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:48:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 161 [2023-12-24 16:48:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:37,349 INFO L225 Difference]: With dead ends: 720 [2023-12-24 16:48:37,349 INFO L226 Difference]: Without dead ends: 496 [2023-12-24 16:48:37,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:48:37,350 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 263 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:37,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1200 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 16:48:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-24 16:48:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 415. [2023-12-24 16:48:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 350 states have (on average 1.3371428571428572) internal successors, (468), 352 states have internal predecessors, (468), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:48:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 588 transitions. [2023-12-24 16:48:37,371 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 588 transitions. Word has length 161 [2023-12-24 16:48:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:37,371 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 588 transitions. [2023-12-24 16:48:37,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 588 transitions. [2023-12-24 16:48:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-24 16:48:37,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:37,374 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:37,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:37,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:37,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:37,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1426295175, now seen corresponding path program 1 times [2023-12-24 16:48:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747342094] [2023-12-24 16:48:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:37,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:37,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:37,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:37,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 16:48:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:38,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 16:48:38,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:40,861 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-12-24 16:48:40,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-24 16:48:42,206 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 [2023-12-24 16:48:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 16 proven. 184 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-24 16:48:42,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:48:48,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:48,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747342094] [2023-12-24 16:48:48,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747342094] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:48:48,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:48:48,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 22 [2023-12-24 16:48:48,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362227762] [2023-12-24 16:48:48,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:48,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:48:48,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:48,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:48:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:48:48,283 INFO L87 Difference]: Start difference. First operand 415 states and 588 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:56,767 INFO L93 Difference]: Finished difference Result 1047 states and 1482 transitions. [2023-12-24 16:48:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:48:56,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 161 [2023-12-24 16:48:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:56,784 INFO L225 Difference]: With dead ends: 1047 [2023-12-24 16:48:56,784 INFO L226 Difference]: Without dead ends: 633 [2023-12-24 16:48:56,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:48:56,786 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 188 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:56,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 912 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-24 16:48:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-24 16:48:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 431. [2023-12-24 16:48:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 366 states have (on average 1.3278688524590163) internal successors, (486), 368 states have internal predecessors, (486), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:48:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 606 transitions. [2023-12-24 16:48:56,814 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 606 transitions. Word has length 161 [2023-12-24 16:48:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:56,814 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 606 transitions. [2023-12-24 16:48:56,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:48:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 606 transitions. [2023-12-24 16:48:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:48:56,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:56,816 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:48:56,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:57,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:57,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:57,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:57,030 INFO L85 PathProgramCache]: Analyzing trace with hash 375524843, now seen corresponding path program 1 times [2023-12-24 16:48:57,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:57,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83304282] [2023-12-24 16:48:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:57,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:48:57,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:57,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:48:57,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 16:48:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:57,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:48:57,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:59,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:48:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:48:59,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:59,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83304282] [2023-12-24 16:48:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83304282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:48:59,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:48:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342427859] [2023-12-24 16:48:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:48:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:48:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:48:59,764 INFO L87 Difference]: Start difference. First operand 431 states and 606 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:01,738 INFO L93 Difference]: Finished difference Result 1032 states and 1451 transitions. [2023-12-24 16:49:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:49:01,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 16:49:01,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:01,742 INFO L225 Difference]: With dead ends: 1032 [2023-12-24 16:49:01,742 INFO L226 Difference]: Without dead ends: 602 [2023-12-24 16:49:01,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:49:01,744 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 262 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:01,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1359 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:49:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-12-24 16:49:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 587. [2023-12-24 16:49:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 490 states have (on average 1.316326530612245) internal successors, (645), 493 states have internal predecessors, (645), 90 states have call successors, (90), 6 states have call predecessors, (90), 6 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 16:49:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 825 transitions. [2023-12-24 16:49:01,778 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 825 transitions. Word has length 162 [2023-12-24 16:49:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:01,779 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 825 transitions. [2023-12-24 16:49:01,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 825 transitions. [2023-12-24 16:49:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:49:01,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:01,781 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:01,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:01,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:01,997 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:01,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash 594379561, now seen corresponding path program 1 times [2023-12-24 16:49:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54964843] [2023-12-24 16:49:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:01,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:01,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:01,999 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:02,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 16:49:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:02,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:49:02,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:04,464 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 22 [2023-12-24 16:49:04,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:49:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:04,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:04,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:04,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54964843] [2023-12-24 16:49:04,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54964843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:04,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:04,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 16:49:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555695247] [2023-12-24 16:49:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:04,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:49:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:49:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:49:04,628 INFO L87 Difference]: Start difference. First operand 587 states and 825 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:05,935 INFO L93 Difference]: Finished difference Result 1071 states and 1506 transitions. [2023-12-24 16:49:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:49:05,936 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 16:49:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:05,939 INFO L225 Difference]: With dead ends: 1071 [2023-12-24 16:49:05,939 INFO L226 Difference]: Without dead ends: 641 [2023-12-24 16:49:05,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:49:05,940 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 111 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:05,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1210 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:49:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-12-24 16:49:05,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 621. [2023-12-24 16:49:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 515 states have (on average 1.312621359223301) internal successors, (676), 517 states have internal predecessors, (676), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 16:49:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 872 transitions. [2023-12-24 16:49:05,980 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 872 transitions. Word has length 162 [2023-12-24 16:49:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:05,981 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 872 transitions. [2023-12-24 16:49:05,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 872 transitions. [2023-12-24 16:49:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:49:05,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:05,983 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:06,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:06,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:06,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash -45270708, now seen corresponding path program 1 times [2023-12-24 16:49:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035996440] [2023-12-24 16:49:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:06,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:06,198 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:06,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 16:49:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:06,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:49:06,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:07,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:07,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035996440] [2023-12-24 16:49:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035996440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:07,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:07,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046081171] [2023-12-24 16:49:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:49:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:49:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:49:07,697 INFO L87 Difference]: Start difference. First operand 621 states and 872 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:08,288 INFO L93 Difference]: Finished difference Result 1381 states and 1938 transitions. [2023-12-24 16:49:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:49:08,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 16:49:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:08,292 INFO L225 Difference]: With dead ends: 1381 [2023-12-24 16:49:08,292 INFO L226 Difference]: Without dead ends: 841 [2023-12-24 16:49:08,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:49:08,294 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 193 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:08,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 758 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:49:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-24 16:49:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 833. [2023-12-24 16:49:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 695 states have (on average 1.3079136690647482) internal successors, (909), 698 states have internal predecessors, (909), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1165 transitions. [2023-12-24 16:49:08,365 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1165 transitions. Word has length 162 [2023-12-24 16:49:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:08,365 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1165 transitions. [2023-12-24 16:49:08,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1165 transitions. [2023-12-24 16:49:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:49:08,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:08,367 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:08,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:08,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:08,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2039415414, now seen corresponding path program 1 times [2023-12-24 16:49:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:08,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180217693] [2023-12-24 16:49:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:08,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:08,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:08,581 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:08,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 16:49:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:08,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:49:08,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:08,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-24 16:49:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:08,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:08,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:08,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180217693] [2023-12-24 16:49:08,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180217693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:08,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:08,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:08,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547207836] [2023-12-24 16:49:08,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:08,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:49:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:49:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:49:08,998 INFO L87 Difference]: Start difference. First operand 833 states and 1165 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:09,207 INFO L93 Difference]: Finished difference Result 2639 states and 3711 transitions. [2023-12-24 16:49:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:49:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 16:49:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:09,215 INFO L225 Difference]: With dead ends: 2639 [2023-12-24 16:49:09,215 INFO L226 Difference]: Without dead ends: 1887 [2023-12-24 16:49:09,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:49:09,219 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 269 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:09,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1361 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:49:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2023-12-24 16:49:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 860. [2023-12-24 16:49:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 722 states have (on average 1.3102493074792243) internal successors, (946), 725 states have internal predecessors, (946), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1202 transitions. [2023-12-24 16:49:09,309 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1202 transitions. Word has length 162 [2023-12-24 16:49:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:09,310 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1202 transitions. [2023-12-24 16:49:09,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1202 transitions. [2023-12-24 16:49:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:49:09,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:09,312 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:09,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:09,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:09,524 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:09,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1452609400, now seen corresponding path program 1 times [2023-12-24 16:49:09,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:09,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618777290] [2023-12-24 16:49:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:09,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:09,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:09,526 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:09,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 16:49:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:09,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:49:09,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:10,974 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-12-24 16:49:10,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-24 16:49:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:11,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:11,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618777290] [2023-12-24 16:49:11,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618777290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:11,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:11,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:11,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836133495] [2023-12-24 16:49:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:11,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:49:11,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:11,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:49:11,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:49:11,110 INFO L87 Difference]: Start difference. First operand 860 states and 1202 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:11,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:11,873 INFO L93 Difference]: Finished difference Result 1710 states and 2392 transitions. [2023-12-24 16:49:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:49:11,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 16:49:11,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:11,877 INFO L225 Difference]: With dead ends: 1710 [2023-12-24 16:49:11,878 INFO L226 Difference]: Without dead ends: 931 [2023-12-24 16:49:11,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:49:11,880 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 329 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:11,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 916 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:49:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-24 16:49:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 851. [2023-12-24 16:49:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 713 states have (on average 1.305750350631136) internal successors, (931), 716 states have internal predecessors, (931), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1187 transitions. [2023-12-24 16:49:11,940 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1187 transitions. Word has length 162 [2023-12-24 16:49:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:11,940 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1187 transitions. [2023-12-24 16:49:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1187 transitions. [2023-12-24 16:49:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:49:11,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:11,941 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:11,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:12,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:12,153 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:12,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1850709042, now seen corresponding path program 1 times [2023-12-24 16:49:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9918117] [2023-12-24 16:49:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:12,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:12,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:12,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 16:49:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:12,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:49:12,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:13,668 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 22 [2023-12-24 16:49:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:13,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:13,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:13,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9918117] [2023-12-24 16:49:13,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9918117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:13,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:13,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:49:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343947871] [2023-12-24 16:49:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:49:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:49:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:49:13,756 INFO L87 Difference]: Start difference. First operand 851 states and 1187 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:14,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:14,575 INFO L93 Difference]: Finished difference Result 1338 states and 1869 transitions. [2023-12-24 16:49:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:49:14,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 16:49:14,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:14,580 INFO L225 Difference]: With dead ends: 1338 [2023-12-24 16:49:14,580 INFO L226 Difference]: Without dead ends: 884 [2023-12-24 16:49:14,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:49:14,582 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 91 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:14,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 878 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:49:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-12-24 16:49:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 864. [2023-12-24 16:49:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 726 states have (on average 1.3071625344352618) internal successors, (949), 729 states have internal predecessors, (949), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1205 transitions. [2023-12-24 16:49:14,644 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1205 transitions. Word has length 162 [2023-12-24 16:49:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:14,644 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1205 transitions. [2023-12-24 16:49:14,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:14,645 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1205 transitions. [2023-12-24 16:49:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:49:14,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:14,646 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:14,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:14,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:14,859 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:14,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:14,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1036919562, now seen corresponding path program 1 times [2023-12-24 16:49:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125120592] [2023-12-24 16:49:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:14,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:14,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:14,861 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:14,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 16:49:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:15,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:49:15,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:15,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:49:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:15,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:15,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125120592] [2023-12-24 16:49:15,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125120592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:15,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:15,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:15,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278740408] [2023-12-24 16:49:15,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:15,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:49:15,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:15,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:49:15,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:49:15,655 INFO L87 Difference]: Start difference. First operand 864 states and 1205 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:16,280 INFO L93 Difference]: Finished difference Result 1811 states and 2537 transitions. [2023-12-24 16:49:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:49:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 16:49:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:16,286 INFO L225 Difference]: With dead ends: 1811 [2023-12-24 16:49:16,286 INFO L226 Difference]: Without dead ends: 1357 [2023-12-24 16:49:16,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:49:16,288 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 295 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:16,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 767 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:49:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2023-12-24 16:49:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 864. [2023-12-24 16:49:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 726 states have (on average 1.3044077134986225) internal successors, (947), 729 states have internal predecessors, (947), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1203 transitions. [2023-12-24 16:49:16,369 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1203 transitions. Word has length 162 [2023-12-24 16:49:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:16,370 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1203 transitions. [2023-12-24 16:49:16,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1203 transitions. [2023-12-24 16:49:16,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 16:49:16,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:16,371 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:16,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:16,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:16,584 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:16,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:16,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1012035924, now seen corresponding path program 1 times [2023-12-24 16:49:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686707977] [2023-12-24 16:49:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:16,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:16,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:16,586 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:16,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 16:49:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:17,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:49:17,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:18,729 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-12-24 16:49:18,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-24 16:49:18,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:49:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:18,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:18,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:18,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686707977] [2023-12-24 16:49:18,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686707977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:18,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:18,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:49:18,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371104294] [2023-12-24 16:49:18,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:18,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:49:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:49:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:49:18,918 INFO L87 Difference]: Start difference. First operand 864 states and 1203 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:20,426 INFO L93 Difference]: Finished difference Result 1650 states and 2298 transitions. [2023-12-24 16:49:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:49:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 163 [2023-12-24 16:49:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:20,429 INFO L225 Difference]: With dead ends: 1650 [2023-12-24 16:49:20,430 INFO L226 Difference]: Without dead ends: 880 [2023-12-24 16:49:20,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:49:20,432 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 357 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:20,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1212 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:49:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-12-24 16:49:20,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 864. [2023-12-24 16:49:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 726 states have (on average 1.303030303030303) internal successors, (946), 729 states have internal predecessors, (946), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1202 transitions. [2023-12-24 16:49:20,503 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1202 transitions. Word has length 163 [2023-12-24 16:49:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:20,503 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1202 transitions. [2023-12-24 16:49:20,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1202 transitions. [2023-12-24 16:49:20,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 16:49:20,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:20,505 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:20,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:20,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:20,720 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:20,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash -793402410, now seen corresponding path program 1 times [2023-12-24 16:49:20,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:20,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927903203] [2023-12-24 16:49:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:20,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:20,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:20,722 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:20,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 16:49:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:21,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:49:21,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:22,889 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 22 [2023-12-24 16:49:22,958 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-12-24 16:49:22,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-12-24 16:49:23,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:49:23,086 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 18 treesize of output 10 [2023-12-24 16:49:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:23,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:23,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:23,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927903203] [2023-12-24 16:49:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927903203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:23,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:23,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 16:49:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411842722] [2023-12-24 16:49:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:49:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:49:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:49:23,131 INFO L87 Difference]: Start difference. First operand 864 states and 1202 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:24,686 INFO L93 Difference]: Finished difference Result 1394 states and 1939 transitions. [2023-12-24 16:49:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:49:24,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 163 [2023-12-24 16:49:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:24,691 INFO L225 Difference]: With dead ends: 1394 [2023-12-24 16:49:24,691 INFO L226 Difference]: Without dead ends: 940 [2023-12-24 16:49:24,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:49:24,693 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 218 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:24,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1300 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:49:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-12-24 16:49:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 868. [2023-12-24 16:49:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 730 states have (on average 1.3013698630136987) internal successors, (950), 733 states have internal predecessors, (950), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1206 transitions. [2023-12-24 16:49:24,786 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1206 transitions. Word has length 163 [2023-12-24 16:49:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:24,787 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1206 transitions. [2023-12-24 16:49:24,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1206 transitions. [2023-12-24 16:49:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 16:49:24,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:24,788 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:24,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:25,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:25,008 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:25,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1130450052, now seen corresponding path program 1 times [2023-12-24 16:49:25,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:25,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239828558] [2023-12-24 16:49:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:25,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:25,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:25,010 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:25,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:49:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:25,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:49:25,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:25,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:25,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:25,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239828558] [2023-12-24 16:49:25,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239828558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:25,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:25,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:49:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839319184] [2023-12-24 16:49:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:25,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:49:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:25,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:49:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:49:25,411 INFO L87 Difference]: Start difference. First operand 868 states and 1206 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:25,523 INFO L93 Difference]: Finished difference Result 1722 states and 2398 transitions. [2023-12-24 16:49:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:49:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 163 [2023-12-24 16:49:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:25,528 INFO L225 Difference]: With dead ends: 1722 [2023-12-24 16:49:25,528 INFO L226 Difference]: Without dead ends: 952 [2023-12-24 16:49:25,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:49:25,530 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 45 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:25,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 613 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:49:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-24 16:49:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 889. [2023-12-24 16:49:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 751 states have (on average 1.292942743009321) internal successors, (971), 754 states have internal predecessors, (971), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1227 transitions. [2023-12-24 16:49:25,607 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1227 transitions. Word has length 163 [2023-12-24 16:49:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:25,607 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1227 transitions. [2023-12-24 16:49:25,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:25,608 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1227 transitions. [2023-12-24 16:49:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 16:49:25,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:25,609 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:25,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:25,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:25,821 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:25,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash -418481975, now seen corresponding path program 1 times [2023-12-24 16:49:25,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:25,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806622867] [2023-12-24 16:49:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:25,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:25,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:25,823 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:25,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 16:49:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:26,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:49:26,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:26,396 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 22 treesize of output 14 [2023-12-24 16:49:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:26,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:26,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:26,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806622867] [2023-12-24 16:49:26,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806622867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:26,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:26,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:26,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696310353] [2023-12-24 16:49:26,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:26,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:49:26,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:49:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:49:26,452 INFO L87 Difference]: Start difference. First operand 889 states and 1227 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:29,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:49:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:30,012 INFO L93 Difference]: Finished difference Result 1680 states and 2320 transitions. [2023-12-24 16:49:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:49:30,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 163 [2023-12-24 16:49:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:30,018 INFO L225 Difference]: With dead ends: 1680 [2023-12-24 16:49:30,018 INFO L226 Difference]: Without dead ends: 1000 [2023-12-24 16:49:30,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:49:30,021 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 375 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:30,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 538 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-24 16:49:30,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-24 16:49:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 878. [2023-12-24 16:49:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 740 states have (on average 1.287837837837838) internal successors, (953), 743 states have internal predecessors, (953), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1209 transitions. [2023-12-24 16:49:30,093 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1209 transitions. Word has length 163 [2023-12-24 16:49:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:30,093 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1209 transitions. [2023-12-24 16:49:30,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1209 transitions. [2023-12-24 16:49:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:30,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:30,095 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:30,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:30,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:30,311 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:30,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 354314410, now seen corresponding path program 1 times [2023-12-24 16:49:30,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:30,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854040328] [2023-12-24 16:49:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:30,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:30,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:30,313 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:30,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 16:49:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:30,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:49:30,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:31,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:49:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:31,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:31,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:31,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854040328] [2023-12-24 16:49:31,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854040328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:31,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:31,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:31,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406203428] [2023-12-24 16:49:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:31,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:49:31,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:31,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:49:31,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:49:31,824 INFO L87 Difference]: Start difference. First operand 878 states and 1209 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:32,634 INFO L93 Difference]: Finished difference Result 1950 states and 2674 transitions. [2023-12-24 16:49:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:49:32,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:32,639 INFO L225 Difference]: With dead ends: 1950 [2023-12-24 16:49:32,639 INFO L226 Difference]: Without dead ends: 1170 [2023-12-24 16:49:32,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:49:32,641 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 243 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:32,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1010 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:49:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-12-24 16:49:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 930. [2023-12-24 16:49:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 792 states have (on average 1.2878787878787878) internal successors, (1020), 795 states have internal predecessors, (1020), 128 states have call successors, (128), 9 states have call predecessors, (128), 9 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:49:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1276 transitions. [2023-12-24 16:49:32,729 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1276 transitions. Word has length 164 [2023-12-24 16:49:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:32,729 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1276 transitions. [2023-12-24 16:49:32,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1276 transitions. [2023-12-24 16:49:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:32,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:32,730 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:32,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:32,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:32,947 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:32,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash 955026289, now seen corresponding path program 1 times [2023-12-24 16:49:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:32,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185727481] [2023-12-24 16:49:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:32,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:32,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:32,949 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:32,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 16:49:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:33,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:49:33,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:34,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:34,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185727481] [2023-12-24 16:49:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185727481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:34,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:34,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:49:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659283165] [2023-12-24 16:49:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:34,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:49:34,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:49:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:49:34,174 INFO L87 Difference]: Start difference. First operand 930 states and 1276 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:34,754 INFO L93 Difference]: Finished difference Result 1450 states and 2007 transitions. [2023-12-24 16:49:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:49:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:34,760 INFO L225 Difference]: With dead ends: 1450 [2023-12-24 16:49:34,760 INFO L226 Difference]: Without dead ends: 1193 [2023-12-24 16:49:34,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:49:34,762 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 196 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:34,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 684 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:49:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-12-24 16:49:34,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1187. [2023-12-24 16:49:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1017 states have (on average 1.2989183874139627) internal successors, (1321), 1021 states have internal predecessors, (1321), 158 states have call successors, (158), 11 states have call predecessors, (158), 11 states have return successors, (158), 154 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-24 16:49:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1637 transitions. [2023-12-24 16:49:34,867 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1637 transitions. Word has length 164 [2023-12-24 16:49:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:34,867 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1637 transitions. [2023-12-24 16:49:34,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1637 transitions. [2023-12-24 16:49:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:34,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:34,869 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:34,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:35,081 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:35,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1377728115, now seen corresponding path program 1 times [2023-12-24 16:49:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:35,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393608659] [2023-12-24 16:49:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:35,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:35,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:35,083 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:35,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 16:49:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:35,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:49:35,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:36,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:36,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:36,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393608659] [2023-12-24 16:49:36,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393608659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:36,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:36,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 16:49:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446006355] [2023-12-24 16:49:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:49:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:49:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:49:36,221 INFO L87 Difference]: Start difference. First operand 1187 states and 1637 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:37,661 INFO L93 Difference]: Finished difference Result 2118 states and 2936 transitions. [2023-12-24 16:49:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:49:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:37,668 INFO L225 Difference]: With dead ends: 2118 [2023-12-24 16:49:37,668 INFO L226 Difference]: Without dead ends: 1645 [2023-12-24 16:49:37,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:49:37,669 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 585 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:37,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1699 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:49:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2023-12-24 16:49:37,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1625. [2023-12-24 16:49:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1391 states have (on average 1.2947519769949676) internal successors, (1801), 1397 states have internal predecessors, (1801), 218 states have call successors, (218), 15 states have call predecessors, (218), 15 states have return successors, (218), 212 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-24 16:49:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2237 transitions. [2023-12-24 16:49:37,779 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2237 transitions. Word has length 164 [2023-12-24 16:49:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:37,779 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2237 transitions. [2023-12-24 16:49:37,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2237 transitions. [2023-12-24 16:49:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:37,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:37,781 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:37,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-24 16:49:37,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:37,996 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:37,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash 356659761, now seen corresponding path program 1 times [2023-12-24 16:49:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:37,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553405907] [2023-12-24 16:49:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:37,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:37,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:37,999 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:37,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 16:49:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:38,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:49:38,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:39,096 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-12-24 16:49:39,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-24 16:49:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:39,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:39,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:39,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553405907] [2023-12-24 16:49:39,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553405907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:39,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:39,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 16:49:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030652726] [2023-12-24 16:49:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:39,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:49:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:49:39,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:49:39,261 INFO L87 Difference]: Start difference. First operand 1625 states and 2237 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:41,156 INFO L93 Difference]: Finished difference Result 2586 states and 3567 transitions. [2023-12-24 16:49:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:49:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:41,161 INFO L225 Difference]: With dead ends: 2586 [2023-12-24 16:49:41,161 INFO L226 Difference]: Without dead ends: 1686 [2023-12-24 16:49:41,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:49:41,163 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 392 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:41,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1552 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:49:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-12-24 16:49:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1625. [2023-12-24 16:49:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1391 states have (on average 1.2925952552120776) internal successors, (1798), 1397 states have internal predecessors, (1798), 218 states have call successors, (218), 15 states have call predecessors, (218), 15 states have return successors, (218), 212 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-24 16:49:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2234 transitions. [2023-12-24 16:49:41,282 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2234 transitions. Word has length 164 [2023-12-24 16:49:41,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:41,282 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2234 transitions. [2023-12-24 16:49:41,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:41,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2234 transitions. [2023-12-24 16:49:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:41,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:41,284 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:41,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:41,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:41,497 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:41,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash 943465775, now seen corresponding path program 1 times [2023-12-24 16:49:41,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:41,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808692399] [2023-12-24 16:49:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:41,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:41,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:41,499 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:41,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 16:49:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:41,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:49:41,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:41,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-24 16:49:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:41,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:41,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808692399] [2023-12-24 16:49:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808692399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:41,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:41,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122548134] [2023-12-24 16:49:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:41,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:49:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:41,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:49:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:49:41,959 INFO L87 Difference]: Start difference. First operand 1625 states and 2234 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:42,319 INFO L93 Difference]: Finished difference Result 4168 states and 5738 transitions. [2023-12-24 16:49:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:49:42,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:42,331 INFO L225 Difference]: With dead ends: 4168 [2023-12-24 16:49:42,331 INFO L226 Difference]: Without dead ends: 3045 [2023-12-24 16:49:42,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:49:42,335 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 248 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:42,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1484 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:49:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2023-12-24 16:49:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 1617. [2023-12-24 16:49:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1383 states have (on average 1.2913955169920464) internal successors, (1786), 1389 states have internal predecessors, (1786), 218 states have call successors, (218), 15 states have call predecessors, (218), 15 states have return successors, (218), 212 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-24 16:49:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2222 transitions. [2023-12-24 16:49:42,494 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2222 transitions. Word has length 164 [2023-12-24 16:49:42,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:42,494 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2222 transitions. [2023-12-24 16:49:42,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2222 transitions. [2023-12-24 16:49:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:42,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:42,496 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:42,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:42,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:42,710 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:42,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:42,710 INFO L85 PathProgramCache]: Analyzing trace with hash -29610577, now seen corresponding path program 1 times [2023-12-24 16:49:42,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:42,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902453601] [2023-12-24 16:49:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:42,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:42,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:42,712 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:42,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 16:49:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:43,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:49:43,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:43,820 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-12-24 16:49:43,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-24 16:49:43,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:49:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:43,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:43,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902453601] [2023-12-24 16:49:43,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902453601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:43,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 16:49:43,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655152156] [2023-12-24 16:49:43,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:43,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:49:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:49:43,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:49:43,978 INFO L87 Difference]: Start difference. First operand 1617 states and 2222 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:45,437 INFO L93 Difference]: Finished difference Result 2819 states and 3878 transitions. [2023-12-24 16:49:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:49:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:45,444 INFO L225 Difference]: With dead ends: 2819 [2023-12-24 16:49:45,444 INFO L226 Difference]: Without dead ends: 1925 [2023-12-24 16:49:45,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:49:45,446 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 523 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:45,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1132 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:49:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2023-12-24 16:49:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1806. [2023-12-24 16:49:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1540 states have (on average 1.2876623376623377) internal successors, (1983), 1547 states have internal predecessors, (1983), 248 states have call successors, (248), 17 states have call predecessors, (248), 17 states have return successors, (248), 241 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-24 16:49:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2479 transitions. [2023-12-24 16:49:45,609 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2479 transitions. Word has length 164 [2023-12-24 16:49:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:45,610 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2479 transitions. [2023-12-24 16:49:45,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:45,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2479 transitions. [2023-12-24 16:49:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:45,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:45,611 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:45,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:45,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:45,824 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:45,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -850412045, now seen corresponding path program 1 times [2023-12-24 16:49:45,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:45,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163940459] [2023-12-24 16:49:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:45,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:45,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:45,828 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:45,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 16:49:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:46,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:49:46,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:46,356 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 [2023-12-24 16:49:46,360 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 [2023-12-24 16:49:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:46,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:46,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:46,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163940459] [2023-12-24 16:49:46,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163940459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:46,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:46,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:46,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768716253] [2023-12-24 16:49:46,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:46,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:49:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:46,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:49:46,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:49:46,378 INFO L87 Difference]: Start difference. First operand 1806 states and 2479 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:46,930 INFO L93 Difference]: Finished difference Result 3532 states and 4859 transitions. [2023-12-24 16:49:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:49:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:46,940 INFO L225 Difference]: With dead ends: 3532 [2023-12-24 16:49:46,941 INFO L226 Difference]: Without dead ends: 2841 [2023-12-24 16:49:46,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:49:46,943 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 195 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:46,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1091 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:49:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2023-12-24 16:49:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1798. [2023-12-24 16:49:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1532 states have (on average 1.2826370757180157) internal successors, (1965), 1539 states have internal predecessors, (1965), 248 states have call successors, (248), 17 states have call predecessors, (248), 17 states have return successors, (248), 241 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-24 16:49:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2461 transitions. [2023-12-24 16:49:47,129 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2461 transitions. Word has length 164 [2023-12-24 16:49:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:47,130 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2461 transitions. [2023-12-24 16:49:47,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2461 transitions. [2023-12-24 16:49:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:49:47,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:47,131 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:47,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:47,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:47,344 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:47,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:47,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2037216559, now seen corresponding path program 1 times [2023-12-24 16:49:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:47,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944012618] [2023-12-24 16:49:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:47,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:47,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:47,346 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:47,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 16:49:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:47,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:49:47,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:47,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:49:47,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:49:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:47,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:47,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:47,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944012618] [2023-12-24 16:49:47,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944012618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:47,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:47,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:49:47,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080427] [2023-12-24 16:49:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:47,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:49:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:49:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:49:47,846 INFO L87 Difference]: Start difference. First operand 1798 states and 2461 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:48,430 INFO L93 Difference]: Finished difference Result 3424 states and 4703 transitions. [2023-12-24 16:49:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:49:48,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 16:49:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:48,438 INFO L225 Difference]: With dead ends: 3424 [2023-12-24 16:49:48,438 INFO L226 Difference]: Without dead ends: 2960 [2023-12-24 16:49:48,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:49:48,440 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 190 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:48,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 866 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:49:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2023-12-24 16:49:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1779. [2023-12-24 16:49:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1513 states have (on average 1.2782551222736285) internal successors, (1934), 1520 states have internal predecessors, (1934), 248 states have call successors, (248), 17 states have call predecessors, (248), 17 states have return successors, (248), 241 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-24 16:49:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2430 transitions. [2023-12-24 16:49:48,613 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2430 transitions. Word has length 164 [2023-12-24 16:49:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:48,613 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2430 transitions. [2023-12-24 16:49:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2430 transitions. [2023-12-24 16:49:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 16:49:48,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:48,615 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:48,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:48,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:48,817 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:48,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -953175593, now seen corresponding path program 1 times [2023-12-24 16:49:48,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:48,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627025618] [2023-12-24 16:49:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:48,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:48,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:48,820 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:48,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 16:49:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:49,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:49:49,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:49,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:49:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:49,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:49,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:49,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627025618] [2023-12-24 16:49:49,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627025618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:49,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:49,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:49:49,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774620707] [2023-12-24 16:49:49,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:49,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:49:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:49:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:49:49,468 INFO L87 Difference]: Start difference. First operand 1779 states and 2430 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:49,659 INFO L93 Difference]: Finished difference Result 3384 states and 4614 transitions. [2023-12-24 16:49:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 16:49:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 165 [2023-12-24 16:49:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:49,663 INFO L225 Difference]: With dead ends: 3384 [2023-12-24 16:49:49,663 INFO L226 Difference]: Without dead ends: 1684 [2023-12-24 16:49:49,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:49:49,666 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:49,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 147 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:49:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-24 16:49:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-24 16:49:49,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1418 states have (on average 1.2454160789844853) internal successors, (1766), 1425 states have internal predecessors, (1766), 248 states have call successors, (248), 17 states have call predecessors, (248), 17 states have return successors, (248), 241 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-24 16:49:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2262 transitions. [2023-12-24 16:49:49,881 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2262 transitions. Word has length 165 [2023-12-24 16:49:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:49,881 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2262 transitions. [2023-12-24 16:49:49,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2262 transitions. [2023-12-24 16:49:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 16:49:49,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:49,883 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:49,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:50,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:50,096 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:50,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash 887422282, now seen corresponding path program 1 times [2023-12-24 16:49:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:50,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98951187] [2023-12-24 16:49:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:50,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:50,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:50,098 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:50,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 16:49:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:50,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:49:50,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:50,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:50,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98951187] [2023-12-24 16:49:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98951187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:50,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:50,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:49:50,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79005886] [2023-12-24 16:49:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:50,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:49:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:49:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:49:50,558 INFO L87 Difference]: Start difference. First operand 1684 states and 2262 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:50,749 INFO L93 Difference]: Finished difference Result 3287 states and 4426 transitions. [2023-12-24 16:49:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:49:50,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 165 [2023-12-24 16:49:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:50,753 INFO L225 Difference]: With dead ends: 3287 [2023-12-24 16:49:50,753 INFO L226 Difference]: Without dead ends: 1774 [2023-12-24 16:49:50,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:49:50,756 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 21 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:50,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 570 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:49:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2023-12-24 16:49:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1729. [2023-12-24 16:49:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1463 states have (on average 1.2378673957621327) internal successors, (1811), 1470 states have internal predecessors, (1811), 248 states have call successors, (248), 17 states have call predecessors, (248), 17 states have return successors, (248), 241 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-24 16:49:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2307 transitions. [2023-12-24 16:49:50,923 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2307 transitions. Word has length 165 [2023-12-24 16:49:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:50,923 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2307 transitions. [2023-12-24 16:49:50,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2307 transitions. [2023-12-24 16:49:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 16:49:50,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:50,925 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:50,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:51,138 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -128341021, now seen corresponding path program 1 times [2023-12-24 16:49:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386427838] [2023-12-24 16:49:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:51,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:51,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:51,141 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:51,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 16:49:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:52,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:49:52,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:52,783 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 26 treesize of output 22 [2023-12-24 16:49:52,896 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 81 treesize of output 69 [2023-12-24 16:49:52,903 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 69 treesize of output 57 [2023-12-24 16:49:52,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-12-24 16:49:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 16:49:52,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:49:53,147 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 27 [2023-12-24 16:49:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:53,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386427838] [2023-12-24 16:49:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386427838] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:49:53,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:49:53,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2023-12-24 16:49:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524872637] [2023-12-24 16:49:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:53,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:49:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:49:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:49:53,187 INFO L87 Difference]: Start difference. First operand 1729 states and 2307 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:55,525 INFO L93 Difference]: Finished difference Result 4205 states and 5561 transitions. [2023-12-24 16:49:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:49:55,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2023-12-24 16:49:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:55,530 INFO L225 Difference]: With dead ends: 4205 [2023-12-24 16:49:55,530 INFO L226 Difference]: Without dead ends: 2647 [2023-12-24 16:49:55,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:49:55,533 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 204 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:55,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1143 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 16:49:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2023-12-24 16:49:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2381. [2023-12-24 16:49:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2067 states have (on average 1.2341557813255926) internal successors, (2551), 2082 states have internal predecessors, (2551), 288 states have call successors, (288), 25 states have call predecessors, (288), 25 states have return successors, (288), 273 states have call predecessors, (288), 288 states have call successors, (288) [2023-12-24 16:49:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3127 transitions. [2023-12-24 16:49:55,765 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3127 transitions. Word has length 166 [2023-12-24 16:49:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:55,766 INFO L495 AbstractCegarLoop]: Abstraction has 2381 states and 3127 transitions. [2023-12-24 16:49:55,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:49:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3127 transitions. [2023-12-24 16:49:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 16:49:55,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:55,768 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:49:55,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:55,985 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:55,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash 573258853, now seen corresponding path program 1 times [2023-12-24 16:49:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:55,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529839221] [2023-12-24 16:49:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:55,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:49:55,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:55,987 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:49:55,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 16:49:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:56,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:49:56,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:56,959 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 [2023-12-24 16:49:56,965 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 20 treesize of output 16 [2023-12-24 16:49:56,999 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 [2023-12-24 16:49:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:49:57,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:49:57,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:57,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529839221] [2023-12-24 16:49:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529839221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:49:57,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:49:57,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:49:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508704342] [2023-12-24 16:49:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:57,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:49:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:49:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:49:57,020 INFO L87 Difference]: Start difference. First operand 2381 states and 3127 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:50:01,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:50:01,634 INFO L93 Difference]: Finished difference Result 6663 states and 8845 transitions. [2023-12-24 16:50:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:50:01,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2023-12-24 16:50:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:50:01,644 INFO L225 Difference]: With dead ends: 6663 [2023-12-24 16:50:01,644 INFO L226 Difference]: Without dead ends: 5253 [2023-12-24 16:50:01,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:50:01,648 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 416 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:50:01,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1169 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 16:50:01,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5253 states. [2023-12-24 16:50:02,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5253 to 4013. [2023-12-24 16:50:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4013 states, 3443 states have (on average 1.2343886145803078) internal successors, (4250), 3462 states have internal predecessors, (4250), 529 states have call successors, (529), 40 states have call predecessors, (529), 40 states have return successors, (529), 510 states have call predecessors, (529), 529 states have call successors, (529) [2023-12-24 16:50:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 5308 transitions. [2023-12-24 16:50:02,101 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 5308 transitions. Word has length 166 [2023-12-24 16:50:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:50:02,101 INFO L495 AbstractCegarLoop]: Abstraction has 4013 states and 5308 transitions. [2023-12-24 16:50:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:50:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 5308 transitions. [2023-12-24 16:50:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 16:50:02,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:50:02,104 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:50:02,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 16:50:02,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:50:02,324 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:50:02,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:50:02,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1420885853, now seen corresponding path program 1 times [2023-12-24 16:50:02,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:50:02,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124935254] [2023-12-24 16:50:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:02,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:50:02,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:50:02,327 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:50:02,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process Received shutdown request... [2023-12-24 17:02:23,430 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 [2023-12-24 17:02:23,430 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 17:02:24,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-24 17:02:24,640 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forcibly destroying the process [2023-12-24 17:02:24,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-24 17:02:24,681 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 17:02:24,681 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forcibly destroying the process [2023-12-24 17:02:24,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:02:24,682 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 167 with TraceHistMax 19,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [124935254] and IpTcStrategyModuleCvc4 [945403543]. [2023-12-24 17:02:24,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 137 [2023-12-24 17:02:24,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:02:24,687 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 17:02:24,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 05:02:24 BoogieIcfgContainer [2023-12-24 17:02:24,689 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 17:02:24,689 INFO L158 Benchmark]: Toolchain (without parser) took 862531.24ms. Allocated memory was 186.6MB in the beginning and 487.6MB in the end (delta: 300.9MB). Free memory was 136.4MB in the beginning and 350.8MB in the end (delta: -214.4MB). Peak memory consumption was 86.9MB. Max. memory is 8.0GB. [2023-12-24 17:02:24,690 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 186.6MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:02:24,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.31ms. Allocated memory is still 186.6MB. Free memory was 136.1MB in the beginning and 120.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 17:02:24,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.97ms. Allocated memory is still 186.6MB. Free memory was 120.4MB in the beginning and 116.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 17:02:24,690 INFO L158 Benchmark]: Boogie Preprocessor took 147.54ms. Allocated memory is still 186.6MB. Free memory was 116.9MB in the beginning and 108.1MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-24 17:02:24,690 INFO L158 Benchmark]: RCFGBuilder took 4262.26ms. Allocated memory is still 186.6MB. Free memory was 108.1MB in the beginning and 101.4MB in the end (delta: 6.8MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. [2023-12-24 17:02:24,691 INFO L158 Benchmark]: TraceAbstraction took 857684.69ms. Allocated memory was 186.6MB in the beginning and 487.6MB in the end (delta: 300.9MB). Free memory was 100.8MB in the beginning and 350.8MB in the end (delta: -250.0MB). Peak memory consumption was 50.5MB. Max. memory is 8.0GB. [2023-12-24 17:02:24,691 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 186.6MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 352.31ms. Allocated memory is still 186.6MB. Free memory was 136.1MB in the beginning and 120.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.97ms. Allocated memory is still 186.6MB. Free memory was 120.4MB in the beginning and 116.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 147.54ms. Allocated memory is still 186.6MB. Free memory was 116.9MB in the beginning and 108.1MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 4262.26ms. Allocated memory is still 186.6MB. Free memory was 108.1MB in the beginning and 101.4MB in the end (delta: 6.8MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. * TraceAbstraction took 857684.69ms. Allocated memory was 186.6MB in the beginning and 487.6MB in the end (delta: 300.9MB). Free memory was 100.8MB in the beginning and 350.8MB in the end (delta: -250.0MB). Peak memory consumption was 50.5MB. 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 167 with TraceHistMax 19,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [124935254] and IpTcStrategyModuleCvc4 [945403543]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 857.6s, OverallIterations: 35, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 56.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7241 SdHoareTripleChecker+Valid, 44.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7229 mSDsluCounter, 29687 SdHoareTripleChecker+Invalid, 41.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23124 mSDsCounter, 820 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6411 IncrementalHoareTripleChecker+Invalid, 7231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 820 mSolverCounterUnsat, 6563 mSDtfsCounter, 6411 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6235 GetRequests, 5891 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4013occurred in iteration=34, InterpolantAutomatonStates: 273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 34 MinimizatonAttempts, 7962 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 8.7s SatisfiabilityAnalysisTime, 32.9s InterpolantComputationTime, 5477 NumberOfCodeBlocks, 5477 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 6086 ConstructedInterpolants, 1724 QuantifiedInterpolants, 52515 SizeOfPredicates, 353 NumberOfNonLiveVariables, 14640 ConjunctsInSsa, 340 ConjunctsInUnsatCore, 38 InterpolantComputations, 33 PerfectInterpolantSequences, 25040/25992 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