/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-61.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:50:46,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:50:46,815 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 16:50:46,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:50:46,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:50:46,843 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:50:46,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:50:46,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:50:46,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:50:46,848 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:50:46,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:50:46,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:50:46,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:50:46,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:50:46,850 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:50:46,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:50:46,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:50:46,851 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:50:46,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:50:46,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:50:46,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:50:46,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:50:46,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:50:46,852 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:50:46,853 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:50:46,853 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:50:46,853 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:50:46,853 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:50:46,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:50:46,853 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:50:46,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:50:46,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:50:46,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:50:46,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:50:46,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:50:46,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:50:46,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:50:46,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:50:46,855 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:50:46,855 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:50:46,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:50:46,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:50:46,856 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:50:46,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:50:46,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:50:46,856 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:50:46,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:50:47,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:50:47,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:50:47,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:50:47,060 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:50:47,064 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:50:47,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-61.i [2023-12-24 16:50:48,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:50:48,271 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:50:48,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-61.i [2023-12-24 16:50:48,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9da6ecb/249b0884fe5645b7bd8a74800884cdaa/FLAG5f50e3ebe [2023-12-24 16:50:48,293 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9da6ecb/249b0884fe5645b7bd8a74800884cdaa [2023-12-24 16:50:48,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:50:48,296 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:50:48,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:50:48,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:50:48,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:50:48,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b57ac59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48, skipping insertion in model container [2023-12-24 16:50:48,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:50:48,440 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-61.i[916,929] [2023-12-24 16:50:48,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:50:48,505 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:50:48,513 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-61.i[916,929] [2023-12-24 16:50:48,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:50:48,557 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:50:48,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48 WrapperNode [2023-12-24 16:50:48,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:50:48,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:50:48,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:50:48,558 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:50:48,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,601 INFO L138 Inliner]: procedures = 36, calls = 203, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 560 [2023-12-24 16:50:48,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:50:48,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:50:48,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:50:48,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:50:48,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,674 INFO L175 MemorySlicer]: Split 147 memory accesses to 21 slices as follows [2, 7, 8, 10, 10, 3, 6, 8, 5, 8, 8, 6, 8, 6, 6, 8, 3, 19, 8, 3, 5]. 13 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 23 writes are split as follows [0, 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. [2023-12-24 16:50:48,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:50:48,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:50:48,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:50:48,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:50:48,719 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (1/1) ... [2023-12-24 16:50:48,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:50:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:50:48,742 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 16:50:48,759 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 16:50:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:50:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 16:50:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 16:50:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 16:50:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 16:50:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 16:50:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 16:50:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 16:50:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#10 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#11 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#12 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#13 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#14 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#15 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#16 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#17 [2023-12-24 16:50:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#18 [2023-12-24 16:50:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#19 [2023-12-24 16:50:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#20 [2023-12-24 16:50:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 16:50:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 16:50:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 16:50:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 16:50:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 16:50:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 16:50:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 16:50:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 16:50:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2023-12-24 16:50:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#10 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#11 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#12 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#13 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#14 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#15 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#16 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#17 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#18 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#19 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#20 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:50:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#15 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#16 [2023-12-24 16:50:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#17 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#18 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#19 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#20 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:50:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:50:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:50:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#15 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#16 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#17 [2023-12-24 16:50:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#18 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#19 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#20 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:50:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#15 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#16 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#17 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#18 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#19 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#20 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 16:50:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 16:50:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 16:50:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 16:50:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 16:50:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#13 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#14 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#15 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#16 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#17 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#18 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#19 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#20 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 16:50:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2023-12-24 16:50:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#10 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#11 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#12 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#13 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#14 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#15 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#16 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#17 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#18 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#19 [2023-12-24 16:50:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#20 [2023-12-24 16:50:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:50:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:50:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:50:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:50:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:50:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#15 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#16 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#17 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#18 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#19 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#20 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 16:50:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#13 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#14 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#15 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#16 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#17 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#18 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#19 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#20 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 16:50:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#13 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#14 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#15 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#16 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#17 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#18 [2023-12-24 16:50:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#19 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#20 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:50:48,791 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:50:48,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 16:50:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#15 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#16 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#17 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#18 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#19 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#20 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-24 16:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-24 16:50:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#15 [2023-12-24 16:50:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#16 [2023-12-24 16:50:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#17 [2023-12-24 16:50:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#18 [2023-12-24 16:50:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#19 [2023-12-24 16:50:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#20 [2023-12-24 16:50:49,077 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:50:49,079 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:50:49,787 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:50:49,822 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:50:49,822 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:50:49,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:50:49 BoogieIcfgContainer [2023-12-24 16:50:49,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:50:49,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:50:49,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:50:49,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:50:49,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:50:48" (1/3) ... [2023-12-24 16:50:49,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77669662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:50:49, skipping insertion in model container [2023-12-24 16:50:49,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:50:48" (2/3) ... [2023-12-24 16:50:49,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77669662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:50:49, skipping insertion in model container [2023-12-24 16:50:49,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:50:49" (3/3) ... [2023-12-24 16:50:49,828 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-61.i [2023-12-24 16:50:49,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:50:49,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:50:49,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:50:49,880 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;@6a96a263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:50:49,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:50:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 85 states have (on average 1.388235294117647) internal successors, (118), 86 states have internal predecessors, (118), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:50:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-24 16:50:49,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:50:49,904 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:49,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:50:49,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:50:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1188613599, now seen corresponding path program 1 times [2023-12-24 16:50:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:50:49,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819409552] [2023-12-24 16:50:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:49,922 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 16:50:49,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:50:49,937 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 16:50:49,952 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 16:50:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:50,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:50:50,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:50:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-12-24 16:50:50,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:50:50,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:50:50,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819409552] [2023-12-24 16:50:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819409552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:50:50,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:50:50,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:50:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524678787] [2023-12-24 16:50:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:50:50,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:50:50,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:50:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:50:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:50:50,418 INFO L87 Difference]: Start difference. First operand has 113 states, 85 states have (on average 1.388235294117647) internal successors, (118), 86 states have internal predecessors, (118), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 16:50:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:50:50,483 INFO L93 Difference]: Finished difference Result 223 states and 359 transitions. [2023-12-24 16:50:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:50:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 185 [2023-12-24 16:50:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:50:50,490 INFO L225 Difference]: With dead ends: 223 [2023-12-24 16:50:50,490 INFO L226 Difference]: Without dead ends: 111 [2023-12-24 16:50:50,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 184 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 16:50:50,494 INFO L413 NwaCegarLoop]: 159 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, 159 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 16:50:50,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:50:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-24 16:50:50,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-12-24 16:50:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 84 states have internal predecessors, (113), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:50:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2023-12-24 16:50:50,547 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 163 transitions. Word has length 185 [2023-12-24 16:50:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:50:50,547 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 163 transitions. [2023-12-24 16:50:50,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 16:50:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 163 transitions. [2023-12-24 16:50:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-24 16:50:50,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:50:50,551 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:50,559 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 (2)] Ended with exit code 0 [2023-12-24 16:50:50,759 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 16:50:50,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:50:50,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:50:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash -724607923, now seen corresponding path program 1 times [2023-12-24 16:50:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:50:50,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574710416] [2023-12-24 16:50:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:50,765 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 16:50:50,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:50:50,784 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 16:50:50,812 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 16:50:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:51,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:50:51,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:50:51,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:50:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 31 proven. 457 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2023-12-24 16:50:51,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:50:52,280 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:50:52,280 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 30 treesize of output 25 [2023-12-24 16:50:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 27 proven. 114 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2023-12-24 16:50:52,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:50:52,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574710416] [2023-12-24 16:50:52,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574710416] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:50:52,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:50:52,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-24 16:50:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899564231] [2023-12-24 16:50:52,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:50:52,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 16:50:52,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:50:52,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 16:50:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:50:52,319 INFO L87 Difference]: Start difference. First operand 111 states and 163 transitions. Second operand has 21 states, 17 states have (on average 6.294117647058823) internal successors, (107), 19 states have internal predecessors, (107), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-24 16:50:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:50:53,136 INFO L93 Difference]: Finished difference Result 242 states and 348 transitions. [2023-12-24 16:50:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 16:50:53,137 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 6.294117647058823) internal successors, (107), 19 states have internal predecessors, (107), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) Word has length 185 [2023-12-24 16:50:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:50:53,139 INFO L225 Difference]: With dead ends: 242 [2023-12-24 16:50:53,139 INFO L226 Difference]: Without dead ends: 132 [2023-12-24 16:50:53,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:50:53,141 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 388 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:50:53,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 881 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:50:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-24 16:50:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2023-12-24 16:50:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.297872340425532) internal successors, (122), 95 states have internal predecessors, (122), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-24 16:50:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 180 transitions. [2023-12-24 16:50:53,157 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 180 transitions. Word has length 185 [2023-12-24 16:50:53,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:50:53,158 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 180 transitions. [2023-12-24 16:50:53,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 6.294117647058823) internal successors, (107), 19 states have internal predecessors, (107), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-24 16:50:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 180 transitions. [2023-12-24 16:50:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:50:53,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:50:53,160 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:53,170 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 16:50:53,373 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 16:50:53,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:50:53,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:50:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash 458029970, now seen corresponding path program 1 times [2023-12-24 16:50:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:50:53,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244544507] [2023-12-24 16:50:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:53,374 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 16:50:53,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:50:53,376 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 16:50:53,406 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 16:50:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:53,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:50:53,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:50:54,036 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 16:50:54,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2023-12-24 16:50:54,087 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 42 treesize of output 30 [2023-12-24 16:50:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 21 proven. 327 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-12-24 16:50:54,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:50:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:50:54,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:50:54,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244544507] [2023-12-24 16:50:54,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244544507] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:50:54,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:50:54,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2023-12-24 16:50:54,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368608836] [2023-12-24 16:50:54,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:50:54,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:50:54,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:50:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:50:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:50:54,233 INFO L87 Difference]: Start difference. First operand 127 states and 180 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:50:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:50:54,394 INFO L93 Difference]: Finished difference Result 322 states and 455 transitions. [2023-12-24 16:50:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:50:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:50:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:50:54,398 INFO L225 Difference]: With dead ends: 322 [2023-12-24 16:50:54,398 INFO L226 Difference]: Without dead ends: 204 [2023-12-24 16:50:54,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:50:54,399 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 154 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:50:54,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 789 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:50:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-24 16:50:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 178. [2023-12-24 16:50:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.3333333333333333) internal successors, (188), 143 states have internal predecessors, (188), 31 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:50:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 250 transitions. [2023-12-24 16:50:54,413 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 250 transitions. Word has length 187 [2023-12-24 16:50:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:50:54,414 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 250 transitions. [2023-12-24 16:50:54,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:50:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 250 transitions. [2023-12-24 16:50:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:50:54,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:50:54,416 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:54,448 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 16:50:54,624 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 16:50:54,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:50:54,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:50:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1130317932, now seen corresponding path program 1 times [2023-12-24 16:50:54,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:50:54,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126517073] [2023-12-24 16:50:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:54,627 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 16:50:54,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:50:54,628 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 16:50:54,630 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 16:50:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:54,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 16:50:54,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:50:56,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:50:56,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:50:56,324 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 50 treesize of output 38 [2023-12-24 16:50:56,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 16:50:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 23 proven. 481 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2023-12-24 16:50:56,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:50:56,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:50:56,976 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 39 treesize of output 38 [2023-12-24 16:50:57,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:50:57,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126517073] [2023-12-24 16:50:57,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126517073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:50:57,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1509223394] [2023-12-24 16:50:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:57,184 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:50:57,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:50:57,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:50:57,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 16:50:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:57,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:50:57,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:50:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:50:57,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:50:57,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1509223394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:50:57,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:50:57,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [23] total 24 [2023-12-24 16:50:57,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10082232] [2023-12-24 16:50:57,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:50:57,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:50:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:50:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:50:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:50:57,742 INFO L87 Difference]: Start difference. First operand 178 states and 250 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:50:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:50:57,911 INFO L93 Difference]: Finished difference Result 407 states and 576 transitions. [2023-12-24 16:50:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:50:57,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:50:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:50:57,913 INFO L225 Difference]: With dead ends: 407 [2023-12-24 16:50:57,914 INFO L226 Difference]: Without dead ends: 242 [2023-12-24 16:50:57,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 16:50:57,915 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 83 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:50:57,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 751 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:50:57,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-24 16:50:57,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 190. [2023-12-24 16:50:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 153 states have (on average 1.3071895424836601) internal successors, (200), 155 states have internal predecessors, (200), 31 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:50:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 262 transitions. [2023-12-24 16:50:57,927 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 262 transitions. Word has length 187 [2023-12-24 16:50:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:50:57,927 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 262 transitions. [2023-12-24 16:50:57,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:50:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 262 transitions. [2023-12-24 16:50:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:50:57,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:50:57,929 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:57,939 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 16:50:58,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-24 16:50:58,336 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:50:58,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:50:58,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:50:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1939664558, now seen corresponding path program 1 times [2023-12-24 16:50:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:50:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642992997] [2023-12-24 16:50:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:58,338 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 16:50:58,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:50:58,357 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 16:50:58,358 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 16:50:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:58,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:50:58,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:00,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:51:00,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:51:00,121 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 50 treesize of output 38 [2023-12-24 16:51:00,126 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 55 treesize of output 39 [2023-12-24 16:51:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 23 proven. 481 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2023-12-24 16:51:00,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:00,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:51:00,848 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 39 treesize of output 38 [2023-12-24 16:51:01,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642992997] [2023-12-24 16:51:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642992997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373738160] [2023-12-24 16:51:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:01,024 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:01,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:51:01,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:51:01,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 16:51:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:01,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:51:01,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:51:01,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:51:01,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373738160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:51:01,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:01,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [25] total 26 [2023-12-24 16:51:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139171900] [2023-12-24 16:51:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:01,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:51:01,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:51:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 16:51:01,517 INFO L87 Difference]: Start difference. First operand 190 states and 262 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:01,917 INFO L93 Difference]: Finished difference Result 427 states and 586 transitions. [2023-12-24 16:51:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 16:51:01,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:51:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:01,922 INFO L225 Difference]: With dead ends: 427 [2023-12-24 16:51:01,922 INFO L226 Difference]: Without dead ends: 250 [2023-12-24 16:51:01,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=316, Invalid=2336, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 16:51:01,924 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 72 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:01,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1026 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:51:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-24 16:51:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 198. [2023-12-24 16:51:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 161 states have (on average 1.2919254658385093) internal successors, (208), 163 states have internal predecessors, (208), 31 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:51:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 270 transitions. [2023-12-24 16:51:01,952 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 270 transitions. Word has length 187 [2023-12-24 16:51:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:01,952 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 270 transitions. [2023-12-24 16:51:01,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 270 transitions. [2023-12-24 16:51:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:51:01,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:01,954 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:01,961 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 16:51:02,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-24 16:51:02,366 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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:02,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:02,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:02,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1939604976, now seen corresponding path program 1 times [2023-12-24 16:51:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:02,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758482420] [2023-12-24 16:51:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:02,368 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 16:51:02,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:02,369 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 16:51:02,370 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 16:51:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:02,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:51:02,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:03,691 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 88 treesize of output 52 [2023-12-24 16:51:03,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:51:03,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:51:03,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:51:03,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:51:03,800 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 64 treesize of output 24 [2023-12-24 16:51:03,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:51:03,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:51:03,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:12,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:12,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758482420] [2023-12-24 16:51:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758482420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:12,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1193761540] [2023-12-24 16:51:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:12,169 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:12,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:51:12,170 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:51:12,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 16:51:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:12,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:51:12,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:13,162 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 43 treesize of output 19 [2023-12-24 16:51:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:51:13,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:51:13,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1193761540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:51:13,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:13,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-12-24 16:51:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470659879] [2023-12-24 16:51:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:13,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:51:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:51:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:13,493 INFO L87 Difference]: Start difference. First operand 198 states and 270 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:13,733 INFO L93 Difference]: Finished difference Result 381 states and 521 transitions. [2023-12-24 16:51:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:51:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:51:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:13,736 INFO L225 Difference]: With dead ends: 381 [2023-12-24 16:51:13,736 INFO L226 Difference]: Without dead ends: 196 [2023-12-24 16:51:13,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:13,739 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:13,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 441 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:51:13,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-24 16:51:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-24 16:51:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 159 states have (on average 1.270440251572327) internal successors, (202), 161 states have internal predecessors, (202), 31 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:51:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 264 transitions. [2023-12-24 16:51:13,757 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 264 transitions. Word has length 187 [2023-12-24 16:51:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:13,757 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 264 transitions. [2023-12-24 16:51:13,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 264 transitions. [2023-12-24 16:51:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:51:13,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:13,759 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:13,769 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 16:51:13,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:51:14,168 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=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:14,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:14,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1516903150, now seen corresponding path program 1 times [2023-12-24 16:51:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059459957] [2023-12-24 16:51:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:14,169 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 16:51:14,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:14,170 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 16:51:14,174 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 16:51:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:14,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:51:14,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:15,548 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 88 treesize of output 52 [2023-12-24 16:51:15,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:51:15,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:51:15,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:51:15,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:51:15,663 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 64 treesize of output 24 [2023-12-24 16:51:15,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:51:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:51:15,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:24,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059459957] [2023-12-24 16:51:24,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059459957] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [781186414] [2023-12-24 16:51:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:24,882 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:24,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:51:24,883 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:51:24,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 16:51:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:25,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:51:25,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:26,307 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 82 treesize of output 34 [2023-12-24 16:51:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:51:26,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:51:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [781186414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:51:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:51:26,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309002276] [2023-12-24 16:51:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:51:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:51:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:51:26,602 INFO L87 Difference]: Start difference. First operand 196 states and 264 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:27,182 INFO L93 Difference]: Finished difference Result 483 states and 653 transitions. [2023-12-24 16:51:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:51:27,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:51:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:27,189 INFO L225 Difference]: With dead ends: 483 [2023-12-24 16:51:27,189 INFO L226 Difference]: Without dead ends: 300 [2023-12-24 16:51:27,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:51:27,191 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 211 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:27,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 532 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:51:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-24 16:51:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 258. [2023-12-24 16:51:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 195 states have (on average 1.2307692307692308) internal successors, (240), 197 states have internal predecessors, (240), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:51:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 348 transitions. [2023-12-24 16:51:27,208 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 348 transitions. Word has length 187 [2023-12-24 16:51:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:27,208 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 348 transitions. [2023-12-24 16:51:27,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 348 transitions. [2023-12-24 16:51:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:51:27,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:27,210 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:27,232 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 16:51:27,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:51:27,617 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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:27,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:27,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:27,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1460116249, now seen corresponding path program 1 times [2023-12-24 16:51:27,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:27,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417792066] [2023-12-24 16:51:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:27,618 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 16:51:27,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:27,619 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 16:51:27,621 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 16:51:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:27,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:51:27,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:28,251 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 33 treesize of output 21 [2023-12-24 16:51:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 23 proven. 165 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-24 16:51:28,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:28,490 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:51:28,490 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 20 treesize of output 19 [2023-12-24 16:51:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 3 proven. 69 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-24 16:51:28,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:28,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417792066] [2023-12-24 16:51:28,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417792066] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:51:28,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:51:28,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:51:28,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816434485] [2023-12-24 16:51:28,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:51:28,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:51:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:28,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:51:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:51:28,505 INFO L87 Difference]: Start difference. First operand 258 states and 348 transitions. Second operand has 11 states, 9 states have (on average 8.666666666666666) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 2 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:51:28,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:28,895 INFO L93 Difference]: Finished difference Result 519 states and 695 transitions. [2023-12-24 16:51:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:51:28,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.666666666666666) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 2 states have call predecessors, (50), 4 states have call successors, (50) Word has length 187 [2023-12-24 16:51:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:28,897 INFO L225 Difference]: With dead ends: 519 [2023-12-24 16:51:28,897 INFO L226 Difference]: Without dead ends: 274 [2023-12-24 16:51:28,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 363 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:51:28,898 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 342 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:28,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 524 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:51:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-24 16:51:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 262. [2023-12-24 16:51:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 198 states have (on average 1.2171717171717171) internal successors, (241), 200 states have internal predecessors, (241), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:51:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 349 transitions. [2023-12-24 16:51:28,919 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 349 transitions. Word has length 187 [2023-12-24 16:51:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:28,919 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 349 transitions. [2023-12-24 16:51:28,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.666666666666666) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 2 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:51:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 349 transitions. [2023-12-24 16:51:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:51:28,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:28,920 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:28,931 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 16:51:29,127 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 16:51:29,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:29,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash -128231653, now seen corresponding path program 1 times [2023-12-24 16:51:29,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:29,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598335228] [2023-12-24 16:51:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:29,129 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 16:51:29,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:29,135 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 16:51:29,137 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 16:51:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:29,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:51:29,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:29,803 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 16:51:29,838 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 16:51:29,857 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 43 treesize of output 27 [2023-12-24 16:51:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 21 proven. 327 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-12-24 16:51:29,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:30,405 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:51:30,405 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 30 treesize of output 25 [2023-12-24 16:51:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-24 16:51:30,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598335228] [2023-12-24 16:51:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598335228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:51:30,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:51:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-24 16:51:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821905600] [2023-12-24 16:51:30,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:51:30,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 16:51:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 16:51:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:51:30,437 INFO L87 Difference]: Start difference. First operand 262 states and 349 transitions. Second operand has 20 states, 18 states have (on average 6.722222222222222) internal successors, (121), 20 states have internal predecessors, (121), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 3 states have call predecessors, (50), 5 states have call successors, (50) [2023-12-24 16:51:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:31,446 INFO L93 Difference]: Finished difference Result 570 states and 749 transitions. [2023-12-24 16:51:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 16:51:31,447 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.722222222222222) internal successors, (121), 20 states have internal predecessors, (121), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 3 states have call predecessors, (50), 5 states have call successors, (50) Word has length 187 [2023-12-24 16:51:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:31,449 INFO L225 Difference]: With dead ends: 570 [2023-12-24 16:51:31,449 INFO L226 Difference]: Without dead ends: 321 [2023-12-24 16:51:31,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=307, Invalid=1175, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:51:31,450 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 652 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:31,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1369 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:51:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-24 16:51:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 146. [2023-12-24 16:51:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 115 states have (on average 1.2260869565217392) internal successors, (141), 115 states have internal predecessors, (141), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:51:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 191 transitions. [2023-12-24 16:51:31,460 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 191 transitions. Word has length 187 [2023-12-24 16:51:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:31,461 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 191 transitions. [2023-12-24 16:51:31,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.722222222222222) internal successors, (121), 20 states have internal predecessors, (121), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 3 states have call predecessors, (50), 5 states have call successors, (50) [2023-12-24 16:51:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 191 transitions. [2023-12-24 16:51:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:51:31,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:31,462 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:31,469 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 16:51:31,669 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 16:51:31,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:31,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1733993582, now seen corresponding path program 1 times [2023-12-24 16:51:31,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:31,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115100896] [2023-12-24 16:51:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:31,670 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 16:51:31,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:31,672 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 16:51:31,672 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 16:51:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:32,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:51:32,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:33,039 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 88 treesize of output 52 [2023-12-24 16:51:33,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:51:33,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:51:33,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:51:33,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:51:33,143 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 64 treesize of output 24 [2023-12-24 16:51:33,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:51:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:51:33,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:41,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:41,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115100896] [2023-12-24 16:51:41,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115100896] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:41,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [619860898] [2023-12-24 16:51:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:41,757 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:41,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:51:41,764 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:51:41,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 16:51:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:42,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:51:42,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:43,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 35 [2023-12-24 16:51:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:51:43,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:51:43,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [619860898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:51:43,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:43,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:51:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492888397] [2023-12-24 16:51:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:43,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:51:43,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:43,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:51:43,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:51:43,343 INFO L87 Difference]: Start difference. First operand 146 states and 191 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:43,873 INFO L93 Difference]: Finished difference Result 445 states and 586 transitions. [2023-12-24 16:51:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:51:43,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:51:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:43,875 INFO L225 Difference]: With dead ends: 445 [2023-12-24 16:51:43,875 INFO L226 Difference]: Without dead ends: 300 [2023-12-24 16:51:43,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:51:43,876 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 223 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:43,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 890 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:51:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-24 16:51:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 146. [2023-12-24 16:51:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 115 states have internal predecessors, (140), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:51:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2023-12-24 16:51:43,887 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 187 [2023-12-24 16:51:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:43,887 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2023-12-24 16:51:43,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2023-12-24 16:51:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:51:43,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:43,888 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:43,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:51:44,104 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 16:51:44,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:51:44,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:44,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash 972625812, now seen corresponding path program 1 times [2023-12-24 16:51:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:44,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130216999] [2023-12-24 16:51:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:44,305 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 16:51:44,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:44,306 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 16:51:44,341 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 16:51:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:44,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:51:44,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:45,257 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 16:51:45,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:51:45,318 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 16:51:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 31 proven. 457 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2023-12-24 16:51:45,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:51:45,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:45,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130216999] [2023-12-24 16:51:45,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130216999] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:45,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:45,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2023-12-24 16:51:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772418338] [2023-12-24 16:51:45,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:45,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:51:45,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:45,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:51:45,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:51:45,448 INFO L87 Difference]: Start difference. First operand 146 states and 190 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:45,608 INFO L93 Difference]: Finished difference Result 376 states and 491 transitions. [2023-12-24 16:51:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:51:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:51:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:45,609 INFO L225 Difference]: With dead ends: 376 [2023-12-24 16:51:45,609 INFO L226 Difference]: Without dead ends: 231 [2023-12-24 16:51:45,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:51:45,610 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 166 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:45,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 857 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:51:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-24 16:51:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 145. [2023-12-24 16:51:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 114 states have (on average 1.219298245614035) internal successors, (139), 114 states have internal predecessors, (139), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:51:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 189 transitions. [2023-12-24 16:51:45,619 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 189 transitions. Word has length 187 [2023-12-24 16:51:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:45,619 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 189 transitions. [2023-12-24 16:51:45,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 189 transitions. [2023-12-24 16:51:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 16:51:45,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:45,620 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:45,629 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 16:51:45,827 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 16:51:45,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:45,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1933669987, now seen corresponding path program 1 times [2023-12-24 16:51:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792577424] [2023-12-24 16:51:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:45,829 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 16:51:45,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:45,831 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 16:51:45,866 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 (18)] Waiting until timeout for monitored process [2023-12-24 16:51:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:46,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:51:46,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:47,161 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 88 treesize of output 52 [2023-12-24 16:51:47,172 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 21 treesize of output 10 [2023-12-24 16:51:47,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:51:47,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:51:47,264 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 56 treesize of output 20 [2023-12-24 16:51:47,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:51:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:51:47,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:56,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:56,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792577424] [2023-12-24 16:51:56,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792577424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:56,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1985966027] [2023-12-24 16:51:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:56,916 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:51:56,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:51:56,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-24 16:51:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:57,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:51:57,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:57,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2023-12-24 16:51:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:51:58,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:51:58,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1985966027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:51:58,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:58,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-12-24 16:51:58,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097283667] [2023-12-24 16:51:58,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:58,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:51:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:58,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:51:58,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:58,108 INFO L87 Difference]: Start difference. First operand 145 states and 189 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:58,192 INFO L93 Difference]: Finished difference Result 281 states and 368 transitions. [2023-12-24 16:51:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:51:58,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 187 [2023-12-24 16:51:58,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:58,193 INFO L225 Difference]: With dead ends: 281 [2023-12-24 16:51:58,193 INFO L226 Difference]: Without dead ends: 137 [2023-12-24 16:51:58,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:58,194 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 40 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:58,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 390 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:51:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-24 16:51:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-12-24 16:51:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 106 states have internal predecessors, (128), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:51:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 178 transitions. [2023-12-24 16:51:58,203 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 178 transitions. Word has length 187 [2023-12-24 16:51:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:58,203 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 178 transitions. [2023-12-24 16:51:58,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 178 transitions. [2023-12-24 16:51:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-24 16:51:58,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:58,209 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:58,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-12-24 16:51:58,426 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 16:51:58,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:51:58,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:58,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1758200407, now seen corresponding path program 1 times [2023-12-24 16:51:58,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:58,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195334262] [2023-12-24 16:51:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:58,625 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 16:51:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:58,626 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 16:51:58,631 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 16:51:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:59,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:51:59,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:59,158 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 28 treesize of output 24 [2023-12-24 16:51:59,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 75 [2023-12-24 16:51:59,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63 [2023-12-24 16:51:59,196 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 51 [2023-12-24 16:51:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2023-12-24 16:51:59,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:59,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:51:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:51:59,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195334262] [2023-12-24 16:51:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195334262] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:59,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-12-24 16:51:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358526255] [2023-12-24 16:51:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:51:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:51:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:51:59,308 INFO L87 Difference]: Start difference. First operand 137 states and 178 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:59,639 INFO L93 Difference]: Finished difference Result 371 states and 477 transitions. [2023-12-24 16:51:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:51:59,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 190 [2023-12-24 16:51:59,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:59,641 INFO L225 Difference]: With dead ends: 371 [2023-12-24 16:51:59,641 INFO L226 Difference]: Without dead ends: 235 [2023-12-24 16:51:59,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:51:59,642 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 192 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:59,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 837 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:51:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-24 16:51:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 151. [2023-12-24 16:51:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 120 states have (on average 1.2) internal successors, (144), 120 states have internal predecessors, (144), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:51:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2023-12-24 16:51:59,654 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 190 [2023-12-24 16:51:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:59,655 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2023-12-24 16:51:59,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:51:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2023-12-24 16:51:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-24 16:51:59,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:59,656 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:59,670 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 16:51:59,863 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 16:51:59,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:59,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -47237927, now seen corresponding path program 1 times [2023-12-24 16:51:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:59,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344419354] [2023-12-24 16:51:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:59,865 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 16:51:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:59,866 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 16:51:59,901 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 16:52:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:52:00,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:52:00,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:52:01,267 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 88 treesize of output 52 [2023-12-24 16:52:01,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:52:01,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:52:01,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:52:01,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:52:01,507 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 64 treesize of output 24 [2023-12-24 16:52:01,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:52:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:52:01,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:52:10,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:52:10,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344419354] [2023-12-24 16:52:10,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344419354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:52:10,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [561811887] [2023-12-24 16:52:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:52:10,827 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:52:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:52:10,828 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:52:10,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-24 16:52:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:52:11,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:52:11,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:52:11,887 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 43 treesize of output 19 [2023-12-24 16:52:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:52:12,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:52:12,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [561811887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:52:12,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:52:12,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-12-24 16:52:12,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668731647] [2023-12-24 16:52:12,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:52:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:52:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:52:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:52:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:52:12,244 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:52:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:52:12,339 INFO L93 Difference]: Finished difference Result 301 states and 387 transitions. [2023-12-24 16:52:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:52:12,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 190 [2023-12-24 16:52:12,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:52:12,341 INFO L225 Difference]: With dead ends: 301 [2023-12-24 16:52:12,341 INFO L226 Difference]: Without dead ends: 151 [2023-12-24 16:52:12,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:52:12,341 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 33 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:52:12,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 394 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:52:12,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-24 16:52:12,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-12-24 16:52:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 120 states have (on average 1.1833333333333333) internal successors, (142), 120 states have internal predecessors, (142), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:52:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 192 transitions. [2023-12-24 16:52:12,351 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 192 transitions. Word has length 190 [2023-12-24 16:52:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:52:12,351 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 192 transitions. [2023-12-24 16:52:12,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:52:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 192 transitions. [2023-12-24 16:52:12,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-24 16:52:12,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:52:12,352 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:12,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-24 16:52:12,573 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 16:52:12,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:52:12,762 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:52:12,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:52:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1068306281, now seen corresponding path program 1 times [2023-12-24 16:52:12,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:52:12,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321385840] [2023-12-24 16:52:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:52:12,763 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 16:52:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:52:12,764 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 16:52:12,765 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 16:52:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:52:13,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:52:13,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:52:14,226 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 88 treesize of output 52 [2023-12-24 16:52:14,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:52:14,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:52:14,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:52:14,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:52:14,527 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 64 treesize of output 24 [2023-12-24 16:52:14,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:52:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:52:14,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:52:24,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:52:24,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321385840] [2023-12-24 16:52:24,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321385840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:52:24,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1736980302] [2023-12-24 16:52:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:52:24,368 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:52:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:52:24,369 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:52:24,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-24 16:52:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:52:25,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:52:25,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:52:26,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:52:26,511 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 112 treesize of output 52 [2023-12-24 16:52:32,664 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 58 treesize of output 34 [2023-12-24 16:52:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:52:39,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:52:39,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1736980302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:52:39,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:52:39,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2023-12-24 16:52:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425651815] [2023-12-24 16:52:39,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:52:39,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:52:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:52:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:52:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=261, Unknown=2, NotChecked=0, Total=306 [2023-12-24 16:52:39,921 INFO L87 Difference]: Start difference. First operand 151 states and 192 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:52:53,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:53:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:09,164 INFO L93 Difference]: Finished difference Result 411 states and 527 transitions. [2023-12-24 16:53:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:53:09,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 190 [2023-12-24 16:53:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:09,176 INFO L225 Difference]: With dead ends: 411 [2023-12-24 16:53:09,176 INFO L226 Difference]: Without dead ends: 261 [2023-12-24 16:53:09,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=56, Invalid=322, Unknown=2, NotChecked=0, Total=380 [2023-12-24 16:53:09,177 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 196 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:09,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 971 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 278 Invalid, 1 Unknown, 0 Unchecked, 23.3s Time] [2023-12-24 16:53:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-24 16:53:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 146. [2023-12-24 16:53:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 115 states have (on average 1.173913043478261) internal successors, (135), 115 states have internal predecessors, (135), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:53:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 185 transitions. [2023-12-24 16:53:09,200 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 185 transitions. Word has length 190 [2023-12-24 16:53:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:09,200 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 185 transitions. [2023-12-24 16:53:09,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:53:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 185 transitions. [2023-12-24 16:53:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-24 16:53:09,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:09,202 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:09,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:53:09,418 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 16:53:09,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:53:09,619 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:09,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1859586557, now seen corresponding path program 1 times [2023-12-24 16:53:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:09,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396055104] [2023-12-24 16:53:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:09,620 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 16:53:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:09,621 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 16:53:09,622 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 16:53:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:10,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:53:10,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:10,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:53:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 31 proven. 457 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2023-12-24 16:53:10,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:53:11,319 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:53:11,319 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 30 treesize of output 25 [2023-12-24 16:53:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 27 proven. 114 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2023-12-24 16:53:11,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396055104] [2023-12-24 16:53:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396055104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:53:11,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:53:11,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-24 16:53:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281346214] [2023-12-24 16:53:11,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:53:11,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 16:53:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 16:53:11,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:53:11,361 INFO L87 Difference]: Start difference. First operand 146 states and 185 transitions. Second operand has 21 states, 17 states have (on average 8.117647058823529) internal successors, (138), 19 states have internal predecessors, (138), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-24 16:53:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:12,140 INFO L93 Difference]: Finished difference Result 318 states and 398 transitions. [2023-12-24 16:53:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 16:53:12,141 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.117647058823529) internal successors, (138), 19 states have internal predecessors, (138), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) Word has length 192 [2023-12-24 16:53:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:12,142 INFO L225 Difference]: With dead ends: 318 [2023-12-24 16:53:12,142 INFO L226 Difference]: Without dead ends: 173 [2023-12-24 16:53:12,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 363 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:53:12,143 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 362 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:12,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 850 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:53:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-24 16:53:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 146. [2023-12-24 16:53:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 115 states have internal predecessors, (134), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 16:53:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 184 transitions. [2023-12-24 16:53:12,165 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 184 transitions. Word has length 192 [2023-12-24 16:53:12,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:12,165 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 184 transitions. [2023-12-24 16:53:12,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.117647058823529) internal successors, (138), 19 states have internal predecessors, (138), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-24 16:53:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 184 transitions. [2023-12-24 16:53:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-24 16:53:12,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:12,167 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:12,176 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 16:53:12,367 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 16:53:12,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:12,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1775931874, now seen corresponding path program 1 times [2023-12-24 16:53:12,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:12,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656224631] [2023-12-24 16:53:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:12,368 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 16:53:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:12,369 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 16:53:12,370 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 16:53:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:12,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:53:12,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:13,043 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 27 treesize of output 23 [2023-12-24 16:53:13,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 16:53:13,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:53:13,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:53:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-12-24 16:53:13,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:53:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:53:17,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656224631] [2023-12-24 16:53:17,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656224631] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:53:17,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:53:17,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 16 [2023-12-24 16:53:17,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497332839] [2023-12-24 16:53:17,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:17,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:53:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:17,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:53:17,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=204, Unknown=1, NotChecked=0, Total=240 [2023-12-24 16:53:17,513 INFO L87 Difference]: Start difference. First operand 146 states and 184 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:53:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:41,170 INFO L93 Difference]: Finished difference Result 415 states and 515 transitions. [2023-12-24 16:53:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:53:41,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 194 [2023-12-24 16:53:41,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:41,171 INFO L225 Difference]: With dead ends: 415 [2023-12-24 16:53:41,171 INFO L226 Difference]: Without dead ends: 270 [2023-12-24 16:53:41,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=100, Invalid=450, Unknown=2, NotChecked=0, Total=552 [2023-12-24 16:53:41,172 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 210 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:41,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1377 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:53:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-24 16:53:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 251. [2023-12-24 16:53:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 207 states have (on average 1.1642512077294687) internal successors, (241), 208 states have internal predecessors, (241), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-24 16:53:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 307 transitions. [2023-12-24 16:53:41,190 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 307 transitions. Word has length 194 [2023-12-24 16:53:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:41,191 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 307 transitions. [2023-12-24 16:53:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:53:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 307 transitions. [2023-12-24 16:53:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-24 16:53:41,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:41,192 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:41,208 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 (26)] Forceful destruction successful, exit code 0 [2023-12-24 16:53:41,408 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 16:53:41,409 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:41,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:41,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1507918172, now seen corresponding path program 1 times [2023-12-24 16:53:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:41,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879097141] [2023-12-24 16:53:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:41,410 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 16:53:41,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:41,411 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 16:53:41,436 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 16:53:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:41,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:53:41,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:43,382 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 33 treesize of output 21 [2023-12-24 16:53:43,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:53:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 12 proven. 748 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2023-12-24 16:53:43,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:53:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:53:43,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879097141] [2023-12-24 16:53:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879097141] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:53:43,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:53:43,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:53:43,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948145300] [2023-12-24 16:53:43,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:43,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:53:43,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:43,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:53:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:53:43,674 INFO L87 Difference]: Start difference. First operand 251 states and 307 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:53:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:43,825 INFO L93 Difference]: Finished difference Result 528 states and 646 transitions. [2023-12-24 16:53:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:53:43,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 194 [2023-12-24 16:53:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:43,827 INFO L225 Difference]: With dead ends: 528 [2023-12-24 16:53:43,827 INFO L226 Difference]: Without dead ends: 278 [2023-12-24 16:53:43,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:53:43,828 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 153 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:43,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 491 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:53:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-24 16:53:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 253. [2023-12-24 16:53:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 206 states have (on average 1.1553398058252426) internal successors, (238), 207 states have internal predecessors, (238), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:53:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2023-12-24 16:53:43,847 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 194 [2023-12-24 16:53:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:43,847 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2023-12-24 16:53:43,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:53:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2023-12-24 16:53:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-24 16:53:43,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:43,848 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:43,856 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 16:53:44,056 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 16:53:44,056 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:44,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1489676124, now seen corresponding path program 1 times [2023-12-24 16:53:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678965349] [2023-12-24 16:53:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:44,057 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 16:53:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:44,058 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 16:53:44,059 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 16:53:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:44,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:53:44,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:46,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:53:46,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 16:53:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 12 proven. 748 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2023-12-24 16:53:46,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:53:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:53:46,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678965349] [2023-12-24 16:53:46,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678965349] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:53:46,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:53:46,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:53:46,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972808954] [2023-12-24 16:53:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:46,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:53:46,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:53:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:53:46,402 INFO L87 Difference]: Start difference. First operand 253 states and 308 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:53:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:46,531 INFO L93 Difference]: Finished difference Result 512 states and 620 transitions. [2023-12-24 16:53:46,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:53:46,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 194 [2023-12-24 16:53:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:46,557 INFO L225 Difference]: With dead ends: 512 [2023-12-24 16:53:46,557 INFO L226 Difference]: Without dead ends: 260 [2023-12-24 16:53:46,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:53:46,558 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 92 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:46,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 614 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:53:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-24 16:53:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2023-12-24 16:53:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 209 states have (on average 1.1483253588516746) internal successors, (240), 210 states have internal predecessors, (240), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:53:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 310 transitions. [2023-12-24 16:53:46,602 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 310 transitions. Word has length 194 [2023-12-24 16:53:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:46,603 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 310 transitions. [2023-12-24 16:53:46,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:53:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 310 transitions. [2023-12-24 16:53:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-24 16:53:46,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:46,604 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:46,615 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 16:53:46,815 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 16:53:46,816 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:46,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash 478558874, now seen corresponding path program 1 times [2023-12-24 16:53:46,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:46,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301674700] [2023-12-24 16:53:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:46,817 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 16:53:46,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:46,818 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 16:53:46,836 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 16:53:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:47,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:53:47,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:47,517 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 27 treesize of output 23 [2023-12-24 16:53:47,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 16:53:47,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:53:47,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:53:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-24 16:53:47,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:53:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:53:52,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:52,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301674700] [2023-12-24 16:53:52,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301674700] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:53:52,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:53:52,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 16 [2023-12-24 16:53:52,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192966958] [2023-12-24 16:53:52,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:52,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:53:52,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:53:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=204, Unknown=1, NotChecked=0, Total=240 [2023-12-24 16:53:52,026 INFO L87 Difference]: Start difference. First operand 257 states and 310 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:08,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:08,256 INFO L93 Difference]: Finished difference Result 550 states and 658 transitions. [2023-12-24 16:54:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:54:08,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 194 [2023-12-24 16:54:08,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:08,258 INFO L225 Difference]: With dead ends: 550 [2023-12-24 16:54:08,258 INFO L226 Difference]: Without dead ends: 294 [2023-12-24 16:54:08,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=84, Invalid=377, Unknown=1, NotChecked=0, Total=462 [2023-12-24 16:54:08,259 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 156 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:08,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1657 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:54:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-24 16:54:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2023-12-24 16:54:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 230 states have (on average 1.1304347826086956) internal successors, (260), 232 states have internal predecessors, (260), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-24 16:54:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 346 transitions. [2023-12-24 16:54:08,298 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 346 transitions. Word has length 194 [2023-12-24 16:54:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:08,299 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 346 transitions. [2023-12-24 16:54:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 346 transitions. [2023-12-24 16:54:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-24 16:54:08,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:08,300 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:08,307 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 16:54:08,506 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 16:54:08,507 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:08,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash 245486483, now seen corresponding path program 1 times [2023-12-24 16:54:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:08,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202791510] [2023-12-24 16:54:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:08,508 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 16:54:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:08,509 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 16:54:08,511 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 16:54:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:08,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:54:08,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:09,365 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 33 treesize of output 21 [2023-12-24 16:54:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 21 proven. 327 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-12-24 16:54:09,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:09,653 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:54:09,654 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 20 treesize of output 19 [2023-12-24 16:54:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-24 16:54:09,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202791510] [2023-12-24 16:54:09,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202791510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:54:09,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:54:09,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:54:09,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257783307] [2023-12-24 16:54:09,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:54:09,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:54:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:09,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:54:09,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:54:09,726 INFO L87 Difference]: Start difference. First operand 291 states and 346 transitions. Second operand has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 2 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:54:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:10,207 INFO L93 Difference]: Finished difference Result 591 states and 703 transitions. [2023-12-24 16:54:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:54:10,208 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 2 states have call predecessors, (50), 4 states have call successors, (50) Word has length 197 [2023-12-24 16:54:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:10,209 INFO L225 Difference]: With dead ends: 591 [2023-12-24 16:54:10,209 INFO L226 Difference]: Without dead ends: 333 [2023-12-24 16:54:10,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:54:10,210 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 149 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:10,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 503 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:54:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-24 16:54:10,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 291. [2023-12-24 16:54:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 230 states have (on average 1.1217391304347826) internal successors, (258), 232 states have internal predecessors, (258), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-24 16:54:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 344 transitions. [2023-12-24 16:54:10,238 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 344 transitions. Word has length 197 [2023-12-24 16:54:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:10,238 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 344 transitions. [2023-12-24 16:54:10,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (50), 2 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:54:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 344 transitions. [2023-12-24 16:54:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-24 16:54:10,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:10,239 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:10,247 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 16:54:10,447 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 16:54:10,447 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:10,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1929854861, now seen corresponding path program 1 times [2023-12-24 16:54:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093468362] [2023-12-24 16:54:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:10,448 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 16:54:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:10,449 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 16:54:10,451 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 16:54:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:10,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:54:10,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:12,488 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 88 treesize of output 52 [2023-12-24 16:54:12,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:54:12,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:54:12,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:54:12,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:54:12,668 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 64 treesize of output 24 [2023-12-24 16:54:12,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:54:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:54:12,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:23,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093468362] [2023-12-24 16:54:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093468362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1610496383] [2023-12-24 16:54:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:54:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:54:23,449 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:54:23,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-24 16:54:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:24,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 16:54:24,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:26,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:54:27,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:54:27,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:54:27,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:54:27,848 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 88 treesize of output 52 [2023-12-24 16:54:28,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:54:28,417 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 64 treesize of output 24 [2023-12-24 16:54:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:54:28,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1610496383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:36,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:54:36,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2023-12-24 16:54:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335073691] [2023-12-24 16:54:36,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:54:36,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 16:54:36,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:36,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 16:54:36,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:54:36,153 INFO L87 Difference]: Start difference. First operand 291 states and 344 transitions. Second operand has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 16 states have internal predecessors, (128), 4 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:54:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:44,440 INFO L93 Difference]: Finished difference Result 825 states and 988 transitions. [2023-12-24 16:54:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:54:44,443 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 16 states have internal predecessors, (128), 4 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) Word has length 199 [2023-12-24 16:54:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:44,445 INFO L225 Difference]: With dead ends: 825 [2023-12-24 16:54:44,445 INFO L226 Difference]: Without dead ends: 567 [2023-12-24 16:54:44,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 464 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:54:44,446 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 511 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:44,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1527 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 16:54:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-12-24 16:54:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 461. [2023-12-24 16:54:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 364 states have (on average 1.120879120879121) internal successors, (408), 368 states have internal predecessors, (408), 70 states have call successors, (70), 26 states have call predecessors, (70), 26 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-24 16:54:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 548 transitions. [2023-12-24 16:54:44,544 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 548 transitions. Word has length 199 [2023-12-24 16:54:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:44,545 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 548 transitions. [2023-12-24 16:54:44,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 16 states have internal predecessors, (128), 4 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:54:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 548 transitions. [2023-12-24 16:54:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-24 16:54:44,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:44,546 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:44,553 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 16:54:44,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2023-12-24 16:54:44,961 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=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:54:44,961 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:44,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2070600969, now seen corresponding path program 1 times [2023-12-24 16:54:44,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:44,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962965204] [2023-12-24 16:54:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:44,962 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 16:54:44,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:44,963 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 16:54:44,964 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 16:54:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:45,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:54:45,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:46,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:54:46,551 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 125 treesize of output 89 [2023-12-24 16:54:46,552 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 113 treesize of output 65 [2023-12-24 16:54:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:54:46,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:54:46,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962965204] [2023-12-24 16:54:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962965204] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:46,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:54:46,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-24 16:54:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654454857] [2023-12-24 16:54:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:54:46,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:54:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:54:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:54:46,872 INFO L87 Difference]: Start difference. First operand 461 states and 548 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:48,945 INFO L93 Difference]: Finished difference Result 1097 states and 1299 transitions. [2023-12-24 16:54:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:54:48,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 199 [2023-12-24 16:54:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:48,948 INFO L225 Difference]: With dead ends: 1097 [2023-12-24 16:54:48,948 INFO L226 Difference]: Without dead ends: 669 [2023-12-24 16:54:48,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:54:48,949 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 272 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:48,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 489 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 123 Invalid, 2 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 16:54:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-24 16:54:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 383. [2023-12-24 16:54:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 319 states have (on average 1.1191222570532915) internal successors, (357), 321 states have internal predecessors, (357), 44 states have call successors, (44), 19 states have call predecessors, (44), 19 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:54:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 445 transitions. [2023-12-24 16:54:48,992 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 445 transitions. Word has length 199 [2023-12-24 16:54:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:48,992 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 445 transitions. [2023-12-24 16:54:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 445 transitions. [2023-12-24 16:54:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-24 16:54:48,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:48,993 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:49,003 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 (33)] Ended with exit code 0 [2023-12-24 16:54:49,201 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 16:54:49,201 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:49,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2013283085, now seen corresponding path program 1 times [2023-12-24 16:54:49,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:49,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627934462] [2023-12-24 16:54:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:49,202 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 16:54:49,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:49,204 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 16:54:49,205 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 16:54:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:49,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:54:49,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:49,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 16:54:49,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 16:54:50,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:54:50,337 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 120 treesize of output 50 [2023-12-24 16:54:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:54:50,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:54:50,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627934462] [2023-12-24 16:54:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627934462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:54:50,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:54:50,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:54:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558369572] [2023-12-24 16:54:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:54:50,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:54:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:50,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:54:50,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:54:50,355 INFO L87 Difference]: Start difference. First operand 383 states and 445 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:50,997 INFO L93 Difference]: Finished difference Result 479 states and 570 transitions. [2023-12-24 16:54:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:54:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 199 [2023-12-24 16:54:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:51,001 INFO L225 Difference]: With dead ends: 479 [2023-12-24 16:54:51,001 INFO L226 Difference]: Without dead ends: 477 [2023-12-24 16:54:51,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:54:51,002 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 125 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:51,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 699 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:54:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-24 16:54:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 314. [2023-12-24 16:54:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 263 states have (on average 1.1254752851711027) internal successors, (296), 264 states have internal predecessors, (296), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:54:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 368 transitions. [2023-12-24 16:54:51,050 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 368 transitions. Word has length 199 [2023-12-24 16:54:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:51,050 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 368 transitions. [2023-12-24 16:54:51,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 368 transitions. [2023-12-24 16:54:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-24 16:54:51,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:51,052 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:51,061 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 16:54:51,261 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 16:54:51,261 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:51,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2013342667, now seen corresponding path program 1 times [2023-12-24 16:54:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:51,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388389554] [2023-12-24 16:54:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:51,263 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 16:54:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:51,264 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 16:54:51,264 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 16:54:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:51,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:54:51,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:52,278 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 18 treesize of output 14 [2023-12-24 16:54:52,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:54:52,441 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 55 treesize of output 35 [2023-12-24 16:54:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 1 proven. 187 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-24 16:54:52,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:54:52,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:52,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388389554] [2023-12-24 16:54:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388389554] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:52,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:54:52,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 16:54:52,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346089414] [2023-12-24 16:54:52,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:54:52,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:54:52,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:54:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:54:52,609 INFO L87 Difference]: Start difference. First operand 314 states and 368 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:52,730 INFO L93 Difference]: Finished difference Result 616 states and 730 transitions. [2023-12-24 16:54:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:54:52,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 199 [2023-12-24 16:54:52,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:52,732 INFO L225 Difference]: With dead ends: 616 [2023-12-24 16:54:52,732 INFO L226 Difference]: Without dead ends: 343 [2023-12-24 16:54:52,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:54:52,733 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 91 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:52,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 712 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:54:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-24 16:54:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 342. [2023-12-24 16:54:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 278 states have (on average 1.1151079136690647) internal successors, (310), 279 states have internal predecessors, (310), 48 states have call successors, (48), 15 states have call predecessors, (48), 15 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:54:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 406 transitions. [2023-12-24 16:54:52,783 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 406 transitions. Word has length 199 [2023-12-24 16:54:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:52,783 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 406 transitions. [2023-12-24 16:54:52,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 406 transitions. [2023-12-24 16:54:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-24 16:54:52,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:52,784 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:52,794 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 16:54:52,991 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 16:54:52,992 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:52,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:52,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1261254343, now seen corresponding path program 1 times [2023-12-24 16:54:52,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:52,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023050350] [2023-12-24 16:54:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:52,993 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 16:54:52,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:52,994 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 16:54:52,995 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 [2023-12-24 16:54:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:53,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:54:53,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:54,159 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 16:54:54,344 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 72 treesize of output 52 [2023-12-24 16:54:54,347 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 42 treesize of output 30 [2023-12-24 16:54:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 55 proven. 565 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-24 16:54:54,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:54:54,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:54,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023050350] [2023-12-24 16:54:54,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023050350] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:54,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:54:54,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 18 [2023-12-24 16:54:54,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910969129] [2023-12-24 16:54:54,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:54:54,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:54:54,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:54,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:54:54,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:54:54,556 INFO L87 Difference]: Start difference. First operand 342 states and 406 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:54,750 INFO L93 Difference]: Finished difference Result 847 states and 987 transitions. [2023-12-24 16:54:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:54:54,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 199 [2023-12-24 16:54:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:54,752 INFO L225 Difference]: With dead ends: 847 [2023-12-24 16:54:54,752 INFO L226 Difference]: Without dead ends: 570 [2023-12-24 16:54:54,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:54:54,776 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 119 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:54,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 903 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:54:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-24 16:54:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 557. [2023-12-24 16:54:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 470 states have (on average 1.102127659574468) internal successors, (518), 472 states have internal predecessors, (518), 64 states have call successors, (64), 22 states have call predecessors, (64), 22 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 16:54:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 646 transitions. [2023-12-24 16:54:54,887 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 646 transitions. Word has length 199 [2023-12-24 16:54:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:54,887 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 646 transitions. [2023-12-24 16:54:54,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:54:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 646 transitions. [2023-12-24 16:54:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-24 16:54:54,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:54,889 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:54,898 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 0 [2023-12-24 16:54:55,096 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 16:54:55,096 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:55,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash 231895045, now seen corresponding path program 1 times [2023-12-24 16:54:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779219040] [2023-12-24 16:54:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:55,097 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 16:54:55,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:55,099 INFO L229 MonitoredProcess]: Starting monitored process 37 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 16:54:55,134 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 (37)] Waiting until timeout for monitored process [2023-12-24 16:54:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:55,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:54:55,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:56,218 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 42 treesize of output 26 [2023-12-24 16:54:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 31 proven. 457 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2023-12-24 16:54:56,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:56,636 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:54:56,636 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 30 treesize of output 25 [2023-12-24 16:54:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 27 proven. 114 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2023-12-24 16:54:56,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779219040] [2023-12-24 16:54:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779219040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:54:56,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:54:56,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-24 16:54:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15695992] [2023-12-24 16:54:56,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:54:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 16:54:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 16:54:56,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:54:56,678 INFO L87 Difference]: Start difference. First operand 557 states and 646 transitions. Second operand has 22 states, 18 states have (on average 7.0) internal successors, (126), 20 states have internal predecessors, (126), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-24 16:54:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:57,615 INFO L93 Difference]: Finished difference Result 854 states and 987 transitions. [2023-12-24 16:54:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:54:57,616 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.0) internal successors, (126), 20 states have internal predecessors, (126), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) Word has length 199 [2023-12-24 16:54:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:57,617 INFO L225 Difference]: With dead ends: 854 [2023-12-24 16:54:57,617 INFO L226 Difference]: Without dead ends: 362 [2023-12-24 16:54:57,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 376 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:54:57,618 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 171 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:57,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 942 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:54:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-24 16:54:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 344. [2023-12-24 16:54:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 279 states have (on average 1.0788530465949822) internal successors, (301), 280 states have internal predecessors, (301), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:54:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 397 transitions. [2023-12-24 16:54:57,679 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 397 transitions. Word has length 199 [2023-12-24 16:54:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:57,680 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 397 transitions. [2023-12-24 16:54:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.0) internal successors, (126), 20 states have internal predecessors, (126), 7 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (50), 5 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-24 16:54:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 397 transitions. [2023-12-24 16:54:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-24 16:54:57,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:57,681 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:57,688 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 (37)] Forceful destruction successful, exit code 0 [2023-12-24 16:54:57,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 16:54:57,884 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:57,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1379013869, now seen corresponding path program 1 times [2023-12-24 16:54:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417032662] [2023-12-24 16:54:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:57,885 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 16:54:57,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:57,893 INFO L229 MonitoredProcess]: Starting monitored process 38 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 16:54:57,894 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 (38)] Waiting until timeout for monitored process [2023-12-24 16:54:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:58,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:54:58,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:54:58,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:54:58,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417032662] [2023-12-24 16:54:58,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417032662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:54:58,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:54:58,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:54:58,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972681843] [2023-12-24 16:54:58,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:54:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:54:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:54:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:54:58,298 INFO L87 Difference]: Start difference. First operand 344 states and 397 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 16:54:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:58,374 INFO L93 Difference]: Finished difference Result 627 states and 718 transitions. [2023-12-24 16:54:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:54:58,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 199 [2023-12-24 16:54:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:58,375 INFO L225 Difference]: With dead ends: 627 [2023-12-24 16:54:58,375 INFO L226 Difference]: Without dead ends: 348 [2023-12-24 16:54:58,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 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 16:54:58,376 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 7 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:58,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 418 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:54:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-24 16:54:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2023-12-24 16:54:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 279 states have (on average 1.075268817204301) internal successors, (300), 280 states have internal predecessors, (300), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:54:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 396 transitions. [2023-12-24 16:54:58,420 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 396 transitions. Word has length 199 [2023-12-24 16:54:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:58,420 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 396 transitions. [2023-12-24 16:54:58,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 16:54:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 396 transitions. [2023-12-24 16:54:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-24 16:54:58,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:58,421 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:58,430 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 (38)] Forceful destruction successful, exit code 0 [2023-12-24 16:54:58,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 16:54:58,628 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:58,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1911342999, now seen corresponding path program 1 times [2023-12-24 16:54:58,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:58,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580199892] [2023-12-24 16:54:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:58,629 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 16:54:58,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:58,630 INFO L229 MonitoredProcess]: Starting monitored process 39 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 16:54:58,664 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 (39)] Waiting until timeout for monitored process [2023-12-24 16:54:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:59,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:54:59,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:59,299 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 21 treesize of output 10 [2023-12-24 16:54:59,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:54:59,412 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 56 treesize of output 20 [2023-12-24 16:54:59,456 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 62 treesize of output 26 [2023-12-24 16:54:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 16:54:59,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:54:59,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:59,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580199892] [2023-12-24 16:54:59,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580199892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:54:59,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:54:59,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:54:59,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338560133] [2023-12-24 16:54:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:54:59,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:54:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:59,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:54:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:54:59,517 INFO L87 Difference]: Start difference. First operand 344 states and 396 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:55:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:02,666 INFO L93 Difference]: Finished difference Result 800 states and 911 transitions. [2023-12-24 16:55:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:55:02,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 201 [2023-12-24 16:55:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:02,669 INFO L225 Difference]: With dead ends: 800 [2023-12-24 16:55:02,669 INFO L226 Difference]: Without dead ends: 521 [2023-12-24 16:55:02,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:55:02,670 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 276 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:02,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 995 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 16:55:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-12-24 16:55:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 336. [2023-12-24 16:55:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 268 states have (on average 1.0634328358208955) internal successors, (285), 269 states have internal predecessors, (285), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 16:55:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 385 transitions. [2023-12-24 16:55:02,736 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 385 transitions. Word has length 201 [2023-12-24 16:55:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:02,736 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 385 transitions. [2023-12-24 16:55:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 16:55:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 385 transitions. [2023-12-24 16:55:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-24 16:55:02,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:02,738 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:02,745 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 (39)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:02,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 16:55:02,945 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:02,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2052089107, now seen corresponding path program 1 times [2023-12-24 16:55:02,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:02,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996694136] [2023-12-24 16:55:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:02,946 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 16:55:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:02,947 INFO L229 MonitoredProcess]: Starting monitored process 40 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 16:55:02,948 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 (40)] Waiting until timeout for monitored process [2023-12-24 16:55:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:03,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:55:03,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:04,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:55:04,430 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 86 treesize of output 50 [2023-12-24 16:55:04,474 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 70 treesize of output 34 [2023-12-24 16:55:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:55:04,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:04,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:04,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996694136] [2023-12-24 16:55:04,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996694136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:55:04,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2140309352] [2023-12-24 16:55:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:04,751 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:55:04,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:55:04,752 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:55:04,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-24 16:55:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:06,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 16:55:06,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:07,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:55:08,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:55:08,579 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 86 treesize of output 50 [2023-12-24 16:55:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 16:55:08,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:08,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2140309352] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:55:08,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:55:08,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2023-12-24 16:55:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147028792] [2023-12-24 16:55:08,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:55:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 16:55:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 16:55:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:55:08,813 INFO L87 Difference]: Start difference. First operand 336 states and 385 transitions. Second operand has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 4 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:55:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:18,475 INFO L93 Difference]: Finished difference Result 1127 states and 1267 transitions. [2023-12-24 16:55:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 16:55:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 4 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) Word has length 201 [2023-12-24 16:55:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:18,478 INFO L225 Difference]: With dead ends: 1127 [2023-12-24 16:55:18,478 INFO L226 Difference]: Without dead ends: 864 [2023-12-24 16:55:18,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 465 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=745, Invalid=3161, Unknown=0, NotChecked=0, Total=3906 [2023-12-24 16:55:18,479 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 640 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:18,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1328 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-24 16:55:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-24 16:55:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 361. [2023-12-24 16:55:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 291 states have (on average 1.0618556701030928) internal successors, (309), 292 states have internal predecessors, (309), 51 states have call successors, (51), 18 states have call predecessors, (51), 18 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 16:55:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 411 transitions. [2023-12-24 16:55:18,560 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 411 transitions. Word has length 201 [2023-12-24 16:55:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:18,561 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 411 transitions. [2023-12-24 16:55:18,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 4 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-24 16:55:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 411 transitions. [2023-12-24 16:55:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-24 16:55:18,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:18,562 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:18,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:18,783 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 (40)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,40 /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 16:55:18,980 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:18,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash -704538159, now seen corresponding path program 1 times [2023-12-24 16:55:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:18,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522550316] [2023-12-24 16:55:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:18,981 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 16:55:18,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:18,983 INFO L229 MonitoredProcess]: Starting monitored process 42 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 16:55:18,984 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 (42)] Waiting until timeout for monitored process [2023-12-24 16:55:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:19,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:55:19,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-24 16:55:19,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:55:19,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:19,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522550316] [2023-12-24 16:55:19,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522550316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:55:19,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:55:19,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:55:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918620334] [2023-12-24 16:55:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:55:19,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:55:19,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:55:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:55:19,398 INFO L87 Difference]: Start difference. First operand 361 states and 411 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 16:55:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:19,665 INFO L93 Difference]: Finished difference Result 599 states and 675 transitions. [2023-12-24 16:55:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:55:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 201 [2023-12-24 16:55:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:19,666 INFO L225 Difference]: With dead ends: 599 [2023-12-24 16:55:19,666 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:55:19,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:55:19,666 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 7 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:19,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 476 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:55:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:55:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:55:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 16:55:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:55:19,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 201 [2023-12-24 16:55:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:19,667 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:55:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 16:55:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:55:19,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:55:19,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:55:19,681 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 (42)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:19,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 16:55:19,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:55:57,201 WARN L293 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 220 DAG size of output: 263 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:56:08,524 WARN L293 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 236 DAG size of output: 279 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:56:23,371 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 251 DAG size of output: 294 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:56:33,094 WARN L293 SmtUtils]: Spent 9.72s on a formula simplification. DAG size of input: 251 DAG size of output: 294 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:58:35,742 WARN L293 SmtUtils]: Spent 1.93m on a formula simplification. DAG size of input: 331 DAG size of output: 407 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:58:47,052 WARN L293 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 236 DAG size of output: 279 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:58:56,753 WARN L293 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 251 DAG size of output: 294 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:59:06,205 WARN L293 SmtUtils]: Spent 9.45s on a formula simplification. DAG size of input: 275 DAG size of output: 274 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:59:18,657 WARN L293 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 236 DAG size of output: 279 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:59:24,730 WARN L293 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 214 DAG size of output: 232 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:59:33,272 WARN L293 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 215 DAG size of output: 186 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:59:44,709 WARN L293 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 236 DAG size of output: 279 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:59:53,725 WARN L293 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 236 DAG size of output: 279 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:00:03,646 WARN L293 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 252 DAG size of output: 242 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:00:09,103 WARN L293 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 212 DAG size of output: 183 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:02:14,586 WARN L293 SmtUtils]: Spent 2.05m on a formula simplification. DAG size of input: 334 DAG size of output: 414 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:02:25,774 WARN L293 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 237 DAG size of output: 227 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:02:31,514 WARN L293 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 211 DAG size of output: 222 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:02:41,392 WARN L293 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 274 DAG size of output: 348 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:02:51,377 WARN L293 SmtUtils]: Spent 9.98s on a formula simplification. DAG size of input: 251 DAG size of output: 294 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:03:03,267 WARN L293 SmtUtils]: Spent 9.08s on a formula simplification. DAG size of input: 252 DAG size of output: 242 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:04:58,177 WARN L293 SmtUtils]: Spent 1.83m on a formula simplification. DAG size of input: 332 DAG size of output: 325 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 17:05:25,931 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∧-2-4-11-2-4-2-8-2-8-4-7-4-10-10-7-10-6-10-6-9-6-8-6-7-6-6-6-2-6-2-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-48-11-10-8-10-10-9-10-8-7-7-10-10-7-10-6-10-6-9-6-8-6-7-6-6-6-2-6-2-5-1 context. [2023-12-24 17:05:25,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 17:05:25,936 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 17:05:25,938 INFO L158 Benchmark]: Toolchain (without parser) took 877642.02ms. Allocated memory was 185.6MB in the beginning and 857.7MB in the end (delta: 672.1MB). Free memory was 142.4MB in the beginning and 689.6MB in the end (delta: -547.2MB). Peak memory consumption was 126.5MB. Max. memory is 8.0GB. [2023-12-24 17:05:25,938 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:05:25,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.35ms. Allocated memory is still 185.6MB. Free memory was 142.0MB in the beginning and 126.3MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 17:05:25,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.08ms. Allocated memory is still 185.6MB. Free memory was 126.3MB in the beginning and 122.8MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 17:05:25,939 INFO L158 Benchmark]: Boogie Preprocessor took 116.50ms. Allocated memory is still 185.6MB. Free memory was 122.8MB in the beginning and 112.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 17:05:25,939 INFO L158 Benchmark]: RCFGBuilder took 1103.77ms. Allocated memory was 185.6MB in the beginning and 297.8MB in the end (delta: 112.2MB). Free memory was 112.3MB in the beginning and 221.6MB in the end (delta: -109.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-24 17:05:25,939 INFO L158 Benchmark]: TraceAbstraction took 876113.22ms. Allocated memory was 297.8MB in the beginning and 857.7MB in the end (delta: 559.9MB). Free memory was 221.0MB in the beginning and 689.6MB in the end (delta: -468.5MB). Peak memory consumption was 91.9MB. Max. memory is 8.0GB. [2023-12-24 17:05:25,940 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.35ms. Allocated memory is still 185.6MB. Free memory was 142.0MB in the beginning and 126.3MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.08ms. Allocated memory is still 185.6MB. Free memory was 126.3MB in the beginning and 122.8MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 116.50ms. Allocated memory is still 185.6MB. Free memory was 122.8MB in the beginning and 112.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1103.77ms. Allocated memory was 185.6MB in the beginning and 297.8MB in the end (delta: 112.2MB). Free memory was 112.3MB in the beginning and 221.6MB in the end (delta: -109.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 876113.22ms. Allocated memory was 297.8MB in the beginning and 857.7MB in the end (delta: 559.9MB). Free memory was 221.0MB in the beginning and 689.6MB in the end (delta: -468.5MB). Peak memory consumption was 91.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-4-18-5-10-4-16-5-15-5-18-5-10-4-10-3-10-2-10-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-12-18-9-10-16-16-15-15-18-18-10-10-10-10-10-10-10-10-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown