/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-46.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:39:03,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:39:03,467 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 16:39:03,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:39:03,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:39:03,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:39:03,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:39:03,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:39:03,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:39:03,495 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:39:03,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:39:03,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:39:03,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:39:03,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:39:03,496 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:39:03,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:39:03,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:39:03,496 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:39:03,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:39:03,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:39:03,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:39:03,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:39:03,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:39:03,497 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:39:03,497 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:39:03,497 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:39:03,497 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:39:03,498 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:39:03,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:39:03,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:39:03,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:39:03,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:39:03,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:39:03,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:39:03,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:39:03,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:39:03,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:39:03,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:39:03,499 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:39:03,499 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:39:03,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:39:03,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:39:03,501 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:39:03,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:39:03,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:39:03,501 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:39:03,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:39:03,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:39:03,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:39:03,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:39:03,657 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:39:03,657 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:39:03,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i [2023-12-24 16:39:04,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:39:04,678 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:39:04,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-46.i [2023-12-24 16:39:04,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46def036/2b17c1226ab44fdbbdfcee7e6702e4bf/FLAG38c856819 [2023-12-24 16:39:04,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46def036/2b17c1226ab44fdbbdfcee7e6702e4bf [2023-12-24 16:39:04,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:39:04,698 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:39:04,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:39:04,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:39:04,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:39:04,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:04,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369d8ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04, skipping insertion in model container [2023-12-24 16:39:04,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:04,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:39:04,830 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-46.i[916,929] [2023-12-24 16:39:04,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:39:04,881 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:39:04,889 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-46.i[916,929] [2023-12-24 16:39:04,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:39:04,921 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:39:04,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04 WrapperNode [2023-12-24 16:39:04,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:39:04,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:39:04,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:39:04,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:39:04,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:04,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:04,958 INFO L138 Inliner]: procedures = 33, calls = 137, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 406 [2023-12-24 16:39:04,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:39:04,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:39:04,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:39:04,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:39:04,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:04,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:04,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,008 INFO L175 MemorySlicer]: Split 101 memory accesses to 12 slices as follows [2, 12, 8, 17, 8, 8, 3, 6, 6, 8, 17, 6]. 17 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 16 writes are split as follows [0, 5, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1]. [2023-12-24 16:39:05,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:39:05,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:39:05,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:39:05,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:39:05,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (1/1) ... [2023-12-24 16:39:05,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:39:05,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:39:05,074 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 16:39:05,095 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 16:39:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:39:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 16:39:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 16:39:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 16:39:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 16:39:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 16:39:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 16:39:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 16:39:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 16:39:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2023-12-24 16:39:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2023-12-24 16:39:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#10 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#11 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 16:39:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 16:39:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2023-12-24 16:39:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2023-12-24 16:39:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#10 [2023-12-24 16:39:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#11 [2023-12-24 16:39:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:39:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:39:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:39:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:39:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:39:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:39:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:39:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:39:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 16:39:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 16:39:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2023-12-24 16:39:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2023-12-24 16:39:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#10 [2023-12-24 16:39:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#11 [2023-12-24 16:39:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:39:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:39:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:39:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:39:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:39:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:39:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:39:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:39:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:39:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:39:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:39:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:39:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:39:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:39:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:39:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:39:05,292 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:39:05,294 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:39:05,679 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:39:05,749 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:39:05,749 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:39:05,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:39:05 BoogieIcfgContainer [2023-12-24 16:39:05,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:39:05,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:39:05,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:39:05,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:39:05,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:39:04" (1/3) ... [2023-12-24 16:39:05,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef069ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:39:05, skipping insertion in model container [2023-12-24 16:39:05,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:39:04" (2/3) ... [2023-12-24 16:39:05,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef069ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:39:05, skipping insertion in model container [2023-12-24 16:39:05,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:39:05" (3/3) ... [2023-12-24 16:39:05,756 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-46.i [2023-12-24 16:39:05,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:39:05,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:39:05,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:39:05,814 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;@1d1fbee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:39:05,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:39:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:39:05,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 16:39:05,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:05,830 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:05,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:05,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1897482861, now seen corresponding path program 1 times [2023-12-24 16:39:05,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:05,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500698665] [2023-12-24 16:39:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:05,847 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 16:39:05,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:05,850 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 16:39:05,853 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 16:39:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:06,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:39:06,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-24 16:39:06,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:06,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500698665] [2023-12-24 16:39:06,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500698665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:06,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:06,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:39:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520824641] [2023-12-24 16:39:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:39:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:39:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:39:06,191 INFO L87 Difference]: Start difference. First operand has 86 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:39:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:06,242 INFO L93 Difference]: Finished difference Result 169 states and 268 transitions. [2023-12-24 16:39:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:39:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2023-12-24 16:39:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:06,251 INFO L225 Difference]: With dead ends: 169 [2023-12-24 16:39:06,251 INFO L226 Difference]: Without dead ends: 84 [2023-12-24 16:39:06,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 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 16:39:06,258 INFO L413 NwaCegarLoop]: 119 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, 119 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 16:39:06,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:39:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-24 16:39:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-24 16:39:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:39:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 123 transitions. [2023-12-24 16:39:06,286 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 123 transitions. Word has length 109 [2023-12-24 16:39:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:06,286 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 123 transitions. [2023-12-24 16:39:06,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:39:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 123 transitions. [2023-12-24 16:39:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 16:39:06,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:06,288 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:06,297 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 16:39:06,494 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 16:39:06,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:06,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:06,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1915345745, now seen corresponding path program 1 times [2023-12-24 16:39:06,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:06,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138070484] [2023-12-24 16:39:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:06,496 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 16:39:06,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:06,497 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 16:39:06,516 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 16:39:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:06,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:39:06,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:07,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:39:07,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 24 [2023-12-24 16:39:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:07,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:07,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:07,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138070484] [2023-12-24 16:39:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138070484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:07,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764396205] [2023-12-24 16:39:07,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:39:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:39:07,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:39:07,074 INFO L87 Difference]: Start difference. First operand 84 states and 123 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:07,578 INFO L93 Difference]: Finished difference Result 303 states and 443 transitions. [2023-12-24 16:39:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:39:07,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2023-12-24 16:39:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:07,580 INFO L225 Difference]: With dead ends: 303 [2023-12-24 16:39:07,581 INFO L226 Difference]: Without dead ends: 220 [2023-12-24 16:39:07,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:39:07,582 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 201 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:07,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 489 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:39:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-24 16:39:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2023-12-24 16:39:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 182 states have (on average 1.4230769230769231) internal successors, (259), 183 states have internal predecessors, (259), 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 16:39:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2023-12-24 16:39:07,596 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 317 transitions. Word has length 109 [2023-12-24 16:39:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:07,597 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 317 transitions. [2023-12-24 16:39:07,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 317 transitions. [2023-12-24 16:39:07,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 16:39:07,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:07,598 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:07,607 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 16:39:07,805 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 16:39:07,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:07,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1368504301, now seen corresponding path program 1 times [2023-12-24 16:39:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36630421] [2023-12-24 16:39:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:07,807 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 16:39:07,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:07,808 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 16:39:07,809 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 16:39:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:08,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:39:08,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:08,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:39:08,196 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 21 treesize of output 13 [2023-12-24 16:39:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:08,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:08,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:08,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36630421] [2023-12-24 16:39:08,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36630421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:08,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:08,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:08,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297072894] [2023-12-24 16:39:08,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:08,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:39:08,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:08,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:39:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:39:08,214 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:08,537 INFO L93 Difference]: Finished difference Result 434 states and 636 transitions. [2023-12-24 16:39:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:39:08,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2023-12-24 16:39:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:08,539 INFO L225 Difference]: With dead ends: 434 [2023-12-24 16:39:08,539 INFO L226 Difference]: Without dead ends: 220 [2023-12-24 16:39:08,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:39:08,541 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 199 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:08,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 545 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:39:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-24 16:39:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2023-12-24 16:39:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 182 states have (on average 1.4175824175824177) internal successors, (258), 183 states have internal predecessors, (258), 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 16:39:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 316 transitions. [2023-12-24 16:39:08,556 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 316 transitions. Word has length 109 [2023-12-24 16:39:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:08,557 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 316 transitions. [2023-12-24 16:39:08,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 316 transitions. [2023-12-24 16:39:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 16:39:08,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:08,558 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:08,565 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 16:39:08,765 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 16:39:08,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:08,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1110338863, now seen corresponding path program 1 times [2023-12-24 16:39:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:08,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996354779] [2023-12-24 16:39:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:08,766 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 16:39:08,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:08,767 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 16:39:08,771 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 16:39:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:08,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:39:08,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:08,981 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 12 treesize of output 8 [2023-12-24 16:39:09,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:39:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:09,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:09,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996354779] [2023-12-24 16:39:09,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996354779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:09,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:09,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:09,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844682130] [2023-12-24 16:39:09,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:09,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:09,020 INFO L87 Difference]: Start difference. First operand 215 states and 316 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:09,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:09,135 INFO L93 Difference]: Finished difference Result 688 states and 1012 transitions. [2023-12-24 16:39:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:39:09,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2023-12-24 16:39:09,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:09,139 INFO L225 Difference]: With dead ends: 688 [2023-12-24 16:39:09,139 INFO L226 Difference]: Without dead ends: 474 [2023-12-24 16:39:09,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:39:09,140 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 158 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:09,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 485 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:39:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-24 16:39:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 239. [2023-12-24 16:39:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 206 states have (on average 1.4029126213592233) internal successors, (289), 207 states have internal predecessors, (289), 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 16:39:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 347 transitions. [2023-12-24 16:39:09,164 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 347 transitions. Word has length 109 [2023-12-24 16:39:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:09,164 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 347 transitions. [2023-12-24 16:39:09,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 347 transitions. [2023-12-24 16:39:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:39:09,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:09,169 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:09,176 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 (5)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:09,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:09,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:09,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 869636614, now seen corresponding path program 1 times [2023-12-24 16:39:09,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:09,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348031001] [2023-12-24 16:39:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:09,377 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 16:39:09,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:09,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:09,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 16:39:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:09,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:39:09,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:10,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:39:10,462 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 94 treesize of output 34 [2023-12-24 16:39:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:10,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:10,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:10,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348031001] [2023-12-24 16:39:10,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348031001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:10,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 16:39:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242639804] [2023-12-24 16:39:10,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:10,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:39:10,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:39:10,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:39:10,506 INFO L87 Difference]: Start difference. First operand 239 states and 347 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:15,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:19,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:19,702 INFO L93 Difference]: Finished difference Result 818 states and 1187 transitions. [2023-12-24 16:39:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:39:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-24 16:39:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:19,705 INFO L225 Difference]: With dead ends: 818 [2023-12-24 16:39:19,705 INFO L226 Difference]: Without dead ends: 580 [2023-12-24 16:39:19,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:39:19,706 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 282 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:19,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1230 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 474 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2023-12-24 16:39:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-24 16:39:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 361. [2023-12-24 16:39:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 296 states have (on average 1.375) internal successors, (407), 298 states have internal predecessors, (407), 58 states have call successors, (58), 6 states have call predecessors, (58), 6 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 16:39:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 523 transitions. [2023-12-24 16:39:19,731 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 523 transitions. Word has length 111 [2023-12-24 16:39:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:19,731 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 523 transitions. [2023-12-24 16:39:19,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 523 transitions. [2023-12-24 16:39:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:39:19,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:19,732 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:19,742 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 (6)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:19,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:19,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:19,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -862655722, now seen corresponding path program 1 times [2023-12-24 16:39:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117733254] [2023-12-24 16:39:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:19,941 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 16:39:19,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:19,941 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 16:39:19,943 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 16:39:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:20,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:39:20,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:20,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:39:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-24 16:39:20,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:20,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:20,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117733254] [2023-12-24 16:39:20,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117733254] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:20,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:39:20,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-12-24 16:39:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088960460] [2023-12-24 16:39:20,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:20,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:20,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:39:20,678 INFO L87 Difference]: Start difference. First operand 361 states and 523 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:20,850 INFO L93 Difference]: Finished difference Result 888 states and 1274 transitions. [2023-12-24 16:39:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:39:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-24 16:39:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:20,853 INFO L225 Difference]: With dead ends: 888 [2023-12-24 16:39:20,853 INFO L226 Difference]: Without dead ends: 528 [2023-12-24 16:39:20,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:39:20,854 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 102 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:20,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 464 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:39:20,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-12-24 16:39:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 413. [2023-12-24 16:39:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 344 states have (on average 1.372093023255814) internal successors, (472), 348 states have internal predecessors, (472), 60 states have call successors, (60), 8 states have call predecessors, (60), 8 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:39:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 592 transitions. [2023-12-24 16:39:20,879 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 592 transitions. Word has length 111 [2023-12-24 16:39:20,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:20,880 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 592 transitions. [2023-12-24 16:39:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 592 transitions. [2023-12-24 16:39:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:39:20,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:20,881 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:20,888 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 (7)] Ended with exit code 0 [2023-12-24 16:39:21,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:21,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash -182597352, now seen corresponding path program 1 times [2023-12-24 16:39:21,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:21,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902796840] [2023-12-24 16:39:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:21,091 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 16:39:21,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:21,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:21,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 16:39:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:21,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:39:21,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:21,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:21,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902796840] [2023-12-24 16:39:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902796840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:21,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807538924] [2023-12-24 16:39:21,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:21,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:21,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:21,330 INFO L87 Difference]: Start difference. First operand 413 states and 592 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:21,411 INFO L93 Difference]: Finished difference Result 871 states and 1249 transitions. [2023-12-24 16:39:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:39:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-24 16:39:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:21,414 INFO L225 Difference]: With dead ends: 871 [2023-12-24 16:39:21,414 INFO L226 Difference]: Without dead ends: 459 [2023-12-24 16:39:21,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:39:21,415 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 36 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:21,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 469 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:39:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-12-24 16:39:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 423. [2023-12-24 16:39:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 354 states have (on average 1.3615819209039548) internal successors, (482), 358 states have internal predecessors, (482), 60 states have call successors, (60), 8 states have call predecessors, (60), 8 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:39:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 602 transitions. [2023-12-24 16:39:21,438 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 602 transitions. Word has length 111 [2023-12-24 16:39:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:21,438 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 602 transitions. [2023-12-24 16:39:21,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 602 transitions. [2023-12-24 16:39:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:39:21,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:21,440 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:21,448 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 (8)] Ended with exit code 0 [2023-12-24 16:39:21,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:21,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:21,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1690255276, now seen corresponding path program 1 times [2023-12-24 16:39:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073921282] [2023-12-24 16:39:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:21,646 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 16:39:21,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:21,647 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 16:39:21,647 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 16:39:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:21,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:39:21,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:22,424 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 16:39:22,496 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 16:39:22,507 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 16:39:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 28 proven. 192 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:39:22,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:22,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073921282] [2023-12-24 16:39:22,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073921282] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:22,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:39:22,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 18 [2023-12-24 16:39:22,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004382599] [2023-12-24 16:39:22,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:22,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:39:22,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:22,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:39:22,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:39:22,676 INFO L87 Difference]: Start difference. First operand 423 states and 602 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:22,895 INFO L93 Difference]: Finished difference Result 981 states and 1384 transitions. [2023-12-24 16:39:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:39:22,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-24 16:39:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:22,898 INFO L225 Difference]: With dead ends: 981 [2023-12-24 16:39:22,898 INFO L226 Difference]: Without dead ends: 559 [2023-12-24 16:39:22,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:39:22,900 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 125 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:22,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 700 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:39:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-12-24 16:39:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 511. [2023-12-24 16:39:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 406 states have (on average 1.3251231527093597) internal successors, (538), 412 states have internal predecessors, (538), 90 states have call successors, (90), 14 states have call predecessors, (90), 14 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 16:39:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 718 transitions. [2023-12-24 16:39:22,932 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 718 transitions. Word has length 111 [2023-12-24 16:39:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:22,932 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 718 transitions. [2023-12-24 16:39:22,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 718 transitions. [2023-12-24 16:39:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:39:22,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:22,934 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:22,940 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 (9)] Ended with exit code 0 [2023-12-24 16:39:23,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:23,136 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:23,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash -168947960, now seen corresponding path program 1 times [2023-12-24 16:39:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:23,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457611041] [2023-12-24 16:39:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:23,137 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 16:39:23,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:23,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:23,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 16:39:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:23,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:39:23,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:23,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:23,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:23,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457611041] [2023-12-24 16:39:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457611041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:23,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:39:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557791496] [2023-12-24 16:39:23,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:23,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:39:23,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:23,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:39:23,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:39:23,338 INFO L87 Difference]: Start difference. First operand 511 states and 718 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:23,402 INFO L93 Difference]: Finished difference Result 1027 states and 1447 transitions. [2023-12-24 16:39:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:39:23,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-24 16:39:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:23,404 INFO L225 Difference]: With dead ends: 1027 [2023-12-24 16:39:23,404 INFO L226 Difference]: Without dead ends: 530 [2023-12-24 16:39:23,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 16:39:23,405 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 355 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 16:39:23,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 355 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:39:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-24 16:39:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 511. [2023-12-24 16:39:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 406 states have (on average 1.312807881773399) internal successors, (533), 412 states have internal predecessors, (533), 90 states have call successors, (90), 14 states have call predecessors, (90), 14 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 16:39:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 713 transitions. [2023-12-24 16:39:23,427 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 713 transitions. Word has length 111 [2023-12-24 16:39:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:23,427 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 713 transitions. [2023-12-24 16:39:23,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 713 transitions. [2023-12-24 16:39:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:23,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:23,428 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:23,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:23,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:23,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:23,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1417082339, now seen corresponding path program 1 times [2023-12-24 16:39:23,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:23,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278854613] [2023-12-24 16:39:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:23,636 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 16:39:23,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:23,637 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 16:39:23,640 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 16:39:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:23,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:39:23,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:24,184 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 17 [2023-12-24 16:39:24,263 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 66 treesize of output 54 [2023-12-24 16:39:24,265 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 50 [2023-12-24 16:39:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 169 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 16:39:24,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:24,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:24,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278854613] [2023-12-24 16:39:24,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278854613] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:24,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:39:24,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2023-12-24 16:39:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990227159] [2023-12-24 16:39:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:24,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:39:24,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:39:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:39:24,429 INFO L87 Difference]: Start difference. First operand 511 states and 713 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:24,630 INFO L93 Difference]: Finished difference Result 1413 states and 1961 transitions. [2023-12-24 16:39:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:39:24,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-24 16:39:24,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:24,634 INFO L225 Difference]: With dead ends: 1413 [2023-12-24 16:39:24,634 INFO L226 Difference]: Without dead ends: 921 [2023-12-24 16:39:24,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:39:24,636 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 123 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:24,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 724 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:39:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-12-24 16:39:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 895. [2023-12-24 16:39:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 706 states have (on average 1.2875354107648724) internal successors, (909), 720 states have internal predecessors, (909), 162 states have call successors, (162), 26 states have call predecessors, (162), 26 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 16:39:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1233 transitions. [2023-12-24 16:39:24,675 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1233 transitions. Word has length 113 [2023-12-24 16:39:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:24,675 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1233 transitions. [2023-12-24 16:39:24,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1233 transitions. [2023-12-24 16:39:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:24,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:24,677 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:24,685 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 16:39:24,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:24,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:24,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 357925023, now seen corresponding path program 1 times [2023-12-24 16:39:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:24,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821505781] [2023-12-24 16:39:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:24,884 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 16:39:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:24,885 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:24,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 16:39:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:25,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:39:25,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:25,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-12-24 16:39:25,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 32 [2023-12-24 16:39:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-24 16:39:25,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:25,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821505781] [2023-12-24 16:39:25,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821505781] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:25,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:39:25,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-12-24 16:39:25,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84514693] [2023-12-24 16:39:25,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:25,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:25,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:25,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:39:25,600 INFO L87 Difference]: Start difference. First operand 895 states and 1233 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:25,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:25,908 INFO L93 Difference]: Finished difference Result 1839 states and 2527 transitions. [2023-12-24 16:39:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:39:25,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-24 16:39:25,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:25,913 INFO L225 Difference]: With dead ends: 1839 [2023-12-24 16:39:25,913 INFO L226 Difference]: Without dead ends: 963 [2023-12-24 16:39:25,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:39:25,916 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 78 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:25,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 410 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:39:25,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-12-24 16:39:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 907. [2023-12-24 16:39:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 714 states have (on average 1.2787114845938374) internal successors, (913), 728 states have internal predecessors, (913), 162 states have call successors, (162), 30 states have call predecessors, (162), 30 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 16:39:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1237 transitions. [2023-12-24 16:39:25,984 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1237 transitions. Word has length 113 [2023-12-24 16:39:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:25,984 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1237 transitions. [2023-12-24 16:39:25,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1237 transitions. [2023-12-24 16:39:25,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:25,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:25,986 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:25,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:26,193 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:26,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1979295120, now seen corresponding path program 1 times [2023-12-24 16:39:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:26,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619905943] [2023-12-24 16:39:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:26,194 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 16:39:26,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:26,195 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 16:39:26,212 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 16:39:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:26,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:39:26,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:26,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:39:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:39:26,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:26,872 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:39:26,872 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 16:39:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:39:26,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619905943] [2023-12-24 16:39:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619905943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:39:26,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:39:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-24 16:39:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830024775] [2023-12-24 16:39:26,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:39:26,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:39:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:39:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:39:26,963 INFO L87 Difference]: Start difference. First operand 907 states and 1237 transitions. Second operand has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:39:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:27,408 INFO L93 Difference]: Finished difference Result 2075 states and 2764 transitions. [2023-12-24 16:39:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:39:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 113 [2023-12-24 16:39:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:27,412 INFO L225 Difference]: With dead ends: 2075 [2023-12-24 16:39:27,412 INFO L226 Difference]: Without dead ends: 1187 [2023-12-24 16:39:27,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:39:27,414 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 410 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:27,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 504 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:39:27,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2023-12-24 16:39:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 971. [2023-12-24 16:39:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 762 states have (on average 1.2506561679790027) internal successors, (953), 776 states have internal predecessors, (953), 162 states have call successors, (162), 46 states have call predecessors, (162), 46 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 16:39:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1277 transitions. [2023-12-24 16:39:27,467 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1277 transitions. Word has length 113 [2023-12-24 16:39:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:27,467 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1277 transitions. [2023-12-24 16:39:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:39:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1277 transitions. [2023-12-24 16:39:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:27,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:27,469 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:27,478 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 16:39:27,676 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 16:39:27,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:27,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1721129682, now seen corresponding path program 1 times [2023-12-24 16:39:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:27,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806771511] [2023-12-24 16:39:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:27,677 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 16:39:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:27,678 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 16:39:27,714 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 16:39:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:27,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:39:27,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:27,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:39:27,960 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 95 treesize of output 35 [2023-12-24 16:39:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:31,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:31,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806771511] [2023-12-24 16:39:31,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806771511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:31,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:31,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:31,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785091772] [2023-12-24 16:39:31,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:31,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:31,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:31,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:31,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:31,498 INFO L87 Difference]: Start difference. First operand 971 states and 1277 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:35,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:40,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:42,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:46,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:46,903 INFO L93 Difference]: Finished difference Result 2101 states and 2759 transitions. [2023-12-24 16:39:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:39:46,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-24 16:39:46,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:46,907 INFO L225 Difference]: With dead ends: 2101 [2023-12-24 16:39:46,907 INFO L226 Difference]: Without dead ends: 1149 [2023-12-24 16:39:46,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:39:46,909 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 48 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:46,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 443 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2023-12-24 16:39:46,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2023-12-24 16:39:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1003. [2023-12-24 16:39:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 794 states have (on average 1.248110831234257) internal successors, (991), 808 states have internal predecessors, (991), 162 states have call successors, (162), 46 states have call predecessors, (162), 46 states have return successors, (162), 148 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 16:39:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1315 transitions. [2023-12-24 16:39:46,960 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1315 transitions. Word has length 113 [2023-12-24 16:39:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:46,962 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1315 transitions. [2023-12-24 16:39:46,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1315 transitions. [2023-12-24 16:39:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:46,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:46,965 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:46,972 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 16:39:47,171 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 16:39:47,172 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:47,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1422598745, now seen corresponding path program 1 times [2023-12-24 16:39:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433879147] [2023-12-24 16:39:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:47,173 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 16:39:47,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:47,174 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 16:39:47,175 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 16:39:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:47,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:39:47,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:47,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:39:47,684 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 17 [2023-12-24 16:39:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:47,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:47,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:47,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433879147] [2023-12-24 16:39:47,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433879147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:47,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:47,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709810589] [2023-12-24 16:39:47,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:47,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:39:47,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:47,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:39:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:39:47,730 INFO L87 Difference]: Start difference. First operand 1003 states and 1315 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:48,284 INFO L93 Difference]: Finished difference Result 2005 states and 2625 transitions. [2023-12-24 16:39:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:39:48,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-24 16:39:48,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:48,288 INFO L225 Difference]: With dead ends: 2005 [2023-12-24 16:39:48,288 INFO L226 Difference]: Without dead ends: 1012 [2023-12-24 16:39:48,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:39:48,289 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 137 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:48,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 558 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:39:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-12-24 16:39:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 977. [2023-12-24 16:39:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 770 states have (on average 1.2441558441558442) internal successors, (958), 782 states have internal predecessors, (958), 160 states have call successors, (160), 46 states have call predecessors, (160), 46 states have return successors, (160), 148 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-24 16:39:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1278 transitions. [2023-12-24 16:39:48,337 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1278 transitions. Word has length 113 [2023-12-24 16:39:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:48,338 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1278 transitions. [2023-12-24 16:39:48,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1278 transitions. [2023-12-24 16:39:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:48,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:48,339 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:48,346 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 16:39:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:48,546 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1097361189, now seen corresponding path program 1 times [2023-12-24 16:39:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357166334] [2023-12-24 16:39:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:48,547 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 16:39:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:48,548 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:48,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 16:39:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:48,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:39:48,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:48,787 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 12 treesize of output 8 [2023-12-24 16:39:48,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:39:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:48,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:48,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357166334] [2023-12-24 16:39:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357166334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:48,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:39:48,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704087047] [2023-12-24 16:39:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:48,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:39:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:39:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:39:48,854 INFO L87 Difference]: Start difference. First operand 977 states and 1278 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:49,059 INFO L93 Difference]: Finished difference Result 2190 states and 2882 transitions. [2023-12-24 16:39:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:39:49,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-24 16:39:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:49,063 INFO L225 Difference]: With dead ends: 2190 [2023-12-24 16:39:49,063 INFO L226 Difference]: Without dead ends: 1214 [2023-12-24 16:39:49,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:39:49,065 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 142 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 969 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 16:39:49,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 969 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:39:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-12-24 16:39:49,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1106. [2023-12-24 16:39:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 853 states have (on average 1.223915592028136) internal successors, (1044), 867 states have internal predecessors, (1044), 196 states have call successors, (196), 56 states have call predecessors, (196), 56 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-24 16:39:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1436 transitions. [2023-12-24 16:39:49,123 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1436 transitions. Word has length 113 [2023-12-24 16:39:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:49,124 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1436 transitions. [2023-12-24 16:39:49,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1436 transitions. [2023-12-24 16:39:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:49,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:49,125 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:49,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:49,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:49,332 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:49,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:49,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1102594969, now seen corresponding path program 1 times [2023-12-24 16:39:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:49,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414290076] [2023-12-24 16:39:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:49,333 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 16:39:49,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:49,334 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 16:39:49,335 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 16:39:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:49,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:39:49,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:50,513 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 51 treesize of output 39 [2023-12-24 16:39:50,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 33 [2023-12-24 16:39:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 16:39:50,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:39:50,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414290076] [2023-12-24 16:39:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414290076] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:50,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:39:50,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:39:50,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544380457] [2023-12-24 16:39:50,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:50,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:39:50,790 INFO L87 Difference]: Start difference. First operand 1106 states and 1436 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:51,174 INFO L93 Difference]: Finished difference Result 2168 states and 2816 transitions. [2023-12-24 16:39:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:39:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-24 16:39:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:51,178 INFO L225 Difference]: With dead ends: 2168 [2023-12-24 16:39:51,178 INFO L226 Difference]: Without dead ends: 1133 [2023-12-24 16:39:51,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:39:51,180 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 67 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:51,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 504 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:39:51,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-12-24 16:39:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1111. [2023-12-24 16:39:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 856 states have (on average 1.219626168224299) internal successors, (1044), 870 states have internal predecessors, (1044), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-24 16:39:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1436 transitions. [2023-12-24 16:39:51,239 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1436 transitions. Word has length 113 [2023-12-24 16:39:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:51,239 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1436 transitions. [2023-12-24 16:39:51,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:39:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1436 transitions. [2023-12-24 16:39:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:39:51,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:51,240 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:51,248 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 (17)] Ended with exit code 0 [2023-12-24 16:39:51,446 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 16:39:51,447 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:51,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash -31892852, now seen corresponding path program 1 times [2023-12-24 16:39:51,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174122012] [2023-12-24 16:39:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:51,447 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 16:39:51,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:51,448 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 16:39:51,449 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 16:39:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:51,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:39:51,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:53,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:39:53,236 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 144 treesize of output 54 [2023-12-24 16:39:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-24 16:39:53,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:54,103 INFO L349 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2023-12-24 16:39:54,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 93 [2023-12-24 16:39:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:39:59,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:59,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174122012] [2023-12-24 16:39:59,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174122012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:39:59,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:39:59,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-24 16:39:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205653375] [2023-12-24 16:39:59,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:39:59,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 16:39:59,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 16:39:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=276, Unknown=1, NotChecked=0, Total=342 [2023-12-24 16:39:59,787 INFO L87 Difference]: Start difference. First operand 1111 states and 1436 transitions. Second operand has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 states have internal predecessors, (81), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:02,935 INFO L93 Difference]: Finished difference Result 2786 states and 3514 transitions. [2023-12-24 16:40:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 16:40:02,936 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 states have internal predecessors, (81), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 113 [2023-12-24 16:40:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:02,941 INFO L225 Difference]: With dead ends: 2786 [2023-12-24 16:40:02,941 INFO L226 Difference]: Without dead ends: 1746 [2023-12-24 16:40:02,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=299, Invalid=960, Unknown=1, NotChecked=0, Total=1260 [2023-12-24 16:40:02,943 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 313 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:02,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1403 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 16:40:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2023-12-24 16:40:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1034. [2023-12-24 16:40:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 779 states have (on average 1.1874197689345314) internal successors, (925), 793 states have internal predecessors, (925), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-24 16:40:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1317 transitions. [2023-12-24 16:40:03,014 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1317 transitions. Word has length 113 [2023-12-24 16:40:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:03,014 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1317 transitions. [2023-12-24 16:40:03,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 states have internal predecessors, (81), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1317 transitions. [2023-12-24 16:40:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:40:03,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:03,015 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:03,025 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 16:40:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:03,226 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:03,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash 62479653, now seen corresponding path program 1 times [2023-12-24 16:40:03,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:03,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927020039] [2023-12-24 16:40:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:03,227 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 16:40:03,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:03,228 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:03,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 16:40:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:03,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:40:03,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:03,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:40:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:40:03,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:03,931 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:03,932 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 16:40:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:04,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:04,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927020039] [2023-12-24 16:40:04,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927020039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:04,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-24 16:40:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925625656] [2023-12-24 16:40:04,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:40:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:40:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:40:04,028 INFO L87 Difference]: Start difference. First operand 1034 states and 1317 transitions. Second operand has 12 states, 10 states have (on average 6.3) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:04,540 INFO L93 Difference]: Finished difference Result 2069 states and 2618 transitions. [2023-12-24 16:40:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:40:04,541 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.3) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 115 [2023-12-24 16:40:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:04,544 INFO L225 Difference]: With dead ends: 2069 [2023-12-24 16:40:04,544 INFO L226 Difference]: Without dead ends: 1106 [2023-12-24 16:40:04,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:40:04,545 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 307 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:04,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 428 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:40:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-12-24 16:40:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1034. [2023-12-24 16:40:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 779 states have (on average 1.1835686777920411) internal successors, (922), 793 states have internal predecessors, (922), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 182 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-24 16:40:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1314 transitions. [2023-12-24 16:40:04,611 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1314 transitions. Word has length 115 [2023-12-24 16:40:04,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:04,612 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1314 transitions. [2023-12-24 16:40:04,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.3) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1314 transitions. [2023-12-24 16:40:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:40:04,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:04,613 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:04,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:04,821 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:04,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash -755168797, now seen corresponding path program 1 times [2023-12-24 16:40:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917419259] [2023-12-24 16:40:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:04,821 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 16:40:04,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:04,822 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 16:40:04,825 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 16:40:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:05,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:40:05,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:05,366 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 16:40:05,431 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 16:40:05,435 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 34 [2023-12-24 16:40:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:40:05,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:05,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917419259] [2023-12-24 16:40:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917419259] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:40:05,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:40:05,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2023-12-24 16:40:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587759448] [2023-12-24 16:40:05,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:05,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:40:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:40:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:40:05,668 INFO L87 Difference]: Start difference. First operand 1034 states and 1314 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:06,046 INFO L93 Difference]: Finished difference Result 2826 states and 3551 transitions. [2023-12-24 16:40:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:40:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 115 [2023-12-24 16:40:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:06,052 INFO L225 Difference]: With dead ends: 2826 [2023-12-24 16:40:06,052 INFO L226 Difference]: Without dead ends: 1858 [2023-12-24 16:40:06,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:40:06,053 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 134 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:06,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 959 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:40:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2023-12-24 16:40:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1621. [2023-12-24 16:40:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1270 states have (on average 1.199212598425197) internal successors, (1523), 1300 states have internal predecessors, (1523), 260 states have call successors, (260), 90 states have call predecessors, (260), 90 states have return successors, (260), 230 states have call predecessors, (260), 260 states have call successors, (260) [2023-12-24 16:40:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2043 transitions. [2023-12-24 16:40:06,164 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2043 transitions. Word has length 115 [2023-12-24 16:40:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:06,164 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 2043 transitions. [2023-12-24 16:40:06,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2043 transitions. [2023-12-24 16:40:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:40:06,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:06,166 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:06,173 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 16:40:06,373 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 16:40:06,373 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:06,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1270387963, now seen corresponding path program 1 times [2023-12-24 16:40:06,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:06,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461476288] [2023-12-24 16:40:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:06,374 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 16:40:06,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:06,375 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 16:40:06,383 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 16:40:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:06,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:40:06,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:06,924 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 12 treesize of output 8 [2023-12-24 16:40:06,983 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 37 [2023-12-24 16:40:06,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2023-12-24 16:40:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:40:07,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:07,351 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:07,351 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 16:40:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:07,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461476288] [2023-12-24 16:40:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461476288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:07,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-24 16:40:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528832689] [2023-12-24 16:40:07,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:07,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 16:40:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 16:40:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:40:07,440 INFO L87 Difference]: Start difference. First operand 1621 states and 2043 transitions. Second operand has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:08,772 INFO L93 Difference]: Finished difference Result 4367 states and 5375 transitions. [2023-12-24 16:40:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 16:40:08,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 115 [2023-12-24 16:40:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:08,779 INFO L225 Difference]: With dead ends: 4367 [2023-12-24 16:40:08,779 INFO L226 Difference]: Without dead ends: 2812 [2023-12-24 16:40:08,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=1126, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:40:08,782 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 390 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:08,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1529 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:40:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2023-12-24 16:40:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1092. [2023-12-24 16:40:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 867 states have (on average 1.1995386389850058) internal successors, (1040), 881 states have internal predecessors, (1040), 164 states have call successors, (164), 60 states have call predecessors, (164), 60 states have return successors, (164), 150 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 16:40:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1368 transitions. [2023-12-24 16:40:08,884 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1368 transitions. Word has length 115 [2023-12-24 16:40:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:08,884 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1368 transitions. [2023-12-24 16:40:08,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1368 transitions. [2023-12-24 16:40:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:40:08,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:08,886 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:08,896 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 16:40:09,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:09,094 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:09,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:09,095 INFO L85 PathProgramCache]: Analyzing trace with hash -821497877, now seen corresponding path program 1 times [2023-12-24 16:40:09,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:09,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12377421] [2023-12-24 16:40:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:09,095 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 16:40:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:09,096 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:09,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:40:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:09,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:40:09,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:09,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:09,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:09,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12377421] [2023-12-24 16:40:09,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12377421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:09,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:40:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841934707] [2023-12-24 16:40:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:09,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:40:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:40:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:40:09,356 INFO L87 Difference]: Start difference. First operand 1092 states and 1368 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:09,480 INFO L93 Difference]: Finished difference Result 1126 states and 1409 transitions. [2023-12-24 16:40:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:40:09,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 115 [2023-12-24 16:40:09,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:09,483 INFO L225 Difference]: With dead ends: 1126 [2023-12-24 16:40:09,483 INFO L226 Difference]: Without dead ends: 1124 [2023-12-24 16:40:09,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:40:09,484 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 7 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:09,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 446 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:40:09,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2023-12-24 16:40:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1116. [2023-12-24 16:40:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 891 states have (on average 1.1941638608305274) internal successors, (1064), 905 states have internal predecessors, (1064), 164 states have call successors, (164), 60 states have call predecessors, (164), 60 states have return successors, (164), 150 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 16:40:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1392 transitions. [2023-12-24 16:40:09,565 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1392 transitions. Word has length 115 [2023-12-24 16:40:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:09,565 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1392 transitions. [2023-12-24 16:40:09,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1392 transitions. [2023-12-24 16:40:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:40:09,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:09,567 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:09,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:09,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:09,776 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:09,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1272764881, now seen corresponding path program 1 times [2023-12-24 16:40:09,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:09,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888342634] [2023-12-24 16:40:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:09,777 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 16:40:09,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:09,778 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 16:40:09,792 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 16:40:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:10,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:40:10,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:10,379 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 16:40:10,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:40:10,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-24 16:40:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:40:10,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:10,920 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:10,920 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 16:40:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:11,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888342634] [2023-12-24 16:40:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888342634] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:11,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-24 16:40:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338400477] [2023-12-24 16:40:11,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 16:40:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 16:40:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:40:11,067 INFO L87 Difference]: Start difference. First operand 1116 states and 1392 transitions. Second operand has 19 states, 17 states have (on average 4.411764705882353) internal successors, (75), 19 states have internal predecessors, (75), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:12,834 INFO L93 Difference]: Finished difference Result 2963 states and 3658 transitions. [2023-12-24 16:40:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 16:40:12,834 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.411764705882353) internal successors, (75), 19 states have internal predecessors, (75), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 116 [2023-12-24 16:40:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:12,839 INFO L225 Difference]: With dead ends: 2963 [2023-12-24 16:40:12,839 INFO L226 Difference]: Without dead ends: 1922 [2023-12-24 16:40:12,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1538, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 16:40:12,840 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 635 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:12,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1599 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:40:12,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2023-12-24 16:40:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1539. [2023-12-24 16:40:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1206 states have (on average 1.1807628524046434) internal successors, (1424), 1226 states have internal predecessors, (1424), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1904 transitions. [2023-12-24 16:40:12,981 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1904 transitions. Word has length 116 [2023-12-24 16:40:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:12,982 INFO L495 AbstractCegarLoop]: Abstraction has 1539 states and 1904 transitions. [2023-12-24 16:40:12,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.411764705882353) internal successors, (75), 19 states have internal predecessors, (75), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1904 transitions. [2023-12-24 16:40:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:40:12,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:12,983 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:12,990 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 16:40:13,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:13,191 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:13,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:13,191 INFO L85 PathProgramCache]: Analyzing trace with hash -823937569, now seen corresponding path program 1 times [2023-12-24 16:40:13,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:13,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124992417] [2023-12-24 16:40:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:13,191 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 16:40:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:13,192 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:13,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 16:40:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:13,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:40:13,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:13,697 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 16:40:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:40:13,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:13,895 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:13,895 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 16:40:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:13,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124992417] [2023-12-24 16:40:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124992417] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:13,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:40:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518056386] [2023-12-24 16:40:13,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:13,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:40:13,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:40:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:40:13,961 INFO L87 Difference]: Start difference. First operand 1539 states and 1904 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 11 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:14,546 INFO L93 Difference]: Finished difference Result 3189 states and 3919 transitions. [2023-12-24 16:40:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:40:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 11 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 117 [2023-12-24 16:40:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:14,550 INFO L225 Difference]: With dead ends: 3189 [2023-12-24 16:40:14,550 INFO L226 Difference]: Without dead ends: 1651 [2023-12-24 16:40:14,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 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 16:40:14,552 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 372 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:14,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 422 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:40:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-12-24 16:40:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1539. [2023-12-24 16:40:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1206 states have (on average 1.1782752902155886) internal successors, (1421), 1226 states have internal predecessors, (1421), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1901 transitions. [2023-12-24 16:40:14,715 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1901 transitions. Word has length 117 [2023-12-24 16:40:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:14,715 INFO L495 AbstractCegarLoop]: Abstraction has 1539 states and 1901 transitions. [2023-12-24 16:40:14,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 11 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1901 transitions. [2023-12-24 16:40:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:40:14,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:14,716 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:14,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:14,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:14,924 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:14,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash -401235743, now seen corresponding path program 1 times [2023-12-24 16:40:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241120808] [2023-12-24 16:40:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:14,925 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 16:40:14,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:14,926 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 16:40:14,927 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 16:40:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:15,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:40:15,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:15,540 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 12 treesize of output 8 [2023-12-24 16:40:15,599 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 37 [2023-12-24 16:40:15,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2023-12-24 16:40:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:40:15,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:15,762 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 22 [2023-12-24 16:40:15,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:40:15,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:40:15,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:40:15,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2023-12-24 16:40:15,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-12-24 16:40:16,105 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:16,106 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 31 treesize of output 26 [2023-12-24 16:40:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:16,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:16,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241120808] [2023-12-24 16:40:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241120808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:16,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-24 16:40:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942942414] [2023-12-24 16:40:16,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:16,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 16:40:16,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 16:40:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:40:16,208 INFO L87 Difference]: Start difference. First operand 1539 states and 1901 transitions. Second operand has 22 states, 20 states have (on average 4.5) internal successors, (90), 22 states have internal predecessors, (90), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:40:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:17,684 INFO L93 Difference]: Finished difference Result 3976 states and 4824 transitions. [2023-12-24 16:40:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 16:40:17,685 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.5) internal successors, (90), 22 states have internal predecessors, (90), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) Word has length 117 [2023-12-24 16:40:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:17,690 INFO L225 Difference]: With dead ends: 3976 [2023-12-24 16:40:17,690 INFO L226 Difference]: Without dead ends: 2433 [2023-12-24 16:40:17,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=1395, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 16:40:17,693 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 283 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:17,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1719 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:40:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2023-12-24 16:40:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 1549. [2023-12-24 16:40:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1216 states have (on average 1.1702302631578947) internal successors, (1423), 1236 states have internal predecessors, (1423), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 1903 transitions. [2023-12-24 16:40:17,845 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 1903 transitions. Word has length 117 [2023-12-24 16:40:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:17,845 INFO L495 AbstractCegarLoop]: Abstraction has 1549 states and 1903 transitions. [2023-12-24 16:40:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.5) internal successors, (90), 22 states have internal predecessors, (90), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:40:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 1903 transitions. [2023-12-24 16:40:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:40:17,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:17,847 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:17,857 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 16:40:18,056 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 16:40:18,057 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:18,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1134107366, now seen corresponding path program 1 times [2023-12-24 16:40:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:18,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069402525] [2023-12-24 16:40:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:18,058 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 16:40:18,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:18,059 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 16:40:18,060 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 16:40:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:18,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:40:18,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:18,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:40:19,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:40:19,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:40:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:40:20,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:23,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:23,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069402525] [2023-12-24 16:40:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069402525] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:40:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:40:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-12-24 16:40:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277348915] [2023-12-24 16:40:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:23,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:40:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:23,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:40:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:40:23,568 INFO L87 Difference]: Start difference. First operand 1549 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:26,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:26,366 INFO L93 Difference]: Finished difference Result 3681 states and 4535 transitions. [2023-12-24 16:40:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:40:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-12-24 16:40:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:26,382 INFO L225 Difference]: With dead ends: 3681 [2023-12-24 16:40:26,382 INFO L226 Difference]: Without dead ends: 2133 [2023-12-24 16:40:26,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:40:26,384 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 42 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:26,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 385 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 16:40:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2023-12-24 16:40:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2055. [2023-12-24 16:40:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1722 states have (on average 1.1939605110336817) internal successors, (2056), 1742 states have internal predecessors, (2056), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2536 transitions. [2023-12-24 16:40:26,540 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2536 transitions. Word has length 117 [2023-12-24 16:40:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:26,540 INFO L495 AbstractCegarLoop]: Abstraction has 2055 states and 2536 transitions. [2023-12-24 16:40:26,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2536 transitions. [2023-12-24 16:40:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:40:26,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:26,542 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:26,552 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 16:40:26,752 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 16:40:26,752 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash 154689771, now seen corresponding path program 1 times [2023-12-24 16:40:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:26,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828406924] [2023-12-24 16:40:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:26,753 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 16:40:26,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:26,754 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 16:40:26,755 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 16:40:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:26,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:40:26,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:27,317 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 16:40:27,385 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 22 treesize of output 14 [2023-12-24 16:40:27,410 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 16:40:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:40:27,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:28,130 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:28,130 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 16:40:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:28,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:28,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828406924] [2023-12-24 16:40:28,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828406924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:28,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:28,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-24 16:40:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133765316] [2023-12-24 16:40:28,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 16:40:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 16:40:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:40:28,269 INFO L87 Difference]: Start difference. First operand 2055 states and 2536 transitions. Second operand has 24 states, 22 states have (on average 4.181818181818182) internal successors, (92), 24 states have internal predecessors, (92), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:40:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:30,242 INFO L93 Difference]: Finished difference Result 4715 states and 5741 transitions. [2023-12-24 16:40:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 16:40:30,242 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.181818181818182) internal successors, (92), 24 states have internal predecessors, (92), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) Word has length 118 [2023-12-24 16:40:30,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:30,247 INFO L225 Difference]: With dead ends: 4715 [2023-12-24 16:40:30,247 INFO L226 Difference]: Without dead ends: 2651 [2023-12-24 16:40:30,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 16:40:30,249 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 518 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:30,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1804 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:40:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2023-12-24 16:40:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2069. [2023-12-24 16:40:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 1736 states have (on average 1.1912442396313363) internal successors, (2068), 1756 states have internal predecessors, (2068), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2548 transitions. [2023-12-24 16:40:30,396 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2548 transitions. Word has length 118 [2023-12-24 16:40:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:30,397 INFO L495 AbstractCegarLoop]: Abstraction has 2069 states and 2548 transitions. [2023-12-24 16:40:30,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.181818181818182) internal successors, (92), 24 states have internal predecessors, (92), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:40:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2548 transitions. [2023-12-24 16:40:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:40:30,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:30,398 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:30,405 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 (27)] Ended with exit code 0 [2023-12-24 16:40:30,599 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 16:40:30,599 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:30,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash 741495785, now seen corresponding path program 1 times [2023-12-24 16:40:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:30,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022773211] [2023-12-24 16:40:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:30,600 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 16:40:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:30,601 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 16:40:30,602 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 16:40:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:30,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:40:30,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:31,196 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 33 treesize of output 21 [2023-12-24 16:40:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 204 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:40:31,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:31,406 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:31,406 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 16:40:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:31,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:31,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022773211] [2023-12-24 16:40:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022773211] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:31,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:40:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887910684] [2023-12-24 16:40:31,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:31,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:40:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:40:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:40:31,488 INFO L87 Difference]: Start difference. First operand 2069 states and 2548 transitions. Second operand has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:32,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:32,061 INFO L93 Difference]: Finished difference Result 4133 states and 5061 transitions. [2023-12-24 16:40:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:40:32,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 118 [2023-12-24 16:40:32,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:32,065 INFO L225 Difference]: With dead ends: 4133 [2023-12-24 16:40:32,065 INFO L226 Difference]: Without dead ends: 2053 [2023-12-24 16:40:32,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:40:32,067 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 269 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:32,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 417 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:40:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-12-24 16:40:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1937. [2023-12-24 16:40:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1604 states have (on average 1.167082294264339) internal successors, (1872), 1624 states have internal predecessors, (1872), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2352 transitions. [2023-12-24 16:40:32,233 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2352 transitions. Word has length 118 [2023-12-24 16:40:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:32,233 INFO L495 AbstractCegarLoop]: Abstraction has 1937 states and 2352 transitions. [2023-12-24 16:40:32,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2352 transitions. [2023-12-24 16:40:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:40:32,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:32,234 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:32,246 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 16:40:32,442 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 16:40:32,442 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:32,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1109225201, now seen corresponding path program 1 times [2023-12-24 16:40:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001050904] [2023-12-24 16:40:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:32,443 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 16:40:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:32,444 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 16:40:32,446 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 16:40:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:32,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:40:32,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:32,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:40:33,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:40:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:33,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:33,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001050904] [2023-12-24 16:40:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001050904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:33,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:40:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874685114] [2023-12-24 16:40:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:33,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:40:33,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:40:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:40:33,068 INFO L87 Difference]: Start difference. First operand 1937 states and 2352 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:33,907 INFO L93 Difference]: Finished difference Result 4022 states and 4878 transitions. [2023-12-24 16:40:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:40:33,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-24 16:40:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:33,911 INFO L225 Difference]: With dead ends: 4022 [2023-12-24 16:40:33,911 INFO L226 Difference]: Without dead ends: 2086 [2023-12-24 16:40:33,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:40:33,913 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 174 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:33,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 919 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:40:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2023-12-24 16:40:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1947. [2023-12-24 16:40:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1614 states have (on average 1.1685254027261462) internal successors, (1886), 1634 states have internal predecessors, (1886), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2366 transitions. [2023-12-24 16:40:34,059 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2366 transitions. Word has length 118 [2023-12-24 16:40:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:34,059 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 2366 transitions. [2023-12-24 16:40:34,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2366 transitions. [2023-12-24 16:40:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:40:34,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:34,061 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:34,070 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 16:40:34,265 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 16:40:34,265 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:34,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash 522419187, now seen corresponding path program 1 times [2023-12-24 16:40:34,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:34,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195337439] [2023-12-24 16:40:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:34,266 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 16:40:34,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:34,267 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 16:40:34,268 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 16:40:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:34,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:40:34,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:34,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:40:34,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:40:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:34,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:34,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:34,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195337439] [2023-12-24 16:40:34,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195337439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:34,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:34,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:40:34,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802655824] [2023-12-24 16:40:34,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:34,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:40:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:34,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:40:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:40:34,890 INFO L87 Difference]: Start difference. First operand 1947 states and 2366 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:35,779 INFO L93 Difference]: Finished difference Result 4010 states and 4860 transitions. [2023-12-24 16:40:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:40:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-24 16:40:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:35,783 INFO L225 Difference]: With dead ends: 4010 [2023-12-24 16:40:35,783 INFO L226 Difference]: Without dead ends: 2064 [2023-12-24 16:40:35,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:40:35,786 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 169 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:35,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 788 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:40:35,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2023-12-24 16:40:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1947. [2023-12-24 16:40:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1614 states have (on average 1.1672862453531598) internal successors, (1884), 1634 states have internal predecessors, (1884), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2364 transitions. [2023-12-24 16:40:35,959 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2364 transitions. Word has length 118 [2023-12-24 16:40:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:35,959 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 2364 transitions. [2023-12-24 16:40:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2364 transitions. [2023-12-24 16:40:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:40:35,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:35,960 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:35,967 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 16:40:36,160 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 16:40:36,161 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1363109901, now seen corresponding path program 1 times [2023-12-24 16:40:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:36,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463616531] [2023-12-24 16:40:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:36,162 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 16:40:36,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:36,162 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 16:40:36,163 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 16:40:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:36,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:40:36,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:36,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:40:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:36,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:36,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:36,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463616531] [2023-12-24 16:40:36,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463616531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:36,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:40:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630508189] [2023-12-24 16:40:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:36,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:40:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:40:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:40:36,720 INFO L87 Difference]: Start difference. First operand 1947 states and 2364 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:37,187 INFO L93 Difference]: Finished difference Result 3785 states and 4582 transitions. [2023-12-24 16:40:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:40:37,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-24 16:40:37,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:37,191 INFO L225 Difference]: With dead ends: 3785 [2023-12-24 16:40:37,191 INFO L226 Difference]: Without dead ends: 1839 [2023-12-24 16:40:37,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:40:37,194 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 76 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:37,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 435 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:40:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2023-12-24 16:40:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1825. [2023-12-24 16:40:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1492 states have (on average 1.155495978552279) internal successors, (1724), 1512 states have internal predecessors, (1724), 240 states have call successors, (240), 92 states have call predecessors, (240), 92 states have return successors, (240), 220 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 16:40:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2204 transitions. [2023-12-24 16:40:37,341 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2204 transitions. Word has length 118 [2023-12-24 16:40:37,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:37,341 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2204 transitions. [2023-12-24 16:40:37,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2204 transitions. [2023-12-24 16:40:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:40:37,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:37,342 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:37,353 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 16:40:37,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:37,552 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:37,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1887053415, now seen corresponding path program 1 times [2023-12-24 16:40:37,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476717684] [2023-12-24 16:40:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:37,554 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 16:40:37,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:37,555 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:37,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 16:40:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:37,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:40:37,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:37,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:40:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:37,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:37,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:37,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476717684] [2023-12-24 16:40:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476717684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:40:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317111375] [2023-12-24 16:40:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:37,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:40:37,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:37,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:40:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:40:37,955 INFO L87 Difference]: Start difference. First operand 1825 states and 2204 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:38,298 INFO L93 Difference]: Finished difference Result 5014 states and 6057 transitions. [2023-12-24 16:40:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:40:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-24 16:40:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:38,303 INFO L225 Difference]: With dead ends: 5014 [2023-12-24 16:40:38,303 INFO L226 Difference]: Without dead ends: 3190 [2023-12-24 16:40:38,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 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 16:40:38,306 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 163 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:38,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 325 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:40:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2023-12-24 16:40:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 2843. [2023-12-24 16:40:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2298 states have (on average 1.1475195822454307) internal successors, (2637), 2330 states have internal predecessors, (2637), 396 states have call successors, (396), 148 states have call predecessors, (396), 148 states have return successors, (396), 364 states have call predecessors, (396), 396 states have call successors, (396) [2023-12-24 16:40:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 3429 transitions. [2023-12-24 16:40:38,539 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 3429 transitions. Word has length 118 [2023-12-24 16:40:38,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:38,539 INFO L495 AbstractCegarLoop]: Abstraction has 2843 states and 3429 transitions. [2023-12-24 16:40:38,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 3429 transitions. [2023-12-24 16:40:38,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:40:38,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:38,540 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:38,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:38,747 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:38,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1118990633, now seen corresponding path program 1 times [2023-12-24 16:40:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631283949] [2023-12-24 16:40:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:38,756 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 16:40:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:38,757 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 16:40:38,758 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 16:40:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:39,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:40:39,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:39,026 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 16:40:39,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:40:39,240 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 16:40:39,243 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 51 treesize of output 35 [2023-12-24 16:40:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:39,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:39,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:39,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631283949] [2023-12-24 16:40:39,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631283949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:39,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:39,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 16:40:39,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848979561] [2023-12-24 16:40:39,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:39,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:40:39,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:39,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:40:39,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:40:39,304 INFO L87 Difference]: Start difference. First operand 2843 states and 3429 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:41,991 INFO L93 Difference]: Finished difference Result 5346 states and 6414 transitions. [2023-12-24 16:40:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 16:40:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-24 16:40:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:41,999 INFO L225 Difference]: With dead ends: 5346 [2023-12-24 16:40:41,999 INFO L226 Difference]: Without dead ends: 5344 [2023-12-24 16:40:42,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:40:42,000 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 458 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:42,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1352 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 16:40:42,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2023-12-24 16:40:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 4271. [2023-12-24 16:40:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 3384 states have (on average 1.1450945626477542) internal successors, (3875), 3442 states have internal predecessors, (3875), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2023-12-24 16:40:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 5147 transitions. [2023-12-24 16:40:42,420 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 5147 transitions. Word has length 118 [2023-12-24 16:40:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:42,420 INFO L495 AbstractCegarLoop]: Abstraction has 4271 states and 5147 transitions. [2023-12-24 16:40:42,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 5147 transitions. [2023-12-24 16:40:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 16:40:42,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:42,421 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:42,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:42,628 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 16:40:42,629 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:42,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1488917006, now seen corresponding path program 1 times [2023-12-24 16:40:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:42,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401510644] [2023-12-24 16:40:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:42,629 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 16:40:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:42,630 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 16:40:42,665 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 16:40:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:42,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:40:42,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:42,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:40:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:42,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:42,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:42,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401510644] [2023-12-24 16:40:42,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401510644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:42,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:42,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:40:42,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146070042] [2023-12-24 16:40:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:40:42,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:40:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:40:42,943 INFO L87 Difference]: Start difference. First operand 4271 states and 5147 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:43,778 INFO L93 Difference]: Finished difference Result 6577 states and 7948 transitions. [2023-12-24 16:40:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:40:43,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2023-12-24 16:40:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:43,801 INFO L225 Difference]: With dead ends: 6577 [2023-12-24 16:40:43,801 INFO L226 Difference]: Without dead ends: 4666 [2023-12-24 16:40:43,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:40:43,804 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 69 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:43,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 678 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:40:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2023-12-24 16:40:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4215. [2023-12-24 16:40:44,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 3328 states have (on average 1.140625) internal successors, (3796), 3386 states have internal predecessors, (3796), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2023-12-24 16:40:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 5068 transitions. [2023-12-24 16:40:44,226 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 5068 transitions. Word has length 119 [2023-12-24 16:40:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:44,226 INFO L495 AbstractCegarLoop]: Abstraction has 4215 states and 5068 transitions. [2023-12-24 16:40:44,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 5068 transitions. [2023-12-24 16:40:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 16:40:44,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:44,228 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:44,237 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 16:40:44,439 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 16:40:44,440 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash -99430896, now seen corresponding path program 1 times [2023-12-24 16:40:44,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:44,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053920655] [2023-12-24 16:40:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:44,441 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 16:40:44,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:44,442 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 16:40:44,450 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 16:40:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:44,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:40:44,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:44,735 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 16:40:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:44,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:44,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053920655] [2023-12-24 16:40:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053920655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:44,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:44,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:40:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33738065] [2023-12-24 16:40:44,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:44,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:40:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:40:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:40:44,756 INFO L87 Difference]: Start difference. First operand 4215 states and 5068 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:45,477 INFO L93 Difference]: Finished difference Result 6751 states and 8142 transitions. [2023-12-24 16:40:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:40:45,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2023-12-24 16:40:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:45,484 INFO L225 Difference]: With dead ends: 6751 [2023-12-24 16:40:45,484 INFO L226 Difference]: Without dead ends: 4877 [2023-12-24 16:40:45,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:40:45,487 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 92 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:45,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 731 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:40:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4877 states. [2023-12-24 16:40:45,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4877 to 4255. [2023-12-24 16:40:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 3368 states have (on average 1.1437054631828978) internal successors, (3852), 3426 states have internal predecessors, (3852), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2023-12-24 16:40:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5124 transitions. [2023-12-24 16:40:45,933 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5124 transitions. Word has length 119 [2023-12-24 16:40:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:45,933 INFO L495 AbstractCegarLoop]: Abstraction has 4255 states and 5124 transitions. [2023-12-24 16:40:45,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5124 transitions. [2023-12-24 16:40:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 16:40:45,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:45,935 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:45,942 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 16:40:46,141 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 16:40:46,141 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:46,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash -686236910, now seen corresponding path program 1 times [2023-12-24 16:40:46,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:46,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957542400] [2023-12-24 16:40:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:46,142 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 16:40:46,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:46,144 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 16:40:46,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 16:40:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:46,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:40:46,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:46,590 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 46 treesize of output 34 [2023-12-24 16:40:46,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2023-12-24 16:40:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:46,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:46,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957542400] [2023-12-24 16:40:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957542400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:46,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:46,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:40:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499357754] [2023-12-24 16:40:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:46,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:40:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:40:46,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:40:46,757 INFO L87 Difference]: Start difference. First operand 4255 states and 5124 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:48,629 INFO L93 Difference]: Finished difference Result 6699 states and 8075 transitions. [2023-12-24 16:40:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:40:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2023-12-24 16:40:48,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:48,635 INFO L225 Difference]: With dead ends: 6699 [2023-12-24 16:40:48,635 INFO L226 Difference]: Without dead ends: 4813 [2023-12-24 16:40:48,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:40:48,638 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 178 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:48,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1313 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 16:40:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2023-12-24 16:40:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 4255. [2023-12-24 16:40:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 3368 states have (on average 1.1437054631828978) internal successors, (3852), 3426 states have internal predecessors, (3852), 636 states have call successors, (636), 250 states have call predecessors, (636), 250 states have return successors, (636), 578 states have call predecessors, (636), 636 states have call successors, (636) [2023-12-24 16:40:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5124 transitions. [2023-12-24 16:40:49,025 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5124 transitions. Word has length 119 [2023-12-24 16:40:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:49,025 INFO L495 AbstractCegarLoop]: Abstraction has 4255 states and 5124 transitions. [2023-12-24 16:40:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5124 transitions. [2023-12-24 16:40:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 16:40:49,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:49,027 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:49,038 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 16:40:49,234 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 16:40:49,234 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:49,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1002706832, now seen corresponding path program 1 times [2023-12-24 16:40:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:49,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205753287] [2023-12-24 16:40:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:49,235 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 16:40:49,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:49,236 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 16:40:49,272 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 16:40:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:49,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:40:49,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:49,857 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 33 treesize of output 21 [2023-12-24 16:40:49,875 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 12 treesize of output 8 [2023-12-24 16:40:49,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:40:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:40:49,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:50,123 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 26 treesize of output 22 [2023-12-24 16:40:50,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:40:50,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:40:50,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:40:50,369 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:50,370 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 16:40:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:40:50,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205753287] [2023-12-24 16:40:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205753287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:50,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:50,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2023-12-24 16:40:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569218038] [2023-12-24 16:40:50,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:50,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 16:40:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 16:40:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:40:50,457 INFO L87 Difference]: Start difference. First operand 4255 states and 5124 transitions. Second operand has 20 states, 18 states have (on average 4.333333333333333) internal successors, (78), 20 states have internal predecessors, (78), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:52,988 INFO L93 Difference]: Finished difference Result 7725 states and 9223 transitions. [2023-12-24 16:40:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 16:40:52,989 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.333333333333333) internal successors, (78), 20 states have internal predecessors, (78), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 119 [2023-12-24 16:40:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:52,995 INFO L225 Difference]: With dead ends: 7725 [2023-12-24 16:40:52,995 INFO L226 Difference]: Without dead ends: 5837 [2023-12-24 16:40:52,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=379, Invalid=1783, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 16:40:52,998 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 471 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:52,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1904 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:40:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2023-12-24 16:40:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 4207. [2023-12-24 16:40:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4207 states, 3302 states have (on average 1.145366444579043) internal successors, (3782), 3360 states have internal predecessors, (3782), 648 states have call successors, (648), 256 states have call predecessors, (648), 256 states have return successors, (648), 590 states have call predecessors, (648), 648 states have call successors, (648) [2023-12-24 16:40:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 5078 transitions. [2023-12-24 16:40:53,410 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 5078 transitions. Word has length 119 [2023-12-24 16:40:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:53,410 INFO L495 AbstractCegarLoop]: Abstraction has 4207 states and 5078 transitions. [2023-12-24 16:40:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.333333333333333) internal successors, (78), 20 states have internal predecessors, (78), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:40:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 5078 transitions. [2023-12-24 16:40:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 16:40:53,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:53,411 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:53,420 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 16:40:53,611 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 16:40:53,612 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:53,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 29589805, now seen corresponding path program 1 times [2023-12-24 16:40:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633274724] [2023-12-24 16:40:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:53,612 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 16:40:53,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:53,613 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 16:40:53,615 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 16:40:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:53,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:40:53,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:54,244 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 12 treesize of output 8 [2023-12-24 16:40:54,307 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 17 treesize of output 9 [2023-12-24 16:40:54,334 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 16:40:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 214 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:40:54,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:54,761 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 22 [2023-12-24 16:40:54,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:40:54,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:40:54,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:40:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:40:54,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633274724] [2023-12-24 16:40:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633274724] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:40:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:40:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2023-12-24 16:40:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312004411] [2023-12-24 16:40:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:40:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:40:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:40:54,888 INFO L87 Difference]: Start difference. First operand 4207 states and 5078 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:56,112 INFO L93 Difference]: Finished difference Result 7468 states and 8974 transitions. [2023-12-24 16:40:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:40:56,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2023-12-24 16:40:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:56,119 INFO L225 Difference]: With dead ends: 7468 [2023-12-24 16:40:56,119 INFO L226 Difference]: Without dead ends: 4728 [2023-12-24 16:40:56,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:40:56,123 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 166 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:56,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1469 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:40:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2023-12-24 16:40:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 3957. [2023-12-24 16:40:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3957 states, 3052 states have (on average 1.124508519003932) internal successors, (3432), 3110 states have internal predecessors, (3432), 648 states have call successors, (648), 256 states have call predecessors, (648), 256 states have return successors, (648), 590 states have call predecessors, (648), 648 states have call successors, (648) [2023-12-24 16:40:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3957 states to 3957 states and 4728 transitions. [2023-12-24 16:40:56,530 INFO L78 Accepts]: Start accepts. Automaton has 3957 states and 4728 transitions. Word has length 120 [2023-12-24 16:40:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:56,530 INFO L495 AbstractCegarLoop]: Abstraction has 3957 states and 4728 transitions. [2023-12-24 16:40:56,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:40:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3957 states and 4728 transitions. [2023-12-24 16:40:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-24 16:40:56,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:56,545 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:40:56,554 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 (38)] Ended with exit code 0 [2023-12-24 16:40:56,746 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 16:40:56,746 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:56,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash -707411294, now seen corresponding path program 1 times [2023-12-24 16:40:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:56,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431585839] [2023-12-24 16:40:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:56,747 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 16:40:56,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:56,748 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 16:40:56,749 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 16:40:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:57,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:40:57,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:58,161 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 27 treesize of output 19 [2023-12-24 16:40:58,164 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 16:40:58,332 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 18 treesize of output 10 [2023-12-24 16:40:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 9 proven. 1052 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-12-24 16:40:58,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:59,192 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 36 treesize of output 32 [2023-12-24 16:40:59,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:40:59,577 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 27 treesize of output 30 [2023-12-24 16:40:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 24 proven. 114 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-12-24 16:40:59,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431585839] [2023-12-24 16:40:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431585839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:59,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 16:40:59,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188029609] [2023-12-24 16:40:59,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:59,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 16:40:59,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:59,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 16:40:59,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:40:59,829 INFO L87 Difference]: Start difference. First operand 3957 states and 4728 transitions. Second operand has 15 states, 13 states have (on average 14.23076923076923) internal successors, (185), 14 states have internal predecessors, (185), 6 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 6 states have call successors, (56) [2023-12-24 16:41:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:41:02,331 INFO L93 Difference]: Finished difference Result 8176 states and 9695 transitions. [2023-12-24 16:41:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 16:41:02,331 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 14.23076923076923) internal successors, (185), 14 states have internal predecessors, (185), 6 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 6 states have call successors, (56) Word has length 238 [2023-12-24 16:41:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:41:02,331 INFO L225 Difference]: With dead ends: 8176 [2023-12-24 16:41:02,331 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:41:02,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=323, Invalid=937, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 16:41:02,339 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 461 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:41:02,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1076 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:41:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:41:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:41:02,339 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 16:41:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:41:02,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2023-12-24 16:41:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:41:02,341 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:41:02,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 14.23076923076923) internal successors, (185), 14 states have internal predecessors, (185), 6 states have call successors, (56), 5 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 6 states have call successors, (56) [2023-12-24 16:41:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:41:02,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:41:02,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:41:02,354 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 (39)] Ended with exit code 0 [2023-12-24 16:41:02,547 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 16:41:02,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:41:09,839 WARN L293 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 416 DAG size of output: 377 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:47:34,096 WARN L293 SmtUtils]: Spent 6.31m on a formula simplification. DAG size of input: 510 DAG size of output: 552 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:48:26,749 WARN L293 SmtUtils]: Spent 52.20s on a formula simplification. DAG size of input: 616 DAG size of output: 582 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:48:32,907 WARN L293 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 432 DAG size of output: 351 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:48:43,426 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 192 DAG size of output: 140 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:49:14,999 WARN L293 SmtUtils]: Spent 31.57s on a formula simplification. DAG size of input: 179 DAG size of output: 113 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:49:26,734 WARN L293 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 175 DAG size of output: 128 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:49:40,053 WARN L293 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 156 DAG size of output: 150 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:50:05,928 WARN L293 SmtUtils]: Spent 23.77s on a formula simplification. DAG size of input: 194 DAG size of output: 119 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:50:22,364 WARN L293 SmtUtils]: Spent 12.19s on a formula simplification. DAG size of input: 202 DAG size of output: 142 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:50:37,197 WARN L293 SmtUtils]: Spent 14.83s on a formula simplification. DAG size of input: 147 DAG size of output: 136 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:50:52,668 WARN L293 SmtUtils]: Spent 15.47s on a formula simplification. DAG size of input: 194 DAG size of output: 147 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:51:11,028 WARN L293 SmtUtils]: Spent 18.36s on a formula simplification. DAG size of input: 168 DAG size of output: 130 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:52:10,527 WARN L293 SmtUtils]: Spent 59.50s on a formula simplification. DAG size of input: 207 DAG size of output: 183 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:53:09,598 WARN L293 SmtUtils]: Spent 59.07s on a formula simplification. DAG size of input: 207 DAG size of output: 149 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 16:53:36,606 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∧-7-5-6-4-6-2-6-6-6-6-6-2-6-10-7-10-7-3-7-3-9-2-9-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-24-7-6-7-6-8-6-8-10-7-2-6-10-7-2-9-3-7-2-9-1 context. [2023-12-24 16:53:36,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:53:36,619 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 16:53:36,620 INFO L158 Benchmark]: Toolchain (without parser) took 871922.52ms. Allocated memory was 189.8MB in the beginning and 1.1GB in the end (delta: 894.4MB). Free memory was 151.5MB in the beginning and 786.9MB in the end (delta: -635.5MB). Peak memory consumption was 259.9MB. Max. memory is 8.0GB. [2023-12-24 16:53:36,620 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:53:36,620 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:53:36,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.13ms. Allocated memory is still 189.8MB. Free memory was 151.5MB in the beginning and 136.6MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 16:53:36,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.49ms. Allocated memory is still 189.8MB. Free memory was 136.6MB in the beginning and 133.6MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 16:53:36,621 INFO L158 Benchmark]: Boogie Preprocessor took 86.80ms. Allocated memory is still 189.8MB. Free memory was 133.6MB in the beginning and 127.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 16:53:36,621 INFO L158 Benchmark]: RCFGBuilder took 703.37ms. Allocated memory was 189.8MB in the beginning and 250.6MB in the end (delta: 60.8MB). Free memory was 127.4MB in the beginning and 213.7MB in the end (delta: -86.4MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2023-12-24 16:53:36,621 INFO L158 Benchmark]: TraceAbstraction took 870868.04ms. Allocated memory was 250.6MB in the beginning and 1.1GB in the end (delta: 833.6MB). Free memory was 213.4MB in the beginning and 786.9MB in the end (delta: -573.5MB). Peak memory consumption was 260.1MB. Max. memory is 8.0GB. [2023-12-24 16:53:36,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.13ms. Allocated memory is still 189.8MB. Free memory was 151.5MB in the beginning and 136.6MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.49ms. Allocated memory is still 189.8MB. Free memory was 136.6MB in the beginning and 133.6MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 86.80ms. Allocated memory is still 189.8MB. Free memory was 133.6MB in the beginning and 127.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 703.37ms. Allocated memory was 189.8MB in the beginning and 250.6MB in the end (delta: 60.8MB). Free memory was 127.4MB in the beginning and 213.7MB in the end (delta: -86.4MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. * TraceAbstraction took 870868.04ms. Allocated memory was 250.6MB in the beginning and 1.1GB in the end (delta: 833.6MB). Free memory was 213.4MB in the beginning and 786.9MB in the end (delta: -573.5MB). Peak memory consumption was 260.1MB. 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 ∨-54-14-3-13-3-13-2-12-2-10-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-66-14-11-13-3-13-2-12-2-10-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown